author | Matthew Ahrens <mahrens@delphix.com> |
Tue, 21 Aug 2012 04:36:41 -0700 | |
changeset 13776 | cd512c80fd75 |
parent 13700 | 2889e2596bd6 |
child 13887 | 196932ec9e6a |
permissions | -rw-r--r-- |
789 | 1 |
/* |
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* CDDL HEADER START |
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* |
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* The contents of this file are subject to the terms of the |
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* Common Development and Distribution License (the "License"). |
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* You may not use this file except in compliance with the License. |
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* |
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
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* or http://www.opensolaris.org/os/licensing. |
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* See the License for the specific language governing permissions |
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* and limitations under the License. |
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* |
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* When distributing Covered Code, include this CDDL HEADER in each |
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
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* If applicable, add the following below this CDDL HEADER, with the |
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* fields enclosed by brackets "[]" replaced with your own identifying |
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* information: Portions Copyright [yyyy] [name of copyright owner] |
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* |
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* CDDL HEADER END |
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*/ |
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/* |
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12123
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6572591 meta dnode lookup causes bucket lock contention in dbuf hash
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22 |
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
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* Copyright (c) 2012 by Delphix. All rights reserved. |
789 | 24 |
*/ |
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||
26 |
#include <sys/dmu.h> |
|
27 |
#include <sys/dmu_impl.h> |
|
28 |
#include <sys/dmu_tx.h> |
|
29 |
#include <sys/dbuf.h> |
|
30 |
#include <sys/dnode.h> |
|
31 |
#include <sys/zfs_context.h> |
|
32 |
#include <sys/dmu_objset.h> |
|
33 |
#include <sys/dmu_traverse.h> |
|
34 |
#include <sys/dsl_dataset.h> |
|
35 |
#include <sys/dsl_dir.h> |
|
36 |
#include <sys/dsl_pool.h> |
|
2199 | 37 |
#include <sys/dsl_synctask.h> |
2885 | 38 |
#include <sys/dsl_prop.h> |
789 | 39 |
#include <sys/dmu_zfetch.h> |
40 |
#include <sys/zfs_ioctl.h> |
|
41 |
#include <sys/zap.h> |
|
1544 | 42 |
#include <sys/zio_checksum.h> |
11935
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43 |
#include <sys/sa.h> |
2688
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44 |
#ifdef _KERNEL |
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45 |
#include <sys/vmsystm.h> |
7315
cdba25672122
6735592 "zio" vmem arenas are confusing, not reported separately
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46 |
#include <sys/zfs_znode.h> |
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47 |
#endif |
789 | 48 |
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49 |
const dmu_object_type_info_t dmu_ot[DMU_OT_NUMTYPES] = { |
|
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{ DMU_BSWAP_UINT8, TRUE, "unallocated" }, |
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{ DMU_BSWAP_ZAP, TRUE, "object directory" }, |
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{ DMU_BSWAP_UINT64, TRUE, "object array" }, |
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{ DMU_BSWAP_UINT8, TRUE, "packed nvlist" }, |
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{ DMU_BSWAP_UINT64, TRUE, "packed nvlist size" }, |
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{ DMU_BSWAP_UINT64, TRUE, "bpobj" }, |
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{ DMU_BSWAP_UINT64, TRUE, "bpobj header" }, |
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{ DMU_BSWAP_UINT64, TRUE, "SPA space map header" }, |
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{ DMU_BSWAP_UINT64, TRUE, "SPA space map" }, |
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{ DMU_BSWAP_UINT64, TRUE, "ZIL intent log" }, |
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{ DMU_BSWAP_DNODE, TRUE, "DMU dnode" }, |
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{ DMU_BSWAP_OBJSET, TRUE, "DMU objset" }, |
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{ DMU_BSWAP_UINT64, TRUE, "DSL directory" }, |
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{ DMU_BSWAP_ZAP, TRUE, "DSL directory child map"}, |
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{ DMU_BSWAP_ZAP, TRUE, "DSL dataset snap map" }, |
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{ DMU_BSWAP_ZAP, TRUE, "DSL props" }, |
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{ DMU_BSWAP_UINT64, TRUE, "DSL dataset" }, |
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{ DMU_BSWAP_ZNODE, TRUE, "ZFS znode" }, |
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{ DMU_BSWAP_OLDACL, TRUE, "ZFS V0 ACL" }, |
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{ DMU_BSWAP_UINT8, FALSE, "ZFS plain file" }, |
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{ DMU_BSWAP_ZAP, TRUE, "ZFS directory" }, |
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{ DMU_BSWAP_ZAP, TRUE, "ZFS master node" }, |
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{ DMU_BSWAP_ZAP, TRUE, "ZFS delete queue" }, |
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{ DMU_BSWAP_UINT8, FALSE, "zvol object" }, |
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74 |
{ DMU_BSWAP_ZAP, TRUE, "zvol prop" }, |
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{ DMU_BSWAP_UINT8, FALSE, "other uint8[]" }, |
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{ DMU_BSWAP_UINT64, FALSE, "other uint64[]" }, |
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77 |
{ DMU_BSWAP_ZAP, TRUE, "other ZAP" }, |
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{ DMU_BSWAP_ZAP, TRUE, "persistent error log" }, |
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79 |
{ DMU_BSWAP_UINT8, TRUE, "SPA history" }, |
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80 |
{ DMU_BSWAP_UINT64, TRUE, "SPA history offsets" }, |
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81 |
{ DMU_BSWAP_ZAP, TRUE, "Pool properties" }, |
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82 |
{ DMU_BSWAP_ZAP, TRUE, "DSL permissions" }, |
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83 |
{ DMU_BSWAP_ACL, TRUE, "ZFS ACL" }, |
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84 |
{ DMU_BSWAP_UINT8, TRUE, "ZFS SYSACL" }, |
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85 |
{ DMU_BSWAP_UINT8, TRUE, "FUID table" }, |
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86 |
{ DMU_BSWAP_UINT64, TRUE, "FUID table size" }, |
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87 |
{ DMU_BSWAP_ZAP, TRUE, "DSL dataset next clones"}, |
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88 |
{ DMU_BSWAP_ZAP, TRUE, "scan work queue" }, |
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89 |
{ DMU_BSWAP_ZAP, TRUE, "ZFS user/group used" }, |
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90 |
{ DMU_BSWAP_ZAP, TRUE, "ZFS user/group quota" }, |
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91 |
{ DMU_BSWAP_ZAP, TRUE, "snapshot refcount tags"}, |
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92 |
{ DMU_BSWAP_ZAP, TRUE, "DDT ZAP algorithm" }, |
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93 |
{ DMU_BSWAP_ZAP, TRUE, "DDT statistics" }, |
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94 |
{ DMU_BSWAP_UINT8, TRUE, "System attributes" }, |
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95 |
{ DMU_BSWAP_ZAP, TRUE, "SA master node" }, |
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96 |
{ DMU_BSWAP_ZAP, TRUE, "SA attr registration" }, |
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97 |
{ DMU_BSWAP_ZAP, TRUE, "SA attr layouts" }, |
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98 |
{ DMU_BSWAP_ZAP, TRUE, "scan translations" }, |
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99 |
{ DMU_BSWAP_UINT8, FALSE, "deduplicated block" }, |
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100 |
{ DMU_BSWAP_ZAP, TRUE, "DSL deadlist map" }, |
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101 |
{ DMU_BSWAP_UINT64, TRUE, "DSL deadlist map hdr" }, |
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102 |
{ DMU_BSWAP_ZAP, TRUE, "DSL dir clones" }, |
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103 |
{ DMU_BSWAP_UINT64, TRUE, "bpobj subobj" } |
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104 |
}; |
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105 |
|
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106 |
const dmu_object_byteswap_info_t dmu_ot_byteswap[DMU_BSWAP_NUMFUNCS] = { |
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107 |
{ byteswap_uint8_array, "uint8" }, |
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108 |
{ byteswap_uint16_array, "uint16" }, |
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109 |
{ byteswap_uint32_array, "uint32" }, |
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110 |
{ byteswap_uint64_array, "uint64" }, |
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111 |
{ zap_byteswap, "zap" }, |
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112 |
{ dnode_buf_byteswap, "dnode" }, |
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113 |
{ dmu_objset_byteswap, "objset" }, |
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114 |
{ zfs_znode_byteswap, "znode" }, |
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115 |
{ zfs_oldacl_byteswap, "oldacl" }, |
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116 |
{ zfs_acl_byteswap, "acl" } |
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117 |
}; |
789 | 118 |
|
119 |
int |
|
1544 | 120 |
dmu_buf_hold(objset_t *os, uint64_t object, uint64_t offset, |
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121 |
void *tag, dmu_buf_t **dbp, int flags) |
789 | 122 |
{ |
123 |
dnode_t *dn; |
|
124 |
uint64_t blkid; |
|
125 |
dmu_buf_impl_t *db; |
|
1544 | 126 |
int err; |
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127 |
int db_flags = DB_RF_CANFAIL; |
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128 |
|
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129 |
if (flags & DMU_READ_NO_PREFETCH) |
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130 |
db_flags |= DB_RF_NOPREFETCH; |
789 | 131 |
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132 |
err = dnode_hold(os, object, FTAG, &dn); |
1544 | 133 |
if (err) |
134 |
return (err); |
|
789 | 135 |
blkid = dbuf_whichblock(dn, offset); |
136 |
rw_enter(&dn->dn_struct_rwlock, RW_READER); |
|
1544 | 137 |
db = dbuf_hold(dn, blkid, tag); |
789 | 138 |
rw_exit(&dn->dn_struct_rwlock); |
1544 | 139 |
if (db == NULL) { |
140 |
err = EIO; |
|
141 |
} else { |
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142 |
err = dbuf_read(db, NULL, db_flags); |
1544 | 143 |
if (err) { |
144 |
dbuf_rele(db, tag); |
|
145 |
db = NULL; |
|
146 |
} |
|
147 |
} |
|
148 |
||
789 | 149 |
dnode_rele(dn, FTAG); |
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150 |
*dbp = &db->db; /* NULL db plus first field offset is NULL */ |
1544 | 151 |
return (err); |
789 | 152 |
} |
153 |
||
154 |
int |
|
155 |
dmu_bonus_max(void) |
|
156 |
{ |
|
157 |
return (DN_MAX_BONUSLEN); |
|
158 |
} |
|
159 |
||
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160 |
int |
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161 |
dmu_set_bonus(dmu_buf_t *db_fake, int newsize, dmu_tx_t *tx) |
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162 |
{ |
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163 |
dmu_buf_impl_t *db = (dmu_buf_impl_t *)db_fake; |
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164 |
dnode_t *dn; |
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165 |
int error; |
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166 |
|
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167 |
DB_DNODE_ENTER(db); |
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168 |
dn = DB_DNODE(db); |
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169 |
|
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170 |
if (dn->dn_bonus != db) { |
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171 |
error = EINVAL; |
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172 |
} else if (newsize < 0 || newsize > db_fake->db_size) { |
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173 |
error = EINVAL; |
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174 |
} else { |
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175 |
dnode_setbonuslen(dn, newsize, tx); |
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176 |
error = 0; |
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177 |
} |
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178 |
|
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179 |
DB_DNODE_EXIT(db); |
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180 |
return (error); |
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181 |
} |
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182 |
|
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183 |
int |
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184 |
dmu_set_bonustype(dmu_buf_t *db_fake, dmu_object_type_t type, dmu_tx_t *tx) |
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185 |
{ |
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|
186 |
dmu_buf_impl_t *db = (dmu_buf_impl_t *)db_fake; |
