/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <mdb/mdb_ctf.h>
#include <sys/zfs_context.h>
#include <sys/mdb_modapi.h>
#include <sys/dbuf.h>
#include <sys/dmu_objset.h>
#include <sys/dsl_dir.h>
#include <sys/dsl_pool.h>
#include <sys/metaslab_impl.h>
#include <sys/space_map.h>
#include <sys/list.h>
#include <sys/spa_impl.h>
#include <sys/vdev_impl.h>
#include <sys/zio_compress.h>
#ifndef _KERNEL
#include "../genunix/list.h"
#endif
#ifdef _KERNEL
#define ZFS_OBJ_NAME "zfs"
#else
#define ZFS_OBJ_NAME "libzpool.so.1"
#endif
static char *
local_strdup(const char *s)
{
char *s1 = mdb_alloc(strlen(s) + 1, UM_SLEEP);
(void) strcpy(s1, s);
return (s1);
}
static int
getmember(uintptr_t addr, const char *type, mdb_ctf_id_t *idp,
const char *member, int len, void *buf)
{
mdb_ctf_id_t id;
ulong_t off;
char name[64];
if (idp == NULL) {
if (mdb_ctf_lookup_by_name(type, &id) == -1) {
mdb_warn("couldn't find type %s", type);
return (DCMD_ERR);
}
idp = &id;
} else {
type = name;
mdb_ctf_type_name(*idp, name, sizeof (name));
}
if (mdb_ctf_offsetof(*idp, member, &off) == -1) {
mdb_warn("couldn't find member %s of type %s\n", member, type);
return (DCMD_ERR);
}
if (off % 8 != 0) {
mdb_warn("member %s of type %s is unsupported bitfield",
member, type);
return (DCMD_ERR);
}
off /= 8;
if (mdb_vread(buf, len, addr + off) == -1) {
mdb_warn("failed to read %s from %s at %p",
member, type, addr + off);
return (DCMD_ERR);
}
/* mdb_warn("read %s from %s at %p+%llx\n", member, type, addr, off); */
return (0);
}
#define GETMEMB(addr, type, member, dest) \
getmember(addr, #type, NULL, #member, sizeof (dest), &(dest))
#define GETMEMBID(addr, ctfid, member, dest) \
getmember(addr, NULL, ctfid, #member, sizeof (dest), &(dest))
static int
getrefcount(uintptr_t addr, mdb_ctf_id_t *id,
const char *member, uint64_t *rc)
{
static int gotid;
static mdb_ctf_id_t rc_id;
ulong_t off;
if (!gotid) {
if (mdb_ctf_lookup_by_name("struct refcount", &rc_id) == -1) {
mdb_warn("couldn't find struct refcount");
return (DCMD_ERR);
}
gotid = TRUE;
}
if (mdb_ctf_offsetof(*id, member, &off) == -1) {
char name[64];
mdb_ctf_type_name(*id, name, sizeof (name));
mdb_warn("couldn't find member %s of type %s\n", member, name);
return (DCMD_ERR);
}
off /= 8;
return (GETMEMBID(addr + off, &rc_id, rc_count, *rc));
}
static int
read_symbol(char *sym_name, void **bufp)
{
GElf_Sym sym;
if (mdb_lookup_by_obj(MDB_TGT_OBJ_EVERY, sym_name, &sym)) {
mdb_warn("can't find symbol %s", sym_name);
return (DCMD_ERR);
}
*bufp = mdb_alloc(sym.st_size, UM_SLEEP);
if (mdb_vread(*bufp, sym.st_size, sym.st_value) == -1) {
mdb_warn("can't read data for symbol %s", sym_name);
mdb_free(*bufp, sym.st_size);
return (DCMD_ERR);
}
return (DCMD_OK);
}
static int verbose;
static int
freelist_walk_init(mdb_walk_state_t *wsp)
{
if (wsp->walk_addr == NULL) {
mdb_warn("must supply starting address\n");
return (WALK_ERR);
}
wsp->walk_data = 0; /* Index into the freelist */
return (WALK_NEXT);
}
static int
freelist_walk_step(mdb_walk_state_t *wsp)
{
uint64_t entry;
uintptr_t number = (uintptr_t)wsp->walk_data;
char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID" };
int mapshift = SPA_MINBLOCKSHIFT;
if (mdb_vread(&entry, sizeof (entry), wsp->walk_addr) == -1) {
mdb_warn("failed to read freelist entry %p", wsp->walk_addr);
return (WALK_DONE);
}
wsp->walk_addr += sizeof (entry);
wsp->walk_data = (void *)(number + 1);
if (SM_DEBUG_DECODE(entry)) {
mdb_printf("DEBUG: %3u %10s: txg=%llu pass=%llu\n",
number,
ddata[SM_DEBUG_ACTION_DECODE(entry)],
SM_DEBUG_TXG_DECODE(entry),
SM_DEBUG_SYNCPASS_DECODE(entry));
} else {
mdb_printf("Entry: %3u offsets=%08llx-%08llx type=%c "
"size=%06llx", number,