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|
187 |
dnode_t *dn; |
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|
188 |
int error; |
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189 |
|
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190 |
DB_DNODE_ENTER(db); |
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|
191 |
dn = DB_DNODE(db); |
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|
192 |
|
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|
193 |
if (!DMU_OT_IS_VALID(type)) { |
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|
194 |
error = EINVAL; |
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|
195 |
} else if (dn->dn_bonus != db) { |
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|
196 |
error = EINVAL; |
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|
197 |
} else { |
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|
198 |
dnode_setbonus_type(dn, type, tx); |
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|
199 |
error = 0; |
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200 |
} |
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|
201 |
|
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|
202 |
DB_DNODE_EXIT(db); |
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203 |
return (error); |
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204 |
} |
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|
205 |
|
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206 |
dmu_object_type_t |
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207 |
dmu_get_bonustype(dmu_buf_t *db_fake) |
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208 |
{ |
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|
209 |
dmu_buf_impl_t *db = (dmu_buf_impl_t *)db_fake; |
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|
210 |
dnode_t *dn; |
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|
211 |
dmu_object_type_t type; |
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|
212 |
|
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213 |
DB_DNODE_ENTER(db); |
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214 |
dn = DB_DNODE(db); |
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215 |
type = dn->dn_bonustype; |
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216 |
DB_DNODE_EXIT(db); |
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217 |
|
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218 |
return (type); |
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|
219 |
} |
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220 |
|
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221 |
int |
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222 |
dmu_rm_spill(objset_t *os, uint64_t object, dmu_tx_t *tx) |
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223 |
{ |
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|
224 |
dnode_t *dn; |
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|
225 |
int error; |
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|
226 |
|
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227 |
error = dnode_hold(os, object, FTAG, &dn); |
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|
228 |
dbuf_rm_spill(dn, tx); |
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|
229 |
rw_enter(&dn->dn_struct_rwlock, RW_WRITER); |
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|
230 |
dnode_rm_spill(dn, tx); |
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|
231 |
rw_exit(&dn->dn_struct_rwlock); |
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|
232 |
dnode_rele(dn, FTAG); |
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233 |
return (error); |
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234 |
} |
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235 |
|
789 | 236 |
/* |
1544 | 237 |
* returns ENOENT, EIO, or 0. |
789 | 238 |
*/ |
1544 | 239 |
int |
240 |
dmu_bonus_hold(objset_t *os, uint64_t object, void *tag, dmu_buf_t **dbp) |
|
789 | 241 |
{ |
1544 | 242 |
dnode_t *dn; |
789 | 243 |
dmu_buf_impl_t *db; |
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|
244 |
int error; |
789 | 245 |
|
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|
246 |
error = dnode_hold(os, object, FTAG, &dn); |
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247 |
if (error) |
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|
248 |
return (error); |
789 | 249 |
|
1544 | 250 |
rw_enter(&dn->dn_struct_rwlock, RW_READER); |
251 |
if (dn->dn_bonus == NULL) { |
|
789 | 252 |
rw_exit(&dn->dn_struct_rwlock); |
1544 | 253 |
rw_enter(&dn->dn_struct_rwlock, RW_WRITER); |
254 |
if (dn->dn_bonus == NULL) |
|
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|
255 |
dbuf_create_bonus(dn); |
789 | 256 |
} |
1544 | 257 |
db = dn->dn_bonus; |
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|
258 |
|
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|
259 |
/* as long as the bonus buf is held, the dnode will be held */ |
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|
260 |
if (refcount_add(&db->db_holds, tag) == 1) { |
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|
261 |
VERIFY(dnode_add_ref(dn, db)); |
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|
262 |
(void) atomic_inc_32_nv(&dn->dn_dbufs_count); |
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|
263 |
} |
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|
264 |
|
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|
265 |
/* |
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|
266 |
* Wait to drop dn_struct_rwlock until after adding the bonus dbuf's |
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267 |
* hold and incrementing the dbuf count to ensure that dnode_move() sees |
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|
268 |
* a dnode hold for every dbuf. |
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269 |
*/ |
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|
270 |
rw_exit(&dn->dn_struct_rwlock); |
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|
271 |
|
789 | 272 |
dnode_rele(dn, FTAG); |
1544 | 273 |
|
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|
274 |
VERIFY(0 == dbuf_read(db, NULL, DB_RF_MUST_SUCCEED | DB_RF_NOPREFETCH)); |
1544 | 275 |
|
276 |
*dbp = &db->db; |
|
277 |
return (0); |
|
789 | 278 |
} |
279 |
||
2391 | 280 |
/* |
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* returns ENOENT, EIO, or 0. |
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282 |
* |
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* This interface will allocate a blank spill dbuf when a spill blk |
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* doesn't already exist on the dnode. |
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285 |
* |
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286 |
* if you only want to find an already existing spill db, then |
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287 |
* dmu_spill_hold_existing() should be used. |
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288 |
*/ |
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289 |
int |
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290 |
dmu_spill_hold_by_dnode(dnode_t *dn, uint32_t flags, void *tag, dmu_buf_t **dbp) |
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291 |
{ |
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292 |
dmu_buf_impl_t *db = NULL; |
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293 |
int err; |
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294 |
|
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295 |
if ((flags & DB_RF_HAVESTRUCT) == 0) |
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296 |
rw_enter(&dn->dn_struct_rwlock, RW_READER); |
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297 |
|
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298 |
db = dbuf_hold(dn, DMU_SPILL_BLKID, tag); |
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299 |
|
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300 |
if ((flags & DB_RF_HAVESTRUCT) == 0) |
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301 |
rw_exit(&dn->dn_struct_rwlock); |
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302 |
|
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303 |
ASSERT(db != NULL); |
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err = dbuf_read(db, NULL, flags); |
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if (err == 0) |
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306 |
*dbp = &db->db; |
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307 |
else |
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308 |
dbuf_rele(db, tag); |
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return (err); |
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310 |
} |
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311 |
|
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312 |
int |
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313 |
dmu_spill_hold_existing(dmu_buf_t *bonus, void *tag, dmu_buf_t **dbp) |
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314 |
{ |
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dmu_buf_impl_t *db = (dmu_buf_impl_t *)bonus; |
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dnode_t *dn; |
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int err; |
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318 |
|
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DB_DNODE_ENTER(db); |
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dn = DB_DNODE(db); |
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321 |
|
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322 |
if (spa_version(dn->dn_objset->os_spa) < SPA_VERSION_SA) { |
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323 |
err = EINVAL; |
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324 |
} else { |
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325 |
rw_enter(&dn->dn_struct_rwlock, RW_READER); |
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326 |
|
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327 |
if (!dn->dn_have_spill) { |
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err = ENOENT; |
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329 |
} else { |
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err = dmu_spill_hold_by_dnode(dn, |
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331 |
DB_RF_HAVESTRUCT | DB_RF_CANFAIL, tag, dbp); |
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332 |
} |
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333 |
|
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334 |
rw_exit(&dn->dn_struct_rwlock); |
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335 |
} |
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336 |
|
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337 |
DB_DNODE_EXIT(db); |
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338 |
return (err); |
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339 |
} |
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340 |
|
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341 |
int |
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342 |
dmu_spill_hold_by_bonus(dmu_buf_t *bonus, void *tag, dmu_buf_t **dbp) |
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343 |
{ |
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344 |
dmu_buf_impl_t *db = (dmu_buf_impl_t *)bonus; |
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345 |
dnode_t *dn; |
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346 |
int err; |
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347 |
|
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348 |
DB_DNODE_ENTER(db); |
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349 |
dn = DB_DNODE(db); |
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350 |
err = dmu_spill_hold_by_dnode(dn, DB_RF_CANFAIL, tag, dbp); |
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351 |
DB_DNODE_EXIT(db); |
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352 |
|
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353 |
return (err); |
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354 |
} |
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355 |
|
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|
356 |
/* |
2391 | 357 |
* Note: longer-term, we should modify all of the dmu_buf_*() interfaces |
358 |
* to take a held dnode rather than <os, object> -- the lookup is wasteful, |
|
359 |
* and can induce severe lock contention when writing to several files |
|
360 |
* whose dnodes are in the same block. |
|
361 |
*/ |
|
362 |
static int |
|
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|
363 |
dmu_buf_hold_array_by_dnode(dnode_t *dn, uint64_t offset, uint64_t length, |
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|
364 |
int read, void *tag, int *numbufsp, dmu_buf_t ***dbpp, uint32_t flags) |
789 | 365 |
{ |
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|
366 |
dsl_pool_t *dp = NULL; |
789 | 367 |
dmu_buf_t **dbp; |
368 |
uint64_t blkid, nblks, i; |
|
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|
369 |
uint32_t dbuf_flags; |
1544 | 370 |
int err; |
371 |
zio_t *zio; |
|
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|
372 |
hrtime_t start; |
1544 | 373 |
|
374 |
ASSERT(length <= DMU_MAX_ACCESS); |
|
789 | 375 |
|
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|
376 |
dbuf_flags = DB_RF_CANFAIL | DB_RF_NEVERWAIT | DB_RF_HAVESTRUCT; |
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|
377 |
if (flags & DMU_READ_NO_PREFETCH || length > zfetch_array_rd_sz) |
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|
378 |
dbuf_flags |= DB_RF_NOPREFETCH; |
1544 | 379 |
|
789 | 380 |
rw_enter(&dn->dn_struct_rwlock, RW_READER); |
381 |
if (dn->dn_datablkshift) { |
|
382 |
int blkshift = dn->dn_datablkshift; |
|
383 |
nblks = (P2ROUNDUP(offset+length, 1ULL<<blkshift) - |
|
3912 | 384 |
P2ALIGN(offset, 1ULL<<blkshift)) >> blkshift; |
789 | 385 |
} else { |
3713 | 386 |
if (offset + length > dn->dn_datablksz) { |
387 |
zfs_panic_recover("zfs: accessing past end of object " |
|
388 |
"%llx/%llx (size=%u access=%llu+%llu)", |
|
389 |
(longlong_t)dn->dn_objset-> |
|
390 |
os_dsl_dataset->ds_object, |
|
391 |
(longlong_t)dn->dn_object, dn->dn_datablksz, |
|
392 |
(longlong_t)offset, (longlong_t)length); |
|
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|
393 |
rw_exit(&dn->dn_struct_rwlock); |
3713 | 394 |
return (EIO); |
395 |
} |
|
789 | 396 |
nblks = 1; |
397 |
} |
|
1544 | 398 |
dbp = kmem_zalloc(sizeof (dmu_buf_t *) * nblks, KM_SLEEP); |
789 | 399 |
|
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|
400 |
if (dn->dn_objset->os_dsl_dataset) |
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|
401 |
dp = dn->dn_objset->os_dsl_dataset->ds_dir->dd_pool; |
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|
402 |
if (dp && dsl_pool_sync_context(dp)) |
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|
403 |
start = gethrtime(); |
7754
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|
404 |
zio = zio_root(dn->dn_objset->os_spa, NULL, NULL, ZIO_FLAG_CANFAIL); |
789 | 405 |
blkid = dbuf_whichblock(dn, offset); |
406 |
for (i = 0; i < nblks; i++) { |
|
1544 | 407 |
dmu_buf_impl_t *db = dbuf_hold(dn, blkid+i, tag); |
408 |
if (db == NULL) { |
|
409 |
rw_exit(&dn->dn_struct_rwlock); |
|
410 |
dmu_buf_rele_array(dbp, nblks, tag); |
|
411 |
zio_nowait(zio); |
|
412 |
return (EIO); |
|
413 |
} |
|
414 |
/* initiate async i/o */ |
|
2391 | 415 |
if (read) { |
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|
416 |
(void) dbuf_read(db, zio, dbuf_flags); |
1544 | 417 |
} |
418 |
dbp[i] = &db->db; |
|
789 | 419 |
} |
420 |
rw_exit(&dn->dn_struct_rwlock); |
|
421 |
||
1544 | 422 |
/* wait for async i/o */ |
423 |
err = zio_wait(zio); |
|
7468
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|
424 |
/* track read overhead when we are in sync context */ |
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|
425 |
if (dp && dsl_pool_sync_context(dp)) |
23915842aa09
6687412 zfs stuck issuing small txg
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7385
diff
changeset
|
426 |
dp->dp_read_overhead += gethrtime() - start; |
1544 | 427 |
if (err) { |
428 |
dmu_buf_rele_array(dbp, nblks, tag); |
|
429 |
return (err); |
|
789 | 430 |
} |
431 |
||
1544 | 432 |
/* wait for other io to complete */ |
433 |
if (read) { |
|
434 |
for (i = 0; i < nblks; i++) { |
|
435 |
dmu_buf_impl_t *db = (dmu_buf_impl_t *)dbp[i]; |
|
436 |
mutex_enter(&db->db_mtx); |
|
437 |
while (db->db_state == DB_READ || |
|
438 |
db->db_state == DB_FILL) |
|
439 |
cv_wait(&db->db_changed, &db->db_mtx); |
|
440 |
if (db->db_state == DB_UNCACHED) |
|
441 |
err = EIO; |
|
442 |
mutex_exit(&db->db_mtx); |
|
443 |
if (err) { |
|
444 |
dmu_buf_rele_array(dbp, nblks, tag); |
|
445 |
return (err); |
|
446 |
} |
|
447 |
} |
|
448 |
} |
|
789 | 449 |
|
1544 | 450 |
*numbufsp = nblks; |
451 |
*dbpp = dbp; |
|
452 |
return (0); |
|
789 | 453 |
} |
454 |
||
2885 | 455 |
static int |
2391 | 456 |
dmu_buf_hold_array(objset_t *os, uint64_t object, uint64_t offset, |
457 |
uint64_t length, int read, void *tag, int *numbufsp, dmu_buf_t ***dbpp) |
|
458 |
{ |
|
459 |
dnode_t *dn; |
|
460 |
int err; |
|
461 |
||
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10242
diff
changeset
|
462 |
err = dnode_hold(os, object, FTAG, &dn); |
2391 | 463 |
if (err) |
464 |
return (err); |
|
465 |
||
466 |
err = dmu_buf_hold_array_by_dnode(dn, offset, length, read, tag, |
|
9512
64cafcbcc337
6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents:
9412
diff
changeset
|
467 |
numbufsp, dbpp, DMU_READ_PREFETCH); |
2391 | 468 |
|
469 |
dnode_rele(dn, FTAG); |
|
470 |
||
471 |
return (err); |
|
472 |
} |
|
473 |
||
474 |
int |
|
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
475 |
dmu_buf_hold_array_by_bonus(dmu_buf_t *db_fake, uint64_t offset, |
2391 | 476 |
uint64_t length, int read, void *tag, int *numbufsp, dmu_buf_t ***dbpp) |
477 |
{ |
|
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
478 |
dmu_buf_impl_t *db = (dmu_buf_impl_t *)db_fake; |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
479 |
dnode_t *dn; |
2391 | 480 |
int err; |
481 |
||
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
482 |
DB_DNODE_ENTER(db); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
483 |
dn = DB_DNODE(db); |
2391 | 484 |
err = dmu_buf_hold_array_by_dnode(dn, offset, length, read, tag, |
9512
64cafcbcc337
6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents:
9412
diff
changeset
|
485 |
numbufsp, dbpp, DMU_READ_PREFETCH); |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
486 |
DB_DNODE_EXIT(db); |
2391 | 487 |
|
488 |
return (err); |
|
489 |
} |
|
490 |
||
789 | 491 |
void |
1544 | 492 |
dmu_buf_rele_array(dmu_buf_t **dbp_fake, int numbufs, void *tag) |
789 | 493 |
{ |
494 |
int i; |
|
495 |
dmu_buf_impl_t **dbp = (dmu_buf_impl_t **)dbp_fake; |
|
496 |
||
497 |
if (numbufs == 0) |
|
498 |
return; |
|
499 |
||
1544 | 500 |
for (i = 0; i < numbufs; i++) { |
501 |
if (dbp[i]) |
|
502 |
dbuf_rele(dbp[i], tag); |
|
503 |
} |
|
789 | 504 |
|
505 |
kmem_free(dbp, sizeof (dmu_buf_t *) * numbufs); |
|
506 |
} |
|
507 |
||
508 |
void |
|
509 |
dmu_prefetch(objset_t *os, uint64_t object, uint64_t offset, uint64_t len) |
|
510 |
{ |
|
511 |
dnode_t *dn; |
|
512 |
uint64_t blkid; |
|
1544 | 513 |
int nblks, i, err; |
789 | 514 |
|
2986 | 515 |
if (zfs_prefetch_disable) |
516 |
return; |
|
517 |
||
789 | 518 |
if (len == 0) { /* they're interested in the bonus buffer */ |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
519 |
dn = DMU_META_DNODE(os); |
789 | 520 |
|
521 |
if (object == 0 || object >= DN_MAX_OBJECT) |
|
522 |
return; |
|
523 |
||
524 |
rw_enter(&dn->dn_struct_rwlock, RW_READER); |
|
525 |
blkid = dbuf_whichblock(dn, object * sizeof (dnode_phys_t)); |
|
526 |
dbuf_prefetch(dn, blkid); |
|
527 |
rw_exit(&dn->dn_struct_rwlock); |
|
528 |
return; |
|
529 |
} |
|
530 |
||
531 |
/* |
|
532 |
* XXX - Note, if the dnode for the requested object is not |
|
533 |
* already cached, we will do a *synchronous* read in the |
|
534 |
* dnode_hold() call. The same is true for any indirects. |
|
535 |
*/ |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10242
diff
changeset
|
536 |
err = dnode_hold(os, object, FTAG, &dn); |
1544 | 537 |
if (err != 0) |
789 | 538 |
return; |
539 |
||
540 |
rw_enter(&dn->dn_struct_rwlock, RW_READER); |
|
541 |
if (dn->dn_datablkshift) { |
|
542 |
int blkshift = dn->dn_datablkshift; |
|
543 |
nblks = (P2ROUNDUP(offset+len, 1<<blkshift) - |
|
3912 | 544 |
P2ALIGN(offset, 1<<blkshift)) >> blkshift; |
789 | 545 |
} else { |
546 |
nblks = (offset < dn->dn_datablksz); |
|
547 |
} |
|
548 |
||
549 |
if (nblks != 0) { |
|
550 |
blkid = dbuf_whichblock(dn, offset); |
|
551 |
for (i = 0; i < nblks; i++) |
|
552 |
dbuf_prefetch(dn, blkid+i); |
|
553 |
} |
|
554 |
||
555 |
rw_exit(&dn->dn_struct_rwlock); |
|
556 |
||
557 |
dnode_rele(dn, FTAG); |
|
558 |
} |
|
559 |
||
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
560 |
/* |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
561 |
* Get the next "chunk" of file data to free. We traverse the file from |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
562 |
* the end so that the file gets shorter over time (if we crashes in the |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
563 |
* middle, this will leave us in a better state). We find allocated file |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
564 |
* data by simply searching the allocated level 1 indirects. |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
565 |
*/ |
6992 | 566 |
static int |
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
567 |
get_next_chunk(dnode_t *dn, uint64_t *start, uint64_t limit) |
6992 | 568 |
{ |
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
569 |
uint64_t len = *start - limit; |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
570 |
uint64_t blkcnt = 0; |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
571 |
uint64_t maxblks = DMU_MAX_ACCESS / (1ULL << (dn->dn_indblkshift + 1)); |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
572 |
uint64_t iblkrange = |
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7315
diff
changeset
|
573 |
dn->dn_datablksz * EPB(dn->dn_indblkshift, SPA_BLKPTRSHIFT); |
6992 | 574 |
|
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
575 |
ASSERT(limit <= *start); |
6992 | 576 |
|
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
577 |
if (len <= iblkrange * maxblks) { |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
578 |
*start = limit; |
6992 | 579 |
return (0); |
580 |
} |
|
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
581 |
ASSERT(ISP2(iblkrange)); |
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7315
diff
changeset
|
582 |
|
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
583 |
while (*start > limit && blkcnt < maxblks) { |
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7315
diff
changeset
|
584 |
int err; |
6992 | 585 |
|
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
586 |
/* find next allocated L1 indirect */ |
6992 | 587 |
err = dnode_next_offset(dn, |
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
588 |
DNODE_FIND_BACKWARDS, start, 2, 1, 0); |
6992 | 589 |
|
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
590 |
/* if there are no more, then we are done */ |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
591 |
if (err == ESRCH) { |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
592 |
*start = limit; |
6992 | 593 |
return (0); |
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
594 |
} else if (err) { |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
595 |
return (err); |
6992 | 596 |
} |
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
597 |
blkcnt += 1; |
6992 | 598 |
|
9950
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
599 |
/* reset offset to end of "next" block back */ |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
600 |
*start = P2ALIGN(*start, iblkrange); |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
601 |
if (*start <= limit) |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
602 |
*start = limit; |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
603 |
else |
78fc41aa9bc5
6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
9512
diff
changeset
|
604 |
*start -= 1; |
6992 | 605 |
} |
606 |
return (0); |
|
607 |
} |
|
608 |
||
609 |
static int |
|
610 |
dmu_free_long_range_impl(objset_t *os, dnode_t *dn, uint64_t offset, |
|
611 |
uint64_t length, boolean_t free_dnode) |
|
612 |
{ |
|
613 |
dmu_tx_t *tx; |
|
614 |
uint64_t object_size, start, end, len; |
|
615 |
boolean_t trunc = (length == DMU_OBJECT_END); |
|
616 |
int align, err; |
|
617 |
||
618 |
align = 1 << dn->dn_datablkshift; |
|
619 |
ASSERT(align > 0); |
|
620 |
object_size = align == 1 ? dn->dn_datablksz : |
|
621 |
(dn->dn_maxblkid + 1) << dn->dn_datablkshift; |
|
622 |
||
9396
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7872
diff
changeset
|
623 |
end = offset + length; |
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7872
diff
changeset
|
624 |
if (trunc || end > object_size) |
6992 | 625 |
end = object_size; |
626 |
if (end <= offset) |
|
627 |
return (0); |
|
628 |
length = end - offset; |
|
629 |
||
630 |
while (length) { |
|
631 |
start = end; |
|
9396
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7872
diff
changeset
|
632 |
/* assert(offset <= start) */ |
6992 | 633 |
err = get_next_chunk(dn, &start, offset); |
634 |
if (err) |
|
635 |
return (err); |
|
636 |
len = trunc ? DMU_OBJECT_END : end - start; |
|
637 |
||
638 |
tx = dmu_tx_create(os); |
|
639 |
dmu_tx_hold_free(tx, dn->dn_object, start, len); |
|
640 |
err = dmu_tx_assign(tx, TXG_WAIT); |
|
641 |
if (err) { |
|
642 |
dmu_tx_abort(tx); |
|
643 |
return (err); |
|
644 |
} |
|
645 |
||
646 |
dnode_free_range(dn, start, trunc ? -1 : len, tx); |
|
647 |
||
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7315
diff
changeset
|
648 |
if (start == 0 && free_dnode) { |
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7315
diff
changeset
|
649 |
ASSERT(trunc); |
6992 | 650 |
dnode_free(dn, tx); |
7385
f69ff8507427
6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents:
7315
diff
changeset
|
651 |
} |
6992 | 652 |
|
653 |
length -= end - start; |
|
654 |
||
655 |
dmu_tx_commit(tx); |
|
656 |
end = start; |
|
657 |
} |
|
658 |
return (0); |
|
659 |
} |
|
660 |
||
661 |
int |
|
662 |
dmu_free_long_range(objset_t *os, uint64_t object, |
|
663 |
uint64_t offset, uint64_t length) |
|
664 |
{ |
|
665 |
dnode_t *dn; |
|
666 |
int err; |
|
667 |
||
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10242
diff
changeset
|
668 |
err = dnode_hold(os, object, FTAG, &dn); |
6992 | 669 |
if (err != 0) |
670 |
return (err); |
|
671 |
err = dmu_free_long_range_impl(os, dn, offset, length, FALSE); |
|
672 |
dnode_rele(dn, FTAG); |
|
673 |
return (err); |
|
674 |
} |
|
675 |
||
676 |
int |
|
677 |
dmu_free_object(objset_t *os, uint64_t object) |
|
678 |
{ |
|
679 |
dnode_t *dn; |
|
680 |
dmu_tx_t *tx; |
|
681 |
int err; |
|
682 |
||
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10242
diff
changeset
|
683 |
err = dnode_hold_impl(os, object, DNODE_MUST_BE_ALLOCATED, |
6992 | 684 |
FTAG, &dn); |
685 |
if (err != 0) |
|
686 |
return (err); |
|
687 |
if (dn->dn_nlevels == 1) { |
|
688 |
tx = dmu_tx_create(os); |
|
689 |
dmu_tx_hold_bonus(tx, object); |
|
690 |
dmu_tx_hold_free(tx, dn->dn_object, 0, DMU_OBJECT_END); |
|
691 |
err = dmu_tx_assign(tx, TXG_WAIT); |
|
692 |
if (err == 0) { |
|
693 |
dnode_free_range(dn, 0, DMU_OBJECT_END, tx); |
|
694 |
dnode_free(dn, tx); |
|
695 |
dmu_tx_commit(tx); |
|
696 |
} else { |
|
697 |
dmu_tx_abort(tx); |
|
698 |
} |
|
699 |
} else { |
|
700 |
err = dmu_free_long_range_impl(os, dn, 0, DMU_OBJECT_END, TRUE); |
|
701 |
} |
|
702 |
dnode_rele(dn, FTAG); |
|
703 |
return (err); |
|
704 |
} |
|
705 |
||
1544 | 706 |
int |
789 | 707 |
dmu_free_range(objset_t *os, uint64_t object, uint64_t offset, |
708 |
uint64_t size, dmu_tx_t *tx) |
|
709 |
{ |
|
1544 | 710 |
dnode_t *dn; |
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10242
diff
changeset
|
711 |
int err = dnode_hold(os, object, FTAG, &dn); |
1544 | 712 |
if (err) |
713 |
return (err); |
|
789 | 714 |
ASSERT(offset < UINT64_MAX); |
715 |