SM_OFFSET_DECODE(entry) << mapshift,
(SM_OFFSET_DECODE(entry) + SM_RUN_DECODE(entry)) <<
mapshift,
SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
SM_RUN_DECODE(entry) << mapshift);
if (verbose)
mdb_printf(" (raw=%012llx)\n", entry);
mdb_printf("\n");
}
return (WALK_NEXT);
}
static int
dataset_name(uintptr_t addr, char *buf)
{
static int gotid;
static mdb_ctf_id_t dd_id;
uintptr_t dd_parent;
char dd_myname[MAXNAMELEN];
if (!gotid) {
if (mdb_ctf_lookup_by_name("struct dsl_dir",
&dd_id) == -1) {
mdb_warn("couldn't find struct dsl_dir");
return (DCMD_ERR);
}
gotid = TRUE;
}
if (GETMEMBID(addr, &dd_id, dd_parent, dd_parent) ||
GETMEMBID(addr, &dd_id, dd_myname, dd_myname)) {
return (DCMD_ERR);
}
if (dd_parent) {
if (dataset_name(dd_parent, buf))
return (DCMD_ERR);
strcat(buf, "/");
}
if (dd_myname[0])
strcat(buf, dd_myname);
else
strcat(buf, "???");
return (0);
}
static int
objset_name(uintptr_t addr, char *buf)
{
static int gotid;
static mdb_ctf_id_t osi_id, ds_id;
uintptr_t os_dsl_dataset;
char ds_snapname[MAXNAMELEN];
uintptr_t ds_dir;
buf[0] = '\0';
if (!gotid) {
if (mdb_ctf_lookup_by_name("struct objset_impl",
&osi_id) == -1) {
mdb_warn("couldn't find struct objset_impl");
return (DCMD_ERR);
}
if (mdb_ctf_lookup_by_name("struct dsl_dataset",
&ds_id) == -1) {
mdb_warn("couldn't find struct dsl_dataset");
return (DCMD_ERR);
}
gotid = TRUE;
}
if (GETMEMBID(addr, &osi_id, os_dsl_dataset, os_dsl_dataset))
return (DCMD_ERR);
if (os_dsl_dataset == 0) {
strcat(buf, "mos");
return (0);
}
if (GETMEMBID(os_dsl_dataset, &ds_id, ds_snapname, ds_snapname) ||
GETMEMBID(os_dsl_dataset, &ds_id, ds_dir, ds_dir)) {
return (DCMD_ERR);
}
if (ds_dir && dataset_name(ds_dir, buf))
return (DCMD_ERR);
if (ds_snapname[0]) {
strcat(buf, "@");
strcat(buf, ds_snapname);
}
return (0);
}
static void
enum_lookup(char *out, size_t size, mdb_ctf_id_t id, int val,
const char *prefix)
{
const char *cp;
size_t len = strlen(prefix);
if ((cp = mdb_ctf_enum_name(id, val)) != NULL) {
if (strncmp(cp, prefix, len) == 0)
cp += len;
(void) strncpy(out, cp, size);
} else {
mdb_snprintf(out, size, "? (%d)", val);
}
}
/* ARGSUSED */
static int
zio_pipeline(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
mdb_ctf_id_t pipe_enum;
int i;
char stage[1024];
if (mdb_ctf_lookup_by_name("enum zio_stage", &pipe_enum) == -1) {
mdb_warn("Could not find enum zio_stage");
return (DCMD_ERR);
}
for (i = 0; i < 32; i++) {
if (addr & (1U << i)) {
enum_lookup(stage, sizeof (stage), pipe_enum, i,
"ZIO_STAGE_");
mdb_printf(" %s\n", stage);
}
}
return (DCMD_OK);
}
/* ARGSUSED */
static int
blkptr(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
blkptr_t bp;
dmu_object_type_info_t *doti;
zio_compress_info_t *zct;
zio_checksum_info_t *zci;
int i;
char buf[MAXPATHLEN];
if (mdb_vread(&bp, sizeof (blkptr_t), addr) == -1) {
mdb_warn("failed to read blkptr_t");
return (DCMD_ERR);
}
if (read_symbol("dmu_ot", (void **)&doti) != DCMD_OK)
return (DCMD_ERR);
for (i = 0; i < DMU_OT_NUMTYPES; i++) {
mdb_readstr(buf, sizeof (buf), (uintptr_t)doti[i].ot_name);
doti[i].ot_name = local_strdup(buf);
}
if (read_symbol("zio_checksum_table", (void **)&zci) != DCMD_OK)
return (DCMD_ERR);
for (i = 0; i < ZIO_CHECKSUM_FUNCTIONS; i++) {
mdb_readstr(buf, sizeof (buf), (uintptr_t)zci[i].ci_name);
zci[i].ci_name = local_strdup(buf);
}
if (read_symbol("zio_compress_table", (void **)&zct) != DCMD_OK)
return (DCMD_ERR);
for (i = 0; i < ZIO_COMPRESS_FUNCTIONS; i++) {
mdb_readstr(buf, sizeof (buf), (uintptr_t)zct[i].ci_name);
zct[i].ci_name = local_strdup(buf);
}
/*
* Super-ick warning: This code is also duplicated in
* cmd/zdb.c . Yeah, I hate code replication, too.