ASSERT(size == -1ULL || size <= UINT64_MAX - offset); |
|
716 |
dnode_free_range(dn, offset, size, tx); |
|
717 |
dnode_rele(dn, FTAG); |
|
1544 | 718 |
return (0); |
789 | 719 |
} |
720 |
||
1544 | 721 |
int |
722 |
dmu_read(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, |
|
9512
64cafcbcc337
6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents:
9412
diff
changeset
|
723 |
void *buf, uint32_t flags) |
789 | 724 |
{ |
725 |
dnode_t *dn; |
|
726 |
dmu_buf_t **dbp; |
|
10209
91f47f0e7728
6830541 zfs_get_data trips on a verify
Mark J Musante <Mark.Musante@Sun.COM>
parents:
9951
diff
changeset
|
727 |
int numbufs, err; |
789 | 728 |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10242
diff
changeset
|
729 |
err = dnode_hold(os, object, FTAG, &dn); |
1544 | 730 |
if (err) |
731 |
return (err); |
|
3638
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
732 |
|
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
733 |
/* |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
734 |
* Deal with odd block sizes, where there can't be data past the first |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
735 |
* block. If we ever do the tail block optimization, we will need to |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
736 |
* handle that here as well. |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
737 |
*/ |
10209
91f47f0e7728
6830541 zfs_get_data trips on a verify
Mark J Musante <Mark.Musante@Sun.COM>
parents:
9951
diff
changeset
|
738 |
if (dn->dn_maxblkid == 0) { |
789 | 739 |
int newsz = offset > dn->dn_datablksz ? 0 : |
740 |
MIN(size, dn->dn_datablksz - offset); |
|
741 |
bzero((char *)buf + newsz, size - newsz); |
|
742 |
size = newsz; |
|
743 |
} |
|
744 |
||
745 |
while (size > 0) { |
|
746 |
uint64_t mylen = MIN(size, DMU_MAX_ACCESS / 2); |
|
10209
91f47f0e7728
6830541 zfs_get_data trips on a verify
Mark J Musante <Mark.Musante@Sun.COM>
parents:
9951
diff
changeset
|
747 |
int i; |
789 | 748 |
|
749 |
/* |
|
750 |
* NB: we could do this block-at-a-time, but it's nice |
|
751 |
* to be reading in parallel. |
|
752 |
*/ |
|
2885 | 753 |
err = dmu_buf_hold_array_by_dnode(dn, offset, mylen, |
9512
64cafcbcc337
6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents:
9412
diff
changeset
|
754 |
TRUE, FTAG, &numbufs, &dbp, flags); |
1544 | 755 |
if (err) |
4944
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4543
diff
changeset
|
756 |
break; |
789 | 757 |
|
758 |
for (i = 0; i < numbufs; i++) { |
|
759 |
int tocpy; |
|
760 |
int bufoff; |
|
761 |
dmu_buf_t *db = dbp[i]; |
|
762 |
||
763 |
ASSERT(size > 0); |
|
764 |
||
765 |
bufoff = offset - db->db_offset; |
|
766 |
tocpy = (int)MIN(db->db_size - bufoff, size); |
|
767 |
||
768 |
bcopy((char *)db->db_data + bufoff, buf, tocpy); |
|
769 |
||
770 |
offset += tocpy; |
|
771 |
size -= tocpy; |
|
772 |
buf = (char *)buf + tocpy; |
|
773 |
} |
|
1544 | 774 |
dmu_buf_rele_array(dbp, numbufs, FTAG); |
789 | 775 |
} |
2885 | 776 |
dnode_rele(dn, FTAG); |
4944
96d96f8de974
6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents:
4543
diff
changeset
|
777 |
return (err); |
789 | 778 |
} |
779 |
||
780 |
void |
|
781 |
dmu_write(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, |
|
782 |
const void *buf, dmu_tx_t *tx) |
|
783 |
{ |
|
784 |
dmu_buf_t **dbp; |
|
785 |
int numbufs, i; |
|
786 |
||
2391 | 787 |
if (size == 0) |
788 |
return; |
|
789 |
||
1544 | 790 |
VERIFY(0 == dmu_buf_hold_array(os, object, offset, size, |
791 |
FALSE, FTAG, &numbufs, &dbp)); |
|
789 | 792 |
|
793 |
for (i = 0; i < numbufs; i++) { |
|
794 |
int tocpy; |
|
795 |
int bufoff; |
|
796 |
dmu_buf_t *db = dbp[i]; |
|
797 |
||
798 |
ASSERT(size > 0); |
|
799 |
||
800 |
bufoff = offset - db->db_offset; |
|
801 |
tocpy = (int)MIN(db->db_size - bufoff, size); |
|
802 |
||
803 |
ASSERT(i == 0 || i == numbufs-1 || tocpy == db->db_size); |
|
804 |
||
805 |
if (tocpy == db->db_size) |
|
806 |
dmu_buf_will_fill(db, tx); |
|
807 |
else |
|
808 |
dmu_buf_will_dirty(db, tx); |
|
809 |
||
810 |
bcopy(buf, (char *)db->db_data + bufoff, tocpy); |
|
811 |
||
812 |
if (tocpy == db->db_size) |
|
813 |
dmu_buf_fill_done(db, tx); |
|
814 |
||
815 |
offset += tocpy; |
|
816 |
size -= tocpy; |
|
817 |
buf = (char *)buf + tocpy; |
|
818 |
} |
|
1544 | 819 |
dmu_buf_rele_array(dbp, numbufs, FTAG); |
789 | 820 |
} |
821 |
||
7872
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
822 |
void |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
823 |
dmu_prealloc(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
824 |
dmu_tx_t *tx) |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
825 |
{ |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
826 |
dmu_buf_t **dbp; |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
827 |
int numbufs, i; |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
828 |
|
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
829 |
if (size == 0) |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
830 |
return; |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
831 |
|
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
832 |
VERIFY(0 == dmu_buf_hold_array(os, object, offset, size, |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
833 |
FALSE, FTAG, &numbufs, &dbp)); |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
834 |
|
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
835 |
for (i = 0; i < numbufs; i++) { |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
836 |
dmu_buf_t *db = dbp[i]; |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
837 |
|
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
838 |
dmu_buf_will_not_fill(db, tx); |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
839 |
} |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
840 |
dmu_buf_rele_array(dbp, numbufs, FTAG); |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
841 |
} |
40a9434212f6
6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents:
7754
diff
changeset
|
842 |
|
11539
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
843 |
/* |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
844 |
* DMU support for xuio |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
845 |
*/ |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
846 |
kstat_t *xuio_ksp = NULL; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
847 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
848 |
int |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
849 |
dmu_xuio_init(xuio_t *xuio, int nblk) |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
850 |
{ |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
851 |
dmu_xuio_t *priv; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
852 |
uio_t *uio = &xuio->xu_uio; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
853 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
854 |
uio->uio_iovcnt = nblk; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
855 |
uio->uio_iov = kmem_zalloc(nblk * sizeof (iovec_t), KM_SLEEP); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
856 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
857 |
priv = kmem_zalloc(sizeof (dmu_xuio_t), KM_SLEEP); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
858 |
priv->cnt = nblk; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
859 |
priv->bufs = kmem_zalloc(nblk * sizeof (arc_buf_t *), KM_SLEEP); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
860 |
priv->iovp = uio->uio_iov; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
861 |
XUIO_XUZC_PRIV(xuio) = priv; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
862 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
863 |
if (XUIO_XUZC_RW(xuio) == UIO_READ) |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
864 |
XUIOSTAT_INCR(xuiostat_onloan_rbuf, nblk); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
865 |
else |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
866 |
XUIOSTAT_INCR(xuiostat_onloan_wbuf, nblk); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
867 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
868 |
return (0); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
869 |
} |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
870 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
871 |
void |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
872 |
dmu_xuio_fini(xuio_t *xuio) |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
873 |
{ |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
874 |
dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
875 |
int nblk = priv->cnt; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
876 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
877 |
kmem_free(priv->iovp, nblk * sizeof (iovec_t)); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
878 |
kmem_free(priv->bufs, nblk * sizeof (arc_buf_t *)); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
879 |
kmem_free(priv, sizeof (dmu_xuio_t)); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
880 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
881 |
if (XUIO_XUZC_RW(xuio) == UIO_READ) |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
882 |
XUIOSTAT_INCR(xuiostat_onloan_rbuf, -nblk); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
883 |
else |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
884 |
XUIOSTAT_INCR(xuiostat_onloan_wbuf, -nblk); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
885 |
} |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
886 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
887 |
/* |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
888 |
* Initialize iov[priv->next] and priv->bufs[priv->next] with { off, n, abuf } |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
889 |
* and increase priv->next by 1. |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
890 |
*/ |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
891 |
int |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
892 |
dmu_xuio_add(xuio_t *xuio, arc_buf_t *abuf, offset_t off, size_t n) |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
893 |
{ |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
894 |
struct iovec *iov; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
895 |
uio_t *uio = &xuio->xu_uio; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
896 |
dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
897 |
int i = priv->next++; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
898 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
899 |
ASSERT(i < priv->cnt); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
900 |
ASSERT(off + n <= arc_buf_size(abuf)); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
901 |
iov = uio->uio_iov + i; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
902 |
iov->iov_base = (char *)abuf->b_data + off; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
903 |
iov->iov_len = n; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
904 |
priv->bufs[i] = abuf; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
905 |
return (0); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
906 |
} |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
907 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
908 |
int |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
909 |
dmu_xuio_cnt(xuio_t *xuio) |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
910 |
{ |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
911 |
dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
912 |
return (priv->cnt); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
913 |
} |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
914 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
915 |
arc_buf_t * |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
916 |
dmu_xuio_arcbuf(xuio_t *xuio, int i) |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
917 |
{ |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
918 |
dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
919 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
920 |
ASSERT(i < priv->cnt); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
921 |
return (priv->bufs[i]); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
922 |
} |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
923 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
924 |
void |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
925 |
dmu_xuio_clear(xuio_t *xuio, int i) |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
926 |
{ |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
927 |
dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
928 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
929 |
ASSERT(i < priv->cnt); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
930 |
priv->bufs[i] = NULL; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
931 |
} |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
932 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
933 |
static void |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
934 |
xuio_stat_init(void) |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
935 |
{ |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
936 |
xuio_ksp = kstat_create("zfs", 0, "xuio_stats", "misc", |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
937 |
KSTAT_TYPE_NAMED, sizeof (xuio_stats) / sizeof (kstat_named_t), |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
938 |
KSTAT_FLAG_VIRTUAL); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
939 |
if (xuio_ksp != NULL) { |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
940 |
xuio_ksp->ks_data = &xuio_stats; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
941 |
kstat_install(xuio_ksp); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
942 |
} |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
943 |
} |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
944 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
945 |
static void |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
946 |
xuio_stat_fini(void) |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
947 |
{ |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
948 |
if (xuio_ksp != NULL) { |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
949 |
kstat_delete(xuio_ksp); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
950 |
xuio_ksp = NULL; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
951 |
} |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
952 |
} |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
953 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
954 |
void |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
955 |
xuio_stat_wbuf_copied() |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
956 |
{ |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
957 |
XUIOSTAT_BUMP(xuiostat_wbuf_copied); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
958 |
} |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
959 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
960 |
void |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
961 |
xuio_stat_wbuf_nocopy() |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
962 |
{ |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
963 |
XUIOSTAT_BUMP(xuiostat_wbuf_nocopy); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
964 |
} |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
965 |
|
789 | 966 |
#ifdef _KERNEL |
967 |
int |
|
3638
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
968 |
dmu_read_uio(objset_t *os, uint64_t object, uio_t *uio, uint64_t size) |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
969 |
{ |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
970 |
dmu_buf_t **dbp; |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
971 |
int numbufs, i, err; |
11539
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
972 |
xuio_t *xuio = NULL; |
3638
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
973 |
|
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
974 |
/* |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
975 |
* NB: we could do this block-at-a-time, but it's nice |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
976 |
* to be reading in parallel. |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
977 |
*/ |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
978 |
err = dmu_buf_hold_array(os, object, uio->uio_loffset, size, TRUE, FTAG, |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
979 |
&numbufs, &dbp); |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
980 |
if (err) |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
981 |
return (err); |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
982 |
|
11539
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
983 |
if (uio->uio_extflg == UIO_XUIO) |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
984 |
xuio = (xuio_t *)uio; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
985 |
|
3638
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
986 |
for (i = 0; i < numbufs; i++) { |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
987 |
int tocpy; |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
988 |
int bufoff; |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
989 |
dmu_buf_t *db = dbp[i]; |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
990 |
|
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
991 |
ASSERT(size > 0); |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
992 |
|
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
993 |
bufoff = uio->uio_loffset - db->db_offset; |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
994 |
tocpy = (int)MIN(db->db_size - bufoff, size); |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
995 |
|
11539
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
996 |
if (xuio) { |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
997 |
dmu_buf_impl_t *dbi = (dmu_buf_impl_t *)db; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
998 |
arc_buf_t *dbuf_abuf = dbi->db_buf; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
999 |
arc_buf_t *abuf = dbuf_loan_arcbuf(dbi); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1000 |
err = dmu_xuio_add(xuio, abuf, bufoff, tocpy); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1001 |
if (!err) { |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1002 |
uio->uio_resid -= tocpy; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1003 |
uio->uio_loffset += tocpy; |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1004 |
} |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1005 |
|
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1006 |
if (abuf == dbuf_abuf) |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1007 |
XUIOSTAT_BUMP(xuiostat_rbuf_nocopy); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1008 |
else |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1009 |
XUIOSTAT_BUMP(xuiostat_rbuf_copied); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1010 |
} else { |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1011 |
err = uiomove((char *)db->db_data + bufoff, tocpy, |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1012 |
UIO_READ, uio); |
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1013 |
} |
3638
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
1014 |
if (err) |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
1015 |
break; |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
1016 |
|
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
1017 |
size -= tocpy; |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
1018 |
} |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
1019 |
dmu_buf_rele_array(dbp, numbufs, FTAG); |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
1020 |
|
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
1021 |
return (err); |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
1022 |
} |
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
1023 |
|
12123
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1024 |
static int |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1025 |
dmu_write_uio_dnode(dnode_t *dn, uio_t *uio, uint64_t size, dmu_tx_t *tx) |
789 | 1026 |
{ |
1027 |
dmu_buf_t **dbp; |
|
12123
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1028 |
int numbufs; |
789 | 1029 |
int err = 0; |
12123
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1030 |
int i; |
789 | 1031 |
|
12123
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1032 |
err = dmu_buf_hold_array_by_dnode(dn, uio->uio_loffset, size, |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1033 |
FALSE, FTAG, &numbufs, &dbp, DMU_READ_PREFETCH); |
1544 | 1034 |
if (err) |
1035 |
return (err); |
|
789 | 1036 |
|
1037 |
for (i = 0; i < numbufs; i++) { |
|
1038 |
int tocpy; |
|
1039 |
int bufoff; |
|
1040 |
dmu_buf_t *db = dbp[i]; |
|
1041 |
||
1042 |
ASSERT(size > 0); |
|
1043 |
||
3638
6b28ebc717aa
6496357 spec_fsync() is useless on devices that do write caching
billm
parents:
3547
diff
changeset
|
1044 |
bufoff = uio->uio_loffset - db->db_offset; |
789 | 1045 |
tocpy = (int)MIN(db->db_size - bufoff, size); |
1046 |
||
1047 |
ASSERT(i == 0 || i == numbufs-1 || tocpy == db->db_size); |
|
1048 |
||
1049 |
if (tocpy == db->db_size) |
|
1050 |
dmu_buf_will_fill(db, tx); |
|
1051 |
else |
|
1052 |
dmu_buf_will_dirty(db, tx); |
|
1053 |
||
1054 |
/* |
|
1055 |
* XXX uiomove could block forever (eg. nfs-backed |
|
1056 |
* pages). There needs to be a uiolockdown() function |
|
1057 |
* to lock the pages in memory, so that uiomove won't |
|
1058 |
* block. |
|
1059 |
*/ |
|
1060 |
err = uiomove((char *)db->db_data + bufoff, tocpy, |
|
1061 |
UIO_WRITE, uio); |
|
1062 |
||
1063 |
if (tocpy == db->db_size) |
|
1064 |
dmu_buf_fill_done(db, tx); |
|
1065 |
||
1066 |
if (err) |
|
1067 |
break; |
|
1068 |
||
1069 |
size -= tocpy; |
|
1070 |
} |
|
12123
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1071 |
|
1544 | 1072 |
dmu_buf_rele_array(dbp, numbufs, FTAG); |
789 | 1073 |
return (err); |
1074 |
} |
|
2688
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1075 |
|
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1076 |
int |
12123
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1077 |
dmu_write_uio_dbuf(dmu_buf_t *zdb, uio_t *uio, uint64_t size, |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1078 |
dmu_tx_t *tx) |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1079 |
{ |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1080 |
dmu_buf_impl_t *db = (dmu_buf_impl_t *)zdb; |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1081 |
dnode_t *dn; |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1082 |
int err; |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1083 |
|
12123
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1084 |
if (size == 0) |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1085 |
return (0); |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1086 |
|
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1087 |
DB_DNODE_ENTER(db); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1088 |
dn = DB_DNODE(db); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1089 |
err = dmu_write_uio_dnode(dn, uio, size, tx); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1090 |
DB_DNODE_EXIT(db); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1091 |
|
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1092 |
return (err); |
12123
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1093 |
} |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1094 |
|
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1095 |
int |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1096 |
dmu_write_uio(objset_t *os, uint64_t object, uio_t *uio, uint64_t size, |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1097 |
dmu_tx_t *tx) |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1098 |
{ |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1099 |
dnode_t *dn; |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1100 |
int err; |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1101 |
|
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1102 |
if (size == 0) |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1103 |
return (0); |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1104 |
|
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1105 |
err = dnode_hold(os, object, FTAG, &dn); |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1106 |
if (err) |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1107 |
return (err); |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1108 |
|
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1109 |
err = dmu_write_uio_dnode(dn, uio, size, tx); |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1110 |
|
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1111 |
dnode_rele(dn, FTAG); |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1112 |
|
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1113 |
return (err); |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1114 |
} |
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1115 |
|
bb40732a982e
6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents:
11935
diff
changeset
|
1116 |
int |
2688
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1117 |
dmu_write_pages(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1118 |
page_t *pp, dmu_tx_t *tx) |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1119 |
{ |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1120 |
dmu_buf_t **dbp; |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1121 |
int numbufs, i; |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1122 |
int err; |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1123 |
|
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1124 |
if (size == 0) |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1125 |
return (0); |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1126 |
|
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1127 |
err = dmu_buf_hold_array(os, object, offset, size, |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1128 |
FALSE, FTAG, &numbufs, &dbp); |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1129 |
if (err) |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1130 |
return (err); |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1131 |
|
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1132 |
for (i = 0; i < numbufs; i++) { |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1133 |
int tocpy, copied, thiscpy; |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1134 |
int bufoff; |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1135 |
dmu_buf_t *db = dbp[i]; |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1136 |
caddr_t va; |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1137 |
|
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1138 |
ASSERT(size > 0); |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1139 |
ASSERT3U(db->db_size, >=, PAGESIZE); |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1140 |
|
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1141 |
bufoff = offset - db->db_offset; |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1142 |
tocpy = (int)MIN(db->db_size - bufoff, size); |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1143 |
|
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1144 |
ASSERT(i == 0 || i == numbufs-1 || tocpy == db->db_size); |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1145 |
|
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1146 |
if (tocpy == db->db_size) |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1147 |
dmu_buf_will_fill(db, tx); |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1148 |
else |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1149 |
dmu_buf_will_dirty(db, tx); |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1150 |
|
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1151 |
for (copied = 0; copied < tocpy; copied += PAGESIZE) { |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1152 |
ASSERT3U(pp->p_offset, ==, db->db_offset + bufoff); |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1153 |
thiscpy = MIN(PAGESIZE, tocpy - copied); |
7315
cdba25672122
6735592 "zio" vmem arenas are confusing, not reported separately
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7237
diff
changeset
|
1154 |
va = zfs_map_page(pp, S_READ); |
2688
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1155 |