*/
for (i = 0; i < BP_GET_NDVAS(&bp); i++) {
dva_t *dva = &bp.blk_dva[i];
mdb_printf("DVA[%d]: vdev_id %lld / %llx\n", i,
DVA_GET_VDEV(dva), DVA_GET_OFFSET(dva));
mdb_printf("DVA[%d]: GANG: %-5s GRID: %04x\t"
"ASIZE: %llx\n", i, DVA_GET_GANG(dva) ? "TRUE" : "FALSE",
DVA_GET_GRID(dva), DVA_GET_ASIZE(dva));
mdb_printf("DVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", i,
DVA_GET_VDEV(dva), DVA_GET_OFFSET(dva), BP_GET_PSIZE(&bp),
BP_SHOULD_BYTESWAP(&bp) ? "e" : "",
!DVA_GET_GANG(dva) && BP_GET_LEVEL(&bp) != 0 ? "i" : "",
DVA_GET_GANG(dva) ? "g" : "",
BP_GET_COMPRESS(&bp) != 0 ? "d" : "");
}
mdb_printf("LSIZE: %-16llx\t\tPSIZE: %llx\n",
BP_GET_LSIZE(&bp), BP_GET_PSIZE(&bp));
mdb_printf("ENDIAN: %6s\t\t\t\t\tTYPE: %s\n",
BP_GET_BYTEORDER(&bp) ? "LITTLE" : "BIG",
doti[BP_GET_TYPE(&bp)].ot_name);
mdb_printf("BIRTH: %-16llx LEVEL: %-2d\tFILL: %llx\n",
bp.blk_birth, BP_GET_LEVEL(&bp), bp.blk_fill);
mdb_printf("CKFUNC: %-16s\t\tCOMP: %s\n",
zci[BP_GET_CHECKSUM(&bp)].ci_name,
zct[BP_GET_COMPRESS(&bp)].ci_name);
mdb_printf("CKSUM: %llx:%llx:%llx:%llx\n",
bp.blk_cksum.zc_word[0],
bp.blk_cksum.zc_word[1],
bp.blk_cksum.zc_word[2],
bp.blk_cksum.zc_word[3]);
return (DCMD_OK);
}
/* ARGSUSED */
static int
dbuf(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
mdb_ctf_id_t id;
dmu_buf_t db;
uintptr_t objset;
uint8_t level;
uint64_t blkid;
uint64_t holds;
char objectname[32];
char blkidname[32];
char path[MAXNAMELEN];
if (DCMD_HDRSPEC(flags)) {
mdb_printf(" addr object lvl blkid holds os\n");
}
if (mdb_ctf_lookup_by_name("struct dmu_buf_impl", &id) == -1) {
mdb_warn("couldn't find struct dmu_buf_impl_t");
return (DCMD_ERR);
}
if (GETMEMBID(addr, &id, db_objset, objset) ||
GETMEMBID(addr, &id, db, db) ||
GETMEMBID(addr, &id, db_level, level) ||
GETMEMBID(addr, &id, db_blkid, blkid)) {
return (WALK_ERR);
}
if (getrefcount(addr, &id, "db_holds", &holds)) {
return (WALK_ERR);
}
if (db.db_object == DMU_META_DNODE_OBJECT)
(void) strcpy(objectname, "mdn");
else
(void) mdb_snprintf(objectname, sizeof (objectname), "%llx",
(u_longlong_t)db.db_object);
if (blkid == DB_BONUS_BLKID)
(void) strcpy(blkidname, "bonus");
else
(void) mdb_snprintf(blkidname, sizeof (blkidname), "%llx",
(u_longlong_t)blkid);
if (objset_name(objset, path)) {
return (WALK_ERR);
}
mdb_printf("%p %8s %1u %9s %2llu %s\n",
addr, objectname, level, blkidname, holds, path);
return (DCMD_OK);
}
/* ARGSUSED */
static int
dbuf_stats(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
#define HISTOSZ 32
uintptr_t dbp;
dmu_buf_impl_t db;
dbuf_hash_table_t ht;
uint64_t bucket, ndbufs;
uint64_t histo[HISTOSZ];
uint64_t histo2[HISTOSZ];
int i, maxidx;
if (mdb_readvar(&ht, "dbuf_hash_table") == -1) {
mdb_warn("failed to read 'dbuf_hash_table'");
return (DCMD_ERR);
}
for (i = 0; i < HISTOSZ; i++) {
histo[i] = 0;
histo2[i] = 0;
}
ndbufs = 0;
for (bucket = 0; bucket < ht.hash_table_mask+1; bucket++) {
int len;
if (mdb_vread(&dbp, sizeof (void *),
(uintptr_t)(ht.hash_table+bucket)) == -1) {
mdb_warn("failed to read hash bucket %u at %p",
bucket, ht.hash_table+bucket);
return (DCMD_ERR);
}
len = 0;
while (dbp != 0) {
if (mdb_vread(&db, sizeof (dmu_buf_impl_t),
dbp) == -1) {
mdb_warn("failed to read dbuf at %p", dbp);
return (DCMD_ERR);
}
dbp = (uintptr_t)db.db_hash_next;
for (i = MIN(len, HISTOSZ - 1); i >= 0; i--)
histo2[i]++;
len++;
ndbufs++;
}
if (len >= HISTOSZ)
len = HISTOSZ-1;
histo[len]++;
}
mdb_printf("hash table has %llu buckets, %llu dbufs "
"(avg %llu buckets/dbuf)\n",
ht.hash_table_mask+1, ndbufs,
(ht.hash_table_mask+1)/ndbufs);
mdb_printf("\n");
maxidx = 0;
for (i = 0; i < HISTOSZ; i++)
if (histo[i] > 0)
maxidx = i;
mdb_printf("hash chain length number of buckets\n");
for (i = 0; i <= maxidx; i++)
mdb_printf("%u %llu\n", i, histo[i]);
mdb_printf("\n");
maxidx = 0;
for (i = 0; i < HISTOSZ; i++)