bcopy(va, (char *)db->db_data + bufoff, thiscpy); |
7315
cdba25672122
6735592 "zio" vmem arenas are confusing, not reported separately
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents:
7237
diff
changeset
|
1156 |
zfs_unmap_page(pp, va); |
2688
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1157 |
pp = pp->p_next; |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1158 |
bufoff += PAGESIZE; |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1159 |
} |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1160 |
|
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1161 |
if (tocpy == db->db_size) |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1162 |
dmu_buf_fill_done(db, tx); |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1163 |
|
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1164 |
offset += tocpy; |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1165 |
size -= tocpy; |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1166 |
} |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1167 |
dmu_buf_rele_array(dbp, numbufs, FTAG); |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1168 |
return (err); |
12e2ad22b970
6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents:
2676
diff
changeset
|
1169 |
} |
789 | 1170 |
#endif |
1171 |
||
9412
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1172 |
/* |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1173 |
* Allocate a loaned anonymous arc buffer. |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1174 |
*/ |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1175 |
arc_buf_t * |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1176 |
dmu_request_arcbuf(dmu_buf_t *handle, int size) |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1177 |
{ |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1178 |
dmu_buf_impl_t *db = (dmu_buf_impl_t *)handle; |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1179 |
spa_t *spa; |
9412
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1180 |
|
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1181 |
DB_GET_SPA(&spa, db); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1182 |
return (arc_loan_buf(spa, size)); |
9412
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1183 |
} |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1184 |
|
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1185 |
/* |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1186 |
* Free a loaned arc buffer. |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1187 |
*/ |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1188 |
void |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1189 |
dmu_return_arcbuf(arc_buf_t *buf) |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1190 |
{ |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1191 |
arc_return_buf(buf, FTAG); |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1192 |
VERIFY(arc_buf_remove_ref(buf, FTAG) == 1); |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1193 |
} |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1194 |
|
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1195 |
/* |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1196 |
* When possible directly assign passed loaned arc buffer to a dbuf. |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1197 |
* If this is not possible copy the contents of passed arc buf via |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1198 |
* dmu_write(). |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1199 |
*/ |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1200 |
void |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1201 |
dmu_assign_arcbuf(dmu_buf_t *handle, uint64_t offset, arc_buf_t *buf, |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1202 |
dmu_tx_t *tx) |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1203 |
{ |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1204 |
dmu_buf_impl_t *dbuf = (dmu_buf_impl_t *)handle; |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1205 |
dnode_t *dn; |
9412
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1206 |
dmu_buf_impl_t *db; |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1207 |
uint32_t blksz = (uint32_t)arc_buf_size(buf); |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1208 |
uint64_t blkid; |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1209 |
|
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1210 |
DB_DNODE_ENTER(dbuf); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1211 |
dn = DB_DNODE(dbuf); |
9412
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1212 |
rw_enter(&dn->dn_struct_rwlock, RW_READER); |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1213 |
blkid = dbuf_whichblock(dn, offset); |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1214 |
VERIFY((db = dbuf_hold(dn, blkid, FTAG)) != NULL); |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1215 |
rw_exit(&dn->dn_struct_rwlock); |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1216 |
DB_DNODE_EXIT(dbuf); |
9412
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1217 |
|
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1218 |
if (offset == db->db.db_offset && blksz == db->db.db_size) { |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1219 |
dbuf_assign_arcbuf(db, buf, tx); |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1220 |
dbuf_rele(db, FTAG); |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1221 |
} else { |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1222 |
objset_t *os; |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1223 |
uint64_t object; |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1224 |
|
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1225 |
DB_DNODE_ENTER(dbuf); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1226 |
dn = DB_DNODE(dbuf); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1227 |
os = dn->dn_objset; |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1228 |
object = dn->dn_object; |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1229 |
DB_DNODE_EXIT(dbuf); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1230 |
|
9412
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1231 |
dbuf_rele(db, FTAG); |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1232 |
dmu_write(os, object, offset, blksz, buf->b_data, tx); |
9412
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1233 |
dmu_return_arcbuf(buf); |
11539
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1234 |
XUIOSTAT_BUMP(xuiostat_wbuf_copied); |
9412
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1235 |
} |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1236 |
} |
4aefd8704ce0
6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents:
9396
diff
changeset
|
1237 |
|
2237 | 1238 |
typedef struct { |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1239 |
dbuf_dirty_record_t *dsa_dr; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1240 |
dmu_sync_cb_t *dsa_done; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1241 |
zgd_t *dsa_zgd; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1242 |
dmu_tx_t *dsa_tx; |
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1243 |
} dmu_sync_arg_t; |
2237 | 1244 |
|
1245 |
/* ARGSUSED */ |
|
1246 |
static void |
|
7754
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7468
diff
changeset
|
1247 |
dmu_sync_ready(zio_t *zio, arc_buf_t *buf, void *varg) |
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7468
diff
changeset
|
1248 |
{ |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1249 |
dmu_sync_arg_t *dsa = varg; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1250 |
dmu_buf_t *db = dsa->dsa_zgd->zgd_db; |
7754
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7468
diff
changeset
|
1251 |
blkptr_t *bp = zio->io_bp; |
10800
469478b180d9
6880764 fsync on zfs is broken if writes are greater than 32kb on a hard crash and no log attached
Neil Perrin <Neil.Perrin@Sun.COM>
parents:
10474
diff
changeset
|
1252 |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1253 |
if (zio->io_error == 0) { |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1254 |
if (BP_IS_HOLE(bp)) { |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1255 |
/* |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1256 |
* A block of zeros may compress to a hole, but the |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1257 |
* block size still needs to be known for replay. |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1258 |
*/ |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1259 |
BP_SET_LSIZE(bp, db->db_size); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1260 |
} else { |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1261 |
ASSERT(BP_GET_LEVEL(bp) == 0); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1262 |
bp->blk_fill = 1; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1263 |
} |
7754
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7468
diff
changeset
|
1264 |
} |
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7468
diff
changeset
|
1265 |
} |
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7468
diff
changeset
|
1266 |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1267 |
static void |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1268 |
dmu_sync_late_arrival_ready(zio_t *zio) |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1269 |
{ |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1270 |
dmu_sync_ready(zio, NULL, zio->io_private); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1271 |
} |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1272 |
|
7754
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7468
diff
changeset
|
1273 |
/* ARGSUSED */ |
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7468
diff
changeset
|
1274 |
static void |
2237 | 1275 |
dmu_sync_done(zio_t *zio, arc_buf_t *buf, void *varg) |
1276 |
{ |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1277 |
dmu_sync_arg_t *dsa = varg; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1278 |
dbuf_dirty_record_t *dr = dsa->dsa_dr; |
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1279 |
dmu_buf_impl_t *db = dr->dr_dbuf; |
2237 | 1280 |
|
10810
b6b161a6ae4a
6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849
Neil Perrin <Neil.Perrin@Sun.COM>
parents:
10800
diff
changeset
|
1281 |
mutex_enter(&db->db_mtx); |
b6b161a6ae4a
6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849
Neil Perrin <Neil.Perrin@Sun.COM>
parents:
10800
diff
changeset
|
1282 |
ASSERT(dr->dt.dl.dr_override_state == DR_IN_DMU_SYNC); |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1283 |
if (zio->io_error == 0) { |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1284 |
dr->dt.dl.dr_overridden_by = *zio->io_bp; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1285 |
dr->dt.dl.dr_override_state = DR_OVERRIDDEN; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1286 |
dr->dt.dl.dr_copies = zio->io_prop.zp_copies; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1287 |
if (BP_IS_HOLE(&dr->dt.dl.dr_overridden_by)) |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1288 |
BP_ZERO(&dr->dt.dl.dr_overridden_by); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1289 |
} else { |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1290 |
dr->dt.dl.dr_override_state = DR_NOT_OVERRIDDEN; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1291 |
} |
2237 | 1292 |
cv_broadcast(&db->db_changed); |
10810
b6b161a6ae4a
6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849
Neil Perrin <Neil.Perrin@Sun.COM>
parents:
10800
diff
changeset
|
1293 |
mutex_exit(&db->db_mtx); |
b6b161a6ae4a
6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849
Neil Perrin <Neil.Perrin@Sun.COM>
parents:
10800
diff
changeset
|
1294 |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1295 |
dsa->dsa_done(dsa->dsa_zgd, zio->io_error); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1296 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1297 |
kmem_free(dsa, sizeof (*dsa)); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1298 |
} |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1299 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1300 |
static void |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1301 |
dmu_sync_late_arrival_done(zio_t *zio) |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1302 |
{ |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1303 |
blkptr_t *bp = zio->io_bp; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1304 |
dmu_sync_arg_t *dsa = zio->io_private; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1305 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1306 |
if (zio->io_error == 0 && !BP_IS_HOLE(bp)) { |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1307 |
ASSERT(zio->io_bp->blk_birth == zio->io_txg); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1308 |
ASSERT(zio->io_txg > spa_syncing_txg(zio->io_spa)); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1309 |
zio_free(zio->io_spa, zio->io_txg, zio->io_bp); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1310 |
} |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1311 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1312 |
dmu_tx_commit(dsa->dsa_tx); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1313 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1314 |
dsa->dsa_done(dsa->dsa_zgd, zio->io_error); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1315 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1316 |
kmem_free(dsa, sizeof (*dsa)); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1317 |
} |
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1318 |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1319 |
static int |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1320 |
dmu_sync_late_arrival(zio_t *pio, objset_t *os, dmu_sync_cb_t *done, zgd_t *zgd, |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1321 |
zio_prop_t *zp, zbookmark_t *zb) |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1322 |
{ |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1323 |
dmu_sync_arg_t *dsa; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1324 |