if (histo2[i] > 0)
maxidx = i;
mdb_printf("hash chain depth number of dbufs\n");
for (i = 0; i <= maxidx; i++)
mdb_printf("%u or more %llu %llu%%\n",
i, histo2[i], histo2[i]*100/ndbufs);
return (DCMD_OK);
}
typedef struct dbufs_data {
mdb_ctf_id_t id;
uint64_t objset;
uint64_t object;
uint64_t level;
uint64_t blkid;
char *osname;
} dbufs_data_t;
#define DBUFS_UNSET (0xbaddcafedeadbeefULL)
/* ARGSUSED */
static int
dbufs_cb(uintptr_t addr, const void *unknown, void *arg)
{
dbufs_data_t *data = arg;
uintptr_t objset;
dmu_buf_t db;
uint8_t level;
uint64_t blkid;
char osname[MAXNAMELEN];
if (GETMEMBID(addr, &data->id, db_objset, objset) ||
GETMEMBID(addr, &data->id, db, db) ||
GETMEMBID(addr, &data->id, db_level, level) ||
GETMEMBID(addr, &data->id, db_blkid, blkid)) {
return (WALK_ERR);
}
if ((data->objset == DBUFS_UNSET || data->objset == objset) &&
(data->osname == NULL || (objset_name(objset, osname) == 0 &&
strcmp(data->osname, osname) == 0)) &&
(data->object == DBUFS_UNSET || data->object == db.db_object) &&
(data->level == DBUFS_UNSET || data->level == level) &&
(data->blkid == DBUFS_UNSET || data->blkid == blkid)) {
mdb_printf("%#lr\n", addr);
}
return (WALK_NEXT);
}
/* ARGSUSED */
static int
dbufs(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
dbufs_data_t data;
char *object = NULL;
char *blkid = NULL;
data.objset = data.object = data.level = data.blkid = DBUFS_UNSET;
data.osname = NULL;
if (mdb_getopts(argc, argv,
'O', MDB_OPT_UINT64, &data.objset,
'n', MDB_OPT_STR, &data.osname,
'o', MDB_OPT_STR, &object,
'l', MDB_OPT_UINT64, &data.level,
'b', MDB_OPT_STR, &blkid) != argc) {
return (DCMD_USAGE);
}
if (object) {
if (strcmp(object, "mdn") == 0) {
data.object = DMU_META_DNODE_OBJECT;
} else {
data.object = mdb_strtoull(object);
}
}
if (blkid) {
if (strcmp(blkid, "bonus") == 0) {
data.blkid = DB_BONUS_BLKID;
} else {
data.blkid = mdb_strtoull(blkid);
}
}
if (mdb_ctf_lookup_by_name("struct dmu_buf_impl", &data.id) == -1) {
mdb_warn("couldn't find struct dmu_buf_impl_t");
return (DCMD_ERR);
}
if (mdb_walk("dmu_buf_impl_t", dbufs_cb, &data) != 0) {
mdb_warn("can't walk dbufs");
return (DCMD_ERR);
}
return (DCMD_OK);
}
typedef struct abuf_find_data {
dva_t dva;
mdb_ctf_id_t id;
} abuf_find_data_t;
/* ARGSUSED */
static int
abuf_find_cb(uintptr_t addr, const void *unknown, void *arg)
{
abuf_find_data_t *data = arg;
dva_t dva;
if (GETMEMBID(addr, &data->id, b_dva, dva)) {
return (WALK_ERR);
}
if (dva.dva_word[0] == data->dva.dva_word[0] &&
dva.dva_word[1] == data->dva.dva_word[1]) {
mdb_printf("%#lr\n", addr);
}
return (WALK_NEXT);
}
/* ARGSUSED */
static int
abuf_find(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
abuf_find_data_t data;
GElf_Sym sym;
int i;
const char *syms[] = {
"ARC_mru_top",
"ARC_mru_bot",
"ARC_mfu_top",
"ARC_mfu_bot",
};
if (argc != 2)
return (DCMD_USAGE);
for (i = 0; i < 2; i ++) {
switch (argv[i].a_type) {
case MDB_TYPE_STRING:
data.dva.dva_word[i] = mdb_strtoull(argv[i].a_un.a_str);
break;
case MDB_TYPE_IMMEDIATE:
data.dva.dva_word[i] = argv[i].a_un.a_val;
break;
default:
return (DCMD_USAGE);
}
}
if (mdb_ctf_lookup_by_name("struct arc_buf_hdr", &data.id) == -1) {
mdb_warn("couldn't find struct arc_buf_hdr");
return (DCMD_ERR);
}
for (i = 0; i < sizeof (syms) / sizeof (syms[0]); i++) {
if (mdb_lookup_by_name(syms[i], &sym)) {
mdb_warn("can't find symbol %s", syms[i]);
return (DCMD_ERR);
}
if (mdb_pwalk("list", abuf_find_cb, &data, sym.st_value) != 0) {
mdb_warn("can't walk %s", syms[i]);
return (DCMD_ERR);
}
}
return (DCMD_OK);
}
void
abuf_help(void)
{
mdb_printf("::abuf_find dva_word[0] dva_word[1]\n");
}
/*
* ::spa
*
* -c Print configuration information as well
* -v Print vdev state
* -e Print vdev error stats
*
* Print a summarized spa_t. When given no arguments, prints out a table of all
* active pools on the system.
*/
/* ARGSUSED */
static int
spa_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
spa_t spa;
char poolname[MAXNAMELEN];
const char *statetab[] = { "ACTIVE", "EXPORTED", "DESTROYED",
"UNINIT", "UNAVAIL" };
const char *state;
int config = FALSE;
int vdevs = FALSE;
int errors = FALSE;
if (mdb_getopts(argc, argv,
'c', MDB_OPT_SETBITS, TRUE, &config,
'v', MDB_OPT_SETBITS, TRUE, &vdevs,
'e', MDB_OPT_SETBITS, TRUE, &errors,
NULL) != argc)
return (DCMD_USAGE);
if (!(flags & DCMD_ADDRSPEC)) {
if (mdb_walk_dcmd("spa", "spa", argc, argv) == -1) {
mdb_warn("can't walk spa");
return (DCMD_ERR);
}
return (DCMD_OK);
}
if (flags & DCMD_PIPE_OUT) {
mdb_printf("%#lr\n", addr);
return (DCMD_OK);
}
if (DCMD_HDRSPEC(flags))
mdb_printf("%<u>%-?s %9s %-*s%</u>\n", "ADDR", "STATE",
sizeof (uintptr_t) == 4 ? 60 : 52, "NAME");
if (mdb_vread(&spa, sizeof (spa), addr) == -1) {
mdb_warn("failed to read spa_t at %p", addr);
return (DCMD_ERR);
}
if (mdb_readstr(poolname, sizeof (poolname), (uintptr_t)spa.spa_name)
== -1) {
mdb_warn("failed to read pool name at %p", spa.spa_name);
return (DCMD_ERR);
}
if (spa.spa_state < 0 || spa.spa_state > POOL_STATE_UNAVAIL)
state = "UNKNOWN";
else
state = statetab[spa.spa_state];
mdb_printf("%0?p %9s %s\n", addr, state, poolname);
if (config) {
mdb_printf("\n");
mdb_inc_indent(4);
if (mdb_call_dcmd("spa_config", addr, flags, 0,
NULL) != DCMD_OK)
return (DCMD_ERR);
mdb_dec_indent(4);
}
if (vdevs || errors) {
mdb_arg_t v;
v.a_type = MDB_TYPE_STRING;
v.a_un.a_str = "-e";
mdb_printf("\n");
mdb_inc_indent(4);
if (mdb_call_dcmd("spa_vdevs", addr, flags, errors ? 1 : 0,
&v) != DCMD_OK)
return (DCMD_ERR);
mdb_dec_indent(4);
}
return (DCMD_OK);
}
/*
* ::spa_config
*
* Given a spa_t, print the configuration information stored in spa_config.
* Since it's just an nvlist, format it as an indented list of name=value pairs.
* We simply read the value of spa_config and pass off to ::nvlist.
*/
/* ARGSUSED */
static int
spa_print_config(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
spa_t spa;
if (argc != 0 || !(flags & DCMD_ADDRSPEC))
return (DCMD_USAGE);
if (mdb_vread(&spa, sizeof (spa), addr) == -1) {
mdb_warn("failed to read spa_t at %p", addr);
return (DCMD_ERR);
}
if (spa.spa_config == NULL) {
mdb_printf("(none)\n");
return (DCMD_OK);
}
return (mdb_call_dcmd("nvlist", (uintptr_t)spa.spa_config, flags,
0, NULL));
}
void
vdev_help(void)
{
mdb_printf("[vdev_t*]::vdev [-qr]\n"
"\t-> -q display vdev_queue parameters\n"
"\t-> -r recursive (visit all children)\n");
}
/*
* ::vdev
*
* Print out a summarized vdev_t, in the following form:
*
* ADDR STATE AUX DESC
* fffffffbcde23df0 HEALTHY - /dev/dsk/c0t0d0
*
* or with "-q" to print out a vdev_t's vdev_queue parameters:
*
* vdev_t: c26ae4c0
* c26ae73c min pending 0x2
* c26ae744 max pending 0x23
* c26ae74c agg limit 0x20000
* c26ae754 time shift 0x4
* c26ae75c ramp rate 0x2
*
* If '-r' is specified, recursively visit all children.
*
* With '-e', the statistics associated with the vdev are printed as well.
*/
static int
do_print_vdev(uintptr_t addr, int flags, int depth, int queue, int stats,
int recursive)
{
vdev_t vdev;
char desc[MAXNAMELEN];
int c, children;
uintptr_t *child;
const char *state, *aux;
if (mdb_vread(&vdev, sizeof (vdev), (uintptr_t)addr) == -1) {
mdb_warn("failed to read vdev_t at %p\n", (uintptr_t)addr);
return (DCMD_ERR);
}
if (flags & DCMD_PIPE_OUT) {
mdb_printf("%#lr", addr);
} else {
if (vdev.vdev_path != NULL) {
if (mdb_readstr(desc, sizeof (desc),
(uintptr_t)vdev.vdev_path) == -1) {
mdb_warn("failed to read vdev_path at %p\n",
vdev.vdev_path);
return (DCMD_ERR);
}
} else if (vdev.vdev_ops != NULL) {
vdev_ops_t ops;
if (mdb_vread(&ops, sizeof (ops),
(uintptr_t)vdev.vdev_ops) == -1) {
mdb_warn("failed to read vdev_ops at %p\n",
vdev.vdev_ops);