dmu_tx_t *tx; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1325 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1326 |
tx = dmu_tx_create(os); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1327 |
dmu_tx_hold_space(tx, zgd->zgd_db->db_size); |
11670
1d964fb5d948
6595532 ZIL is too talkative
Neil Perrin <Neil.Perrin@Sun.COM>
parents:
11539
diff
changeset
|
1328 |
if (dmu_tx_assign(tx, TXG_WAIT) != 0) { |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1329 |
dmu_tx_abort(tx); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1330 |
return (EIO); /* Make zl_get_data do txg_waited_synced() */ |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1331 |
} |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1332 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1333 |
dsa = kmem_alloc(sizeof (dmu_sync_arg_t), KM_SLEEP); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1334 |
dsa->dsa_dr = NULL; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1335 |
dsa->dsa_done = done; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1336 |
dsa->dsa_zgd = zgd; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1337 |
dsa->dsa_tx = tx; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1338 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1339 |
zio_nowait(zio_write(pio, os->os_spa, dmu_tx_get_txg(tx), zgd->zgd_bp, |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1340 |
zgd->zgd_db->db_data, zgd->zgd_db->db_size, zp, |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1341 |
dmu_sync_late_arrival_ready, dmu_sync_late_arrival_done, dsa, |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1342 |
ZIO_PRIORITY_SYNC_WRITE, ZIO_FLAG_CANFAIL, zb)); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1343 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1344 |
return (0); |
2237 | 1345 |
} |
1346 |
||
789 | 1347 |
/* |
2237 | 1348 |
* Intent log support: sync the block associated with db to disk. |
1349 |
* N.B. and XXX: the caller is responsible for making sure that the |
|
1350 |
* data isn't changing while dmu_sync() is writing it. |
|
789 | 1351 |
* |
1352 |
* Return values: |
|
1353 |
* |
|
2237 | 1354 |
* EEXIST: this txg has already been synced, so there's nothing to to. |
789 | 1355 |
* The caller should not log the write. |
1356 |
* |
|
1357 |
* ENOENT: the block was dbuf_free_range()'d, so there's nothing to do. |
|
1358 |
* The caller should not log the write. |
|
1359 |
* |
|
2237 | 1360 |
* EALREADY: this block is already in the process of being synced. |
1361 |
* The caller should track its progress (somehow). |
|
789 | 1362 |
* |
10922
e2081f502306
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Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1363 |
* EIO: could not do the I/O. |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1364 |
* The caller should do a txg_wait_synced(). |
789 | 1365 |
* |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1366 |
* 0: the I/O has been initiated. |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1367 |
* The caller should log this blkptr in the done callback. |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1368 |
* It is possible that the I/O will fail, in which case |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1369 |
* the error will be reported to the done callback and |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1370 |
* propagated to pio from zio_done(). |
789 | 1371 |
*/ |
1372 |
int |
|
10922
e2081f502306
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Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1373 |
dmu_sync(zio_t *pio, uint64_t txg, dmu_sync_cb_t *done, zgd_t *zgd) |
789 | 1374 |
{ |
10922
e2081f502306
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Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1375 |
blkptr_t *bp = zgd->zgd_bp; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1376 |
dmu_buf_impl_t *db = (dmu_buf_impl_t *)zgd->zgd_db; |
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10242
diff
changeset
|
1377 |
objset_t *os = db->db_objset; |
10922
e2081f502306
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Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1378 |
dsl_dataset_t *ds = os->os_dsl_dataset; |
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1379 |
dbuf_dirty_record_t *dr; |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1380 |
dmu_sync_arg_t *dsa; |
2237 | 1381 |
zbookmark_t zb; |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1382 |
zio_prop_t zp; |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1383 |
dnode_t *dn; |
789 | 1384 |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1385 |
ASSERT(pio != NULL); |
789 | 1386 |
ASSERT(BP_IS_HOLE(bp)); |
1387 |
ASSERT(txg != 0); |
|
1388 |
||
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1389 |
SET_BOOKMARK(&zb, ds->ds_object, |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1390 |
db->db.db_object, db->db_level, db->db_blkid); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1391 |
|
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1392 |
DB_DNODE_ENTER(db); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1393 |
dn = DB_DNODE(db); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1394 |
dmu_write_policy(os, dn, db->db_level, WP_DMU_SYNC, &zp); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1395 |
DB_DNODE_EXIT(db); |
789 | 1396 |
|
1397 |
/* |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1398 |
* If we're frozen (running ziltest), we always need to generate a bp. |
1544 | 1399 |
*/ |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1400 |
if (txg > spa_freeze_txg(os->os_spa)) |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1401 |
return (dmu_sync_late_arrival(pio, os, done, zgd, &zp, &zb)); |
1544 | 1402 |
|
1403 |
/* |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1404 |
* Grabbing db_mtx now provides a barrier between dbuf_sync_leaf() |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1405 |
* and us. If we determine that this txg is not yet syncing, |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1406 |
* but it begins to sync a moment later, that's OK because the |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1407 |
* sync thread will block in dbuf_sync_leaf() until we drop db_mtx. |
789 | 1408 |
*/ |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1409 |
mutex_enter(&db->db_mtx); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1410 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1411 |
if (txg <= spa_last_synced_txg(os->os_spa)) { |
789 | 1412 |
/* |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1413 |
* This txg has already synced. There's nothing to do. |
789 | 1414 |
*/ |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1415 |
mutex_exit(&db->db_mtx); |
2237 | 1416 |
return (EEXIST); |
789 | 1417 |
} |
1418 |
||
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1419 |
if (txg <= spa_syncing_txg(os->os_spa)) { |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1420 |
/* |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1421 |
* This txg is currently syncing, so we can't mess with |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1422 |
* the dirty record anymore; just write a new log block. |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1423 |
*/ |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1424 |
mutex_exit(&db->db_mtx); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1425 |
return (dmu_sync_late_arrival(pio, os, done, zgd, &zp, &zb)); |
2237 | 1426 |
} |
1427 |
||
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1428 |
dr = db->db_last_dirty; |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1429 |
while (dr && dr->dr_txg != txg) |
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1430 |
dr = dr->dr_next; |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1431 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1432 |
if (dr == NULL) { |
2237 | 1433 |
/* |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1434 |
* There's no dr for this dbuf, so it must have been freed. |
2237 | 1435 |
* There's no need to log writes to freed blocks, so we're done. |
1436 |
*/ |
|
1437 |
mutex_exit(&db->db_mtx); |
|
789 | 1438 |
return (ENOENT); |
1439 |
} |
|
1440 |
||
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1441 |
ASSERT(dr->dr_txg == txg); |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1442 |
if (dr->dt.dl.dr_override_state == DR_IN_DMU_SYNC || |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1443 |
dr->dt.dl.dr_override_state == DR_OVERRIDDEN) { |
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1444 |
/* |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1445 |
* We have already issued a sync write for this buffer, |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1446 |
* or this buffer has already been synced. It could not |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1447 |
* have been dirtied since, or we would have cleared the state. |
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1448 |
*/ |
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1449 |
mutex_exit(&db->db_mtx); |
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1450 |
return (EALREADY); |
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1451 |
} |
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1452 |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1453 |
ASSERT(dr->dt.dl.dr_override_state == DR_NOT_OVERRIDDEN); |
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1454 |
dr->dt.dl.dr_override_state = DR_IN_DMU_SYNC; |
2237 | 1455 |
mutex_exit(&db->db_mtx); |
7754
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7468
diff
changeset
|
1456 |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1457 |
dsa = kmem_alloc(sizeof (dmu_sync_arg_t), KM_SLEEP); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1458 |
dsa->dsa_dr = dr; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1459 |
dsa->dsa_done = done; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1460 |
dsa->dsa_zgd = zgd; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1461 |
dsa->dsa_tx = NULL; |
7754
b80e4842ad54
6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
7468
diff
changeset
|
1462 |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1463 |
zio_nowait(arc_write(pio, os->os_spa, txg, |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1464 |
bp, dr->dt.dl.dr_data, DBUF_IS_L2CACHEABLE(db), &zp, |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1465 |
dmu_sync_ready, dmu_sync_done, dsa, |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1466 |
ZIO_PRIORITY_SYNC_WRITE, ZIO_FLAG_CANFAIL, &zb)); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1467 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1468 |
return (0); |
789 | 1469 |
} |
1470 |
||
1471 |
int |
|
1472 |
dmu_object_set_blocksize(objset_t *os, uint64_t object, uint64_t size, int ibs, |
|
1473 |
dmu_tx_t *tx) |
|
1474 |
{ |
|
1544 | 1475 |
dnode_t *dn; |
1476 |
int err; |
|
1477 |
||
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10242
diff
changeset
|
1478 |
err = dnode_hold(os, object, FTAG, &dn); |
1544 | 1479 |
if (err) |
1480 |
return (err); |
|
1481 |
err = dnode_set_blksz(dn, size, ibs, tx); |
|
789 | 1482 |
dnode_rele(dn, FTAG); |
1483 |
return (err); |
|
1484 |
} |
|
1485 |
||
1486 |
void |
|
1487 |
dmu_object_set_checksum(objset_t *os, uint64_t object, uint8_t checksum, |
|
1488 |
dmu_tx_t *tx) |
|
1489 |
{ |
|
1544 | 1490 |
dnode_t *dn; |
1491 |
||
1492 |
/* XXX assumes dnode_hold will not get an i/o error */ |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10242
diff
changeset
|
1493 |
(void) dnode_hold(os, object, FTAG, &dn); |
789 | 1494 |
ASSERT(checksum < ZIO_CHECKSUM_FUNCTIONS); |
1495 |
dn->dn_checksum = checksum; |
|
1496 |
dnode_setdirty(dn, tx); |
|
1497 |
dnode_rele(dn, FTAG); |
|
1498 |
} |
|
1499 |
||
1500 |
void |
|
1501 |
dmu_object_set_compress(objset_t *os, uint64_t object, uint8_t compress, |
|
1502 |
dmu_tx_t *tx) |
|
1503 |
{ |
|
1544 | 1504 |
dnode_t *dn; |
1505 |
||
1506 |
/* XXX assumes dnode_hold will not get an i/o error */ |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10242
diff
changeset
|
1507 |
(void) dnode_hold(os, object, FTAG, &dn); |
789 | 1508 |
ASSERT(compress < ZIO_COMPRESS_FUNCTIONS); |
1509 |
dn->dn_compress = compress; |
|
1510 |
dnode_setdirty(dn, tx); |
|
1511 |
dnode_rele(dn, FTAG); |
|
1512 |
} |
|
1513 |
||
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1514 |
int zfs_mdcomp_disable = 0; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1515 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1516 |
void |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1517 |
dmu_write_policy(objset_t *os, dnode_t *dn, int level, int wp, zio_prop_t *zp) |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1518 |
{ |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1519 |
dmu_object_type_t type = dn ? dn->dn_type : DMU_OT_OBJSET; |
13700
2889e2596bd6
2619 asynchronous destruction of ZFS file systems
Christopher Siden <chris.siden@delphix.com>
parents:
12684
diff
changeset
|
1520 |
boolean_t ismd = (level > 0 || DMU_OT_IS_METADATA(type) || |
12493
89ce40422cea
6952177 SA handling of on-disk corruption can be improved
Mark Shellenbaum <Mark.Shellenbaum@Oracle.COM>
parents:
12470
diff
changeset
|
1521 |
(wp & WP_SPILL)); |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1522 |
enum zio_checksum checksum = os->os_checksum; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1523 |
enum zio_compress compress = os->os_compress; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1524 |
enum zio_checksum dedup_checksum = os->os_dedup_checksum; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1525 |
boolean_t dedup; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1526 |
boolean_t dedup_verify = os->os_dedup_verify; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1527 |
int copies = os->os_copies; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1528 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1529 |
/* |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1530 |
* Determine checksum setting. |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1531 |