return (DCMD_ERR);
}
(void) strcpy(desc, ops.vdev_op_type);
} else {
(void) strcpy(desc, "<unknown>");
}
if (depth == 0 && DCMD_HDRSPEC(flags))
mdb_printf("%<u>%-?s %-9s %-12s %-*s%</u>\n",
"ADDR", "STATE", "AUX",
sizeof (uintptr_t) == 4 ? 43 : 35,
"DESCRIPTION");
mdb_printf("%0?p ", addr);
switch (vdev.vdev_state) {
case VDEV_STATE_CLOSED:
state = "CLOSED";
break;
case VDEV_STATE_OFFLINE:
state = "OFFLINE";
break;
case VDEV_STATE_CANT_OPEN:
state = "CANT_OPEN";
break;
case VDEV_STATE_DEGRADED:
state = "DEGRADED";
break;
case VDEV_STATE_HEALTHY:
state = "HEALTHY";
break;
default:
state = "UNKNOWN";
break;
}
switch (vdev.vdev_stat.vs_aux) {
case VDEV_AUX_NONE:
aux = "-";
break;
case VDEV_AUX_OPEN_FAILED:
aux = "OPEN_FAILED";
break;
case VDEV_AUX_CORRUPT_DATA:
aux = "CORRUPT_DATA";
break;
case VDEV_AUX_NO_REPLICAS:
aux = "NO_REPLICAS";
break;
case VDEV_AUX_BAD_GUID_SUM:
aux = "BAD_GUID_SUM";
break;
case VDEV_AUX_TOO_SMALL:
aux = "TOO_SMALL";
break;
case VDEV_AUX_BAD_LABEL:
aux = "BAD_LABEL";
break;
default:
aux = "UNKNOWN";
break;
}
mdb_printf("%-9s %-12s %*s%s\n", state, aux, depth, "", desc);
if (queue) {
mdb_inc_indent(4);
mdb_printf("\n");
mdb_printf("%p min pending 0x%llx\n",
(uintptr_t)(addr + offsetof(vdev_t,
vdev_queue.vq_min_pending)),
vdev.vdev_queue.vq_min_pending);
mdb_printf("%p max pending 0x%llx\n",
(uintptr_t)(addr + offsetof(vdev_t,
vdev_queue.vq_max_pending)),
vdev.vdev_queue.vq_max_pending);
mdb_printf("%p agg limit 0x%llx\n",
(uintptr_t)(addr + offsetof(vdev_t,
vdev_queue.vq_agg_limit)),
vdev.vdev_queue.vq_agg_limit);
mdb_printf("%p time shift 0x%llx\n",
(uintptr_t)(addr + offsetof(vdev_t,
vdev_queue.vq_time_shift)),
vdev.vdev_queue.vq_time_shift);
mdb_printf("%p ramp rate 0x%llx\n",
(uintptr_t)(addr + offsetof(vdev_t,
vdev_queue.vq_ramp_rate)),
vdev.vdev_queue.vq_ramp_rate);
mdb_dec_indent(4);
}
if (stats) {
vdev_stat_t *vs = &vdev.vdev_stat;
int i;
mdb_inc_indent(4);
mdb_printf("\n");
mdb_printf("%<u> %12s %12s %12s %12s "
"%12s%</u>\n", "READ", "WRITE", "FREE", "CLAIM",
"IOCTL");
mdb_printf("OPS ");
for (i = 1; i < ZIO_TYPES; i++)
mdb_printf("%11#llx%s", vs->vs_ops[i],
i == ZIO_TYPES - 1 ? "" : " ");
mdb_printf("\n");
mdb_printf("BYTES ");
for (i = 1; i < ZIO_TYPES; i++)
mdb_printf("%11#llx%s", vs->vs_bytes[i],
i == ZIO_TYPES - 1 ? "" : " ");
mdb_printf("\n");
mdb_printf("EREAD %10#llx\n", vs->vs_read_errors);
mdb_printf("EWRITE %10#llx\n", vs->vs_write_errors);
mdb_printf("ECKSUM %10#llx\n",
vs->vs_checksum_errors);
mdb_dec_indent(4);
}
if (queue || stats)
mdb_printf("\n");
}
children = vdev.vdev_children;
if (children == 0 || !recursive)
return (DCMD_OK);
child = mdb_alloc(children * sizeof (void *), UM_SLEEP | UM_GC);
if (mdb_vread(child, children * sizeof (void *),
(uintptr_t)vdev.vdev_child) == -1) {
mdb_warn("failed to read vdev children at %p", vdev.vdev_child);
return (DCMD_ERR);
}
for (c = 0; c < children; c++) {
if (do_print_vdev(child[c], flags, depth + 2, queue, stats,
recursive))
return (DCMD_ERR);
}
return (DCMD_OK);
}
static int
vdev_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
int print_queue = FALSE;
int recursive = FALSE;
int stats = FALSE;
if (mdb_getopts(argc, argv,
'q', MDB_OPT_SETBITS, TRUE, &print_queue,
'r', MDB_OPT_SETBITS, TRUE, &recursive,
'e', MDB_OPT_SETBITS, TRUE, &stats,
NULL) != argc)
return (DCMD_USAGE);
if (!(flags & DCMD_ADDRSPEC)) {
mdb_warn("no vdev_t address given\n");
return (DCMD_ERR);
}
return (do_print_vdev(addr, flags, 0, print_queue, stats, recursive));
}
typedef struct metaslab_walk_data {
uint64_t mw_numvdevs;
uintptr_t *mw_vdevs;
int mw_curvdev;
uint64_t mw_nummss;
uintptr_t *mw_mss;
int mw_curms;
} metaslab_walk_data_t;
static int
metaslab_walk_step(mdb_walk_state_t *wsp)
{
metaslab_walk_data_t *mw = wsp->walk_data;
metaslab_t ms;
uintptr_t msp;
if (mw->mw_curvdev >= mw->mw_numvdevs)
return (WALK_DONE);
if (mw->mw_mss == NULL) {
uintptr_t mssp;
uintptr_t vdevp;
ASSERT(mw->mw_curms == 0);
ASSERT(mw->mw_nummss == 0);
vdevp = mw->mw_vdevs[mw->mw_curvdev];
if (GETMEMB(vdevp, struct vdev, vdev_ms, mssp) ||
GETMEMB(vdevp, struct vdev, vdev_ms_count, mw->mw_nummss)) {
return (WALK_ERR);
}
mw->mw_mss = mdb_alloc(mw->mw_nummss * sizeof (void*),
UM_SLEEP | UM_GC);
if (mdb_vread(mw->mw_mss, mw->mw_nummss * sizeof (void*),
mssp) == -1) {
mdb_warn("failed to read vdev_ms at %p", mssp);
return (WALK_ERR);
}
}
if (mw->mw_curms >= mw->mw_nummss) {
mw->mw_mss = NULL;
mw->mw_curms = 0;
mw->mw_nummss = 0;
mw->mw_curvdev++;
return (WALK_NEXT);
}
msp = mw->mw_mss[mw->mw_curms];
if (mdb_vread(&ms, sizeof (metaslab_t), msp) == -1) {
mdb_warn("failed to read metaslab_t at %p", msp);
return (WALK_ERR);
}
mw->mw_curms++;
return (wsp->walk_callback(msp, &ms, wsp->walk_cbdata));
}
/* ARGSUSED */
static int
metaslab_walk_init(mdb_walk_state_t *wsp)
{
metaslab_walk_data_t *mw;
uintptr_t root_vdevp;
uintptr_t childp;
if (wsp->walk_addr == NULL) {
mdb_warn("must supply address of spa_t\n");
return (WALK_ERR);
}
mw = mdb_zalloc(sizeof (metaslab_walk_data_t), UM_SLEEP | UM_GC);
if (GETMEMB(wsp->walk_addr, struct spa, spa_root_vdev, root_vdevp) ||
GETMEMB(root_vdevp, struct vdev, vdev_children, mw->mw_numvdevs) ||
GETMEMB(root_vdevp, struct vdev, vdev_child, childp)) {
return (DCMD_ERR);
}
mw->mw_vdevs = mdb_alloc(mw->mw_numvdevs * sizeof (void *),
UM_SLEEP | UM_GC);
if (mdb_vread(mw->mw_vdevs, mw->mw_numvdevs * sizeof (void *),
childp) == -1) {
mdb_warn("failed to read root vdev children at %p", childp);
return (DCMD_ERR);
}
wsp->walk_data = mw;
return (WALK_NEXT);
}
typedef struct mdb_spa {
uintptr_t spa_dsl_pool;
uintptr_t spa_root_vdev;
} mdb_spa_t;
typedef struct mdb_dsl_dir {
uintptr_t dd_phys;
uint64_t dd_used_bytes;
int64_t dd_space_towrite[TXG_SIZE];
} mdb_dsl_dir_t;
typedef struct mdb_dsl_dir_phys {
uint64_t dd_used_bytes;
uint64_t dd_compressed_bytes;
uint64_t dd_uncompressed_bytes;
} mdb_dsl_dir_phys_t;
typedef struct mdb_vdev {
uintptr_t vdev_parent;
uintptr_t vdev_ms;
uint64_t vdev_ms_count;
vdev_stat_t vdev_stat;
} mdb_vdev_t;
typedef struct mdb_metaslab {
space_map_t ms_allocmap[TXG_SIZE];
space_map_t ms_freemap[TXG_SIZE];
space_map_t ms_map;
space_map_obj_t ms_smo;
space_map_obj_t ms_smo_syncing;
} mdb_metaslab_t;
typedef struct space_data {
uint64_t ms_allocmap[TXG_SIZE];
uint64_t ms_freemap[TXG_SIZE];
uint64_t ms_map;
uint64_t avail;
uint64_t nowavail;
} space_data_t;
/* ARGSUSED */
static int
space_cb(uintptr_t addr, const void *unknown, void *arg)
{
space_data_t *sd = arg;
mdb_metaslab_t ms;
if (GETMEMB(addr, struct metaslab, ms_allocmap, ms.ms_allocmap) ||
GETMEMB(addr, struct metaslab, ms_freemap, ms.ms_freemap) ||
GETMEMB(addr, struct metaslab, ms_map, ms.ms_map) ||
GETMEMB(addr, struct metaslab, ms_smo, ms.ms_smo) ||
GETMEMB(addr, struct metaslab, ms_smo_syncing, ms.ms_smo_syncing)) {
return (WALK_ERR);
}
sd->ms_allocmap[0] += ms.ms_allocmap[0].sm_space;
sd->ms_allocmap[1] += ms.ms_allocmap[1].sm_space;
sd->ms_allocmap[2] += ms.ms_allocmap[2].sm_space;
sd->ms_allocmap[3] += ms.ms_allocmap[3].sm_space;
sd->ms_freemap[0] += ms.ms_freemap[0].sm_space;
sd->ms_freemap[1] += ms.ms_freemap[1].sm_space;
sd->ms_freemap[2] += ms.ms_freemap[2].sm_space;
sd->ms_freemap[3] += ms.ms_freemap[3].sm_space;
sd->ms_map += ms.ms_map.sm_space;
sd->avail += ms.ms_map.sm_size - ms.ms_smo.smo_alloc;
sd->nowavail += ms.ms_map.sm_size - ms.ms_smo_syncing.smo_alloc;
return (WALK_NEXT);
}
/*
* ::spa_space [-b]
*
* Given a spa_t, print out it's on-disk space usage and in-core
* estimates of future usage. If -b is given, print space in bytes.
* Otherwise print in megabytes.