*/ |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1532 |
if (ismd) { |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1533 |
/* |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1534 |
* Metadata always gets checksummed. If the data |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1535 |
* checksum is multi-bit correctable, and it's not a |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1536 |
* ZBT-style checksum, then it's suitable for metadata |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1537 |
* as well. Otherwise, the metadata checksum defaults |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1538 |
* to fletcher4. |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1539 |
*/ |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1540 |
if (zio_checksum_table[checksum].ci_correctable < 1 || |
11670
1d964fb5d948
6595532 ZIL is too talkative
Neil Perrin <Neil.Perrin@Sun.COM>
parents:
11539
diff
changeset
|
1541 |
zio_checksum_table[checksum].ci_eck) |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1542 |
checksum = ZIO_CHECKSUM_FLETCHER_4; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1543 |
} else { |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1544 |
checksum = zio_checksum_select(dn->dn_checksum, checksum); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1545 |
} |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1546 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1547 |
/* |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1548 |
* Determine compression setting. |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1549 |
*/ |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1550 |
if (ismd) { |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1551 |
/* |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1552 |
* XXX -- we should design a compression algorithm |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1553 |
* that specializes in arrays of bps. |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1554 |
*/ |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1555 |
compress = zfs_mdcomp_disable ? ZIO_COMPRESS_EMPTY : |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1556 |
ZIO_COMPRESS_LZJB; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1557 |
} else { |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1558 |
compress = zio_compress_select(dn->dn_compress, compress); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1559 |
} |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1560 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1561 |
/* |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1562 |
* Determine dedup setting. If we are in dmu_sync(), we won't |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1563 |
* actually dedup now because that's all done in syncing context; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1564 |
* but we do want to use the dedup checkum. If the checksum is not |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1565 |
* strong enough to ensure unique signatures, force dedup_verify. |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1566 |
*/ |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1567 |
dedup = (!ismd && dedup_checksum != ZIO_CHECKSUM_OFF); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1568 |
if (dedup) { |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1569 |
checksum = dedup_checksum; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1570 |
if (!zio_checksum_table[checksum].ci_dedup) |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1571 |
dedup_verify = 1; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1572 |
} |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1573 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1574 |
if (wp & WP_DMU_SYNC) |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1575 |
dedup = 0; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1576 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1577 |
if (wp & WP_NOFILL) { |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1578 |
ASSERT(!ismd && level == 0); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1579 |
checksum = ZIO_CHECKSUM_OFF; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1580 |
compress = ZIO_COMPRESS_OFF; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1581 |
dedup = B_FALSE; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1582 |
} |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1583 |
|
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1584 |
zp->zp_checksum = checksum; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1585 |
zp->zp_compress = compress; |
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
11670
diff
changeset
|
1586 |
zp->zp_type = (wp & WP_SPILL) ? dn->dn_bonustype : type; |
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1587 |
zp->zp_level = level; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1588 |
zp->zp_copies = MIN(copies + ismd, spa_max_replication(os->os_spa)); |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1589 |
zp->zp_dedup = dedup; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1590 |
zp->zp_dedup_verify = dedup && dedup_verify; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1591 |
} |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1592 |
|
1775
e51e26b432c0
6410698 ZFS metadata needs to be more highly replicated (ditto blocks)
billm
parents:
1731
diff
changeset
|
1593 |
int |
789 | 1594 |
dmu_offset_next(objset_t *os, uint64_t object, boolean_t hole, uint64_t *off) |
1595 |
{ |
|
1596 |
dnode_t *dn; |
|
1597 |
int i, err; |
|
1598 |
||
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10242
diff
changeset
|
1599 |
err = dnode_hold(os, object, FTAG, &dn); |
1544 | 1600 |
if (err) |
1601 |
return (err); |
|
789 | 1602 |
/* |
1603 |
* Sync any current changes before |
|
1604 |
* we go trundling through the block pointers. |
|
1605 |
*/ |
|
1606 |
for (i = 0; i < TXG_SIZE; i++) { |
|
1596
2e2377ccbf85
6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents:
1544
diff
changeset
|
1607 |
if (list_link_active(&dn->dn_dirty_link[i])) |
789 | 1608 |
break; |
1609 |
} |
|
1610 |
if (i != TXG_SIZE) { |
|
1611 |
dnode_rele(dn, FTAG); |
|
1612 |
txg_wait_synced(dmu_objset_pool(os), 0); |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10242
diff
changeset
|
1613 |
err = dnode_hold(os, object, FTAG, &dn); |
1544 | 1614 |
if (err) |
1615 |
return (err); |
|
789 | 1616 |
} |
1617 |
||
6992 | 1618 |
err = dnode_next_offset(dn, (hole ? DNODE_FIND_HOLE : 0), off, 1, 1, 0); |
789 | 1619 |
dnode_rele(dn, FTAG); |
1620 |
||
1621 |
return (err); |
|
1622 |
} |
|
1623 |
||
1624 |
void |
|
1625 |
dmu_object_info_from_dnode(dnode_t *dn, dmu_object_info_t *doi) |
|
1626 |
{ |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1627 |
dnode_phys_t *dnp; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1628 |
|
789 | 1629 |
rw_enter(&dn->dn_struct_rwlock, RW_READER); |
1630 |
mutex_enter(&dn->dn_mtx); |
|
1631 |
||
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1632 |
dnp = dn->dn_phys; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1633 |
|
789 | 1634 |
doi->doi_data_block_size = dn->dn_datablksz; |
1635 |
doi->doi_metadata_block_size = dn->dn_indblkshift ? |
|
1636 |
1ULL << dn->dn_indblkshift : 0; |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1637 |
doi->doi_type = dn->dn_type; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1638 |
doi->doi_bonus_type = dn->dn_bonustype; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1639 |
doi->doi_bonus_size = dn->dn_bonuslen; |
789 | 1640 |
doi->doi_indirection = dn->dn_nlevels; |
1641 |
doi->doi_checksum = dn->dn_checksum; |
|
1642 |
doi->doi_compress = dn->dn_compress; |
|
10922
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1643 |
doi->doi_physical_blocks_512 = (DN_USED_BYTES(dnp) + 256) >> 9; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1644 |
doi->doi_max_offset = (dnp->dn_maxblkid + 1) * dn->dn_datablksz; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1645 |
doi->doi_fill_count = 0; |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1646 |
for (int i = 0; i < dnp->dn_nblkptr; i++) |
e2081f502306
PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents:
10810
diff
changeset
|
1647 |
doi->doi_fill_count += dnp->dn_blkptr[i].blk_fill; |
789 | 1648 |
|
1649 |
mutex_exit(&dn->dn_mtx); |
|
1650 |
rw_exit(&dn->dn_struct_rwlock); |
|
1651 |
} |
|
1652 |
||
1653 |
/* |
|
1654 |
* Get information on a DMU object. |
|
1655 |
* If doi is NULL, just indicates whether the object exists. |
|
1656 |
*/ |
|
1657 |
int |
|
1658 |
dmu_object_info(objset_t *os, uint64_t object, dmu_object_info_t *doi) |
|
1659 |
{ |
|
1544 | 1660 |
dnode_t *dn; |
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10242
diff
changeset
|
1661 |
int err = dnode_hold(os, object, FTAG, &dn); |
789 | 1662 |
|
1544 | 1663 |
if (err) |
1664 |
return (err); |
|
789 | 1665 |
|
1666 |
if (doi != NULL) |
|
1667 |
dmu_object_info_from_dnode(dn, doi); |
|
1668 |
||
1669 |
dnode_rele(dn, FTAG); |
|
1670 |
return (0); |
|
1671 |
} |
|
1672 |
||
1673 |
/* |
|
1674 |
* As above, but faster; can be used when you have a held dbuf in hand. |
|
1675 |
*/ |
|
1676 |
void |
|
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1677 |
dmu_object_info_from_db(dmu_buf_t *db_fake, dmu_object_info_t *doi) |
789 | 1678 |
{ |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1679 |
dmu_buf_impl_t *db = (dmu_buf_impl_t *)db_fake; |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1680 |
|
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1681 |
DB_DNODE_ENTER(db); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1682 |
dmu_object_info_from_dnode(DB_DNODE(db), doi); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1683 |
DB_DNODE_EXIT(db); |
789 | 1684 |
} |
1685 |
||
1686 |
/* |
|
1687 |
* Faster still when you only care about the size. |
|
1688 |
* This is specifically optimized for zfs_getattr(). |
|
1689 |
*/ |
|
1690 |
void |
|
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1691 |
dmu_object_size_from_db(dmu_buf_t *db_fake, uint32_t *blksize, |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1692 |
u_longlong_t *nblk512) |
789 | 1693 |
{ |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1694 |
dmu_buf_impl_t *db = (dmu_buf_impl_t *)db_fake; |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1695 |
dnode_t *dn; |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1696 |
|
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1697 |
DB_DNODE_ENTER(db); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1698 |
dn = DB_DNODE(db); |
789 | 1699 |
|
1700 |
*blksize = dn->dn_datablksz; |
|
2082 | 1701 |
/* add 1 for dnode space */ |
1702 |
*nblk512 = ((DN_USED_BYTES(dn->dn_phys) + SPA_MINBLOCKSIZE/2) >> |
|
1703 |
SPA_MINBLOCKSHIFT) + 1; |
|
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1704 |
DB_DNODE_EXIT(db); |
789 | 1705 |
} |
1706 |
||
1707 |
void |
|
1708 |
byteswap_uint64_array(void *vbuf, size_t size) |
|
1709 |
{ |
|
1710 |
uint64_t *buf = vbuf; |
|
1711 |
size_t count = size >> 3; |
|
1712 |
int i; |
|
1713 |
||
1714 |
ASSERT((size & 7) == 0); |
|
1715 |
||
1716 |
for (i = 0; i < count; i++) |
|
1717 |
buf[i] = BSWAP_64(buf[i]); |
|
1718 |
} |
|
1719 |
||
1720 |
void |
|
1721 |
byteswap_uint32_array(void *vbuf, size_t size) |
|
1722 |
{ |
|
1723 |
uint32_t *buf = vbuf; |
|
1724 |
size_t count = size >> 2; |
|
1725 |
int i; |
|
1726 |
||
1727 |
ASSERT((size & 3) == 0); |
|
1728 |
||
1729 |
for (i = 0; i < count; i++) |
|
1730 |
buf[i] = BSWAP_32(buf[i]); |
|
1731 |
} |
|
1732 |
||
1733 |
void |
|
1734 |
byteswap_uint16_array(void *vbuf, size_t size) |
|
1735 |
{ |
|
1736 |
uint16_t *buf = vbuf; |
|
1737 |
size_t count = size >> 1; |
|
1738 |
int i; |
|
1739 |
||
1740 |
ASSERT((size & 1) == 0); |
|
1741 |
||
1742 |
for (i = 0; i < count; i++) |
|
1743 |
buf[i] = BSWAP_16(buf[i]); |
|
1744 |
} |
|
1745 |
||
1746 |
/* ARGSUSED */ |
|
1747 |
void |
|
1748 |
byteswap_uint8_array(void *vbuf, size_t size) |
|
1749 |
{ |
|
1750 |
} |
|
1751 |
||
1752 |
void |
|
1753 |
dmu_init(void) |
|
1754 |
{ |
|
12296
7cf402a7f374
6675946 'zpool status' should show the progress of resilvering for individual disk.
Lin Ling <Lin.Ling@Sun.COM>
parents:
12285
diff
changeset
|
1755 |
zfs_dbgmsg_init(); |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1756 |
sa_cache_init(); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1757 |
xuio_stat_init(); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1758 |
dmu_objset_init(); |
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1759 |
dnode_init(); |
789 | 1760 |
dbuf_init(); |
10474
0e96dd3b905a
6859997 zfs caching performance problem
Rich Morris <Richard.Morris@Sun.COM>
parents:
10298
diff
changeset
|
1761 |
zfetch_init(); |
13776
cd512c80fd75
3086 unnecessarily setting DS_FLAG_INCONSISTENT on async destroyed datasets
Matthew Ahrens <mahrens@delphix.com>
parents:
13700
diff
changeset
|
1762 |
l2arc_init(); |
789 | 1763 |
arc_init(); |
1764 |
} |
|
1765 |
||
1766 |
void |
|
1767 |
dmu_fini(void) |
|
1768 |
{ |
|
13776
cd512c80fd75
3086 unnecessarily setting DS_FLAG_INCONSISTENT on async destroyed datasets
Matthew Ahrens <mahrens@delphix.com>
parents:
13700
diff
changeset
|
1769 |
arc_fini(); |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1770 |
l2arc_fini(); |
10474
0e96dd3b905a
6859997 zfs caching performance problem
Rich Morris <Richard.Morris@Sun.COM>
parents:
10298
diff
changeset
|
1771 |
zfetch_fini(); |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1772 |
dbuf_fini(); |
789 | 1773 |
dnode_fini(); |
12684
397e44ebb8a9
6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents:
12493
diff
changeset
|
1774 |
dmu_objset_fini(); |
11539
10d35fc3d7fd
6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents:
10922
diff
changeset
|
1775 |
xuio_stat_fini(); |
11935
538c866aaac6
6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents:
11670
diff
changeset
|
1776 |
sa_cache_fini(); |
12296
7cf402a7f374
6675946 'zpool status' should show the progress of resilvering for individual disk.
Lin Ling <Lin.Ling@Sun.COM>
parents:
12285
diff
changeset
|
1777 |
zfs_dbgmsg_fini(); |
789 | 1778 |
} |