*/
/* ARGSUSED */
static int
spa_space(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
mdb_spa_t spa;
uintptr_t dp_root_dir;
mdb_dsl_dir_t dd;
mdb_dsl_dir_phys_t dsp;
uint64_t children;
uintptr_t childaddr;
space_data_t sd;
int shift = 20;
char *suffix = "M";
int bits = FALSE;
if (mdb_getopts(argc, argv, 'b', MDB_OPT_SETBITS, TRUE, &bits, NULL) !=
argc)
return (DCMD_USAGE);
if (!(flags & DCMD_ADDRSPEC))
return (DCMD_USAGE);
if (bits) {
shift = 0;
suffix = "";
}
if (GETMEMB(addr, struct spa, spa_dsl_pool, spa.spa_dsl_pool) ||
GETMEMB(addr, struct spa, spa_root_vdev, spa.spa_root_vdev) ||
GETMEMB(spa.spa_root_vdev, struct vdev, vdev_children, children) ||
GETMEMB(spa.spa_root_vdev, struct vdev, vdev_child, childaddr) ||
GETMEMB(spa.spa_dsl_pool, struct dsl_pool,
dp_root_dir, dp_root_dir) ||
GETMEMB(dp_root_dir, struct dsl_dir, dd_phys, dd.dd_phys) ||
GETMEMB(dp_root_dir, struct dsl_dir,
dd_used_bytes, dd.dd_used_bytes) ||
GETMEMB(dp_root_dir, struct dsl_dir,
dd_space_towrite, dd.dd_space_towrite) ||
GETMEMB(dd.dd_phys, struct dsl_dir_phys,
dd_used_bytes, dsp.dd_used_bytes) ||
GETMEMB(dd.dd_phys, struct dsl_dir_phys,
dd_compressed_bytes, dsp.dd_compressed_bytes) ||
GETMEMB(dd.dd_phys, struct dsl_dir_phys,
dd_uncompressed_bytes, dsp.dd_uncompressed_bytes)) {
return (DCMD_ERR);
}
mdb_printf("dd_space_towrite = %llu%s %llu%s %llu%s %llu%s\n",
dd.dd_space_towrite[0] >> shift, suffix,
dd.dd_space_towrite[1] >> shift, suffix,
dd.dd_space_towrite[2] >> shift, suffix,
dd.dd_space_towrite[3] >> shift, suffix);
mdb_printf("dd_used_bytes = %llu%s\n",
dd.dd_used_bytes >> shift, suffix);
mdb_printf("dd_phys.dd_used_bytes = %llu%s\n",
dsp.dd_used_bytes >> shift, suffix);
mdb_printf("dd_phys.dd_compressed_bytes = %llu%s\n",
dsp.dd_compressed_bytes >> shift, suffix);
mdb_printf("dd_phys.dd_uncompressed_bytes = %llu%s\n",
dsp.dd_uncompressed_bytes >> shift, suffix);
bzero(&sd, sizeof (sd));
if (mdb_pwalk("metaslab", space_cb, &sd, addr) != 0) {
mdb_warn("can't walk metaslabs");
return (DCMD_ERR);
}
mdb_printf("ms_allocmap = %llu%s %llu%s %llu%s %llu%s\n",
sd.ms_allocmap[0] >> shift, suffix,
sd.ms_allocmap[1] >> shift, suffix,
sd.ms_allocmap[2] >> shift, suffix,
sd.ms_allocmap[3] >> shift, suffix);
mdb_printf("ms_freemap = %llu%s %llu%s %llu%s %llu%s\n",
sd.ms_freemap[0] >> shift, suffix,
sd.ms_freemap[1] >> shift, suffix,
sd.ms_freemap[2] >> shift, suffix,
sd.ms_freemap[3] >> shift, suffix);
mdb_printf("ms_map = %llu%s\n", sd.ms_map >> shift, suffix);
mdb_printf("last synced avail = %llu%s\n", sd.avail >> shift, suffix);
mdb_printf("current syncing avail = %llu%s\n",
sd.nowavail >> shift, suffix);
return (DCMD_OK);
}
/*
* ::spa_verify
*
* Given a spa_t, verify that that the pool is self-consistent.
* Currently, it only checks to make sure that the vdev tree exists.
*/
/* ARGSUSED */
static int
spa_verify(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
spa_t spa;
if (argc != 0 || !(flags & DCMD_ADDRSPEC))
return (DCMD_USAGE);
if (mdb_vread(&spa, sizeof (spa), addr) == -1) {
mdb_warn("failed to read spa_t at %p", addr);
return (DCMD_ERR);
}
if (spa.spa_root_vdev == NULL) {
mdb_printf("no vdev tree present\n");
return (DCMD_OK);
}
return (DCMD_OK);
}
/*
* ::spa_vdevs
*
* -e Include error stats
*
* Print out a summarized list of vdevs for the given spa_t.
* This is accomplished by invoking "::vdev -re" on the root vdev.
*/
/* ARGSUSED */
static int
spa_vdevs(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
spa_t spa;
mdb_arg_t v;
int errors = FALSE;
if (mdb_getopts(argc, argv,
'e', MDB_OPT_SETBITS, TRUE, &errors,
NULL) != argc)
return (DCMD_USAGE);
if (!(flags & DCMD_ADDRSPEC))
return (DCMD_USAGE);
if (mdb_vread(&spa, sizeof (spa), addr) == -1) {
mdb_warn("failed to read spa_t at %p", addr);
return (DCMD_ERR);
}
/*
* Unitialized spa_t structures can have a NULL root vdev.
*/
if (spa.spa_root_vdev == NULL) {
mdb_printf("no associated vdevs\n");
return (DCMD_OK);
}
v.a_type = MDB_TYPE_STRING;
v.a_un.a_str = errors ? "-re" : "-r";
return (mdb_call_dcmd("vdev", (uintptr_t)spa.spa_root_vdev,
flags, 1, &v));
}
typedef struct txg_list_walk_data {
uintptr_t lw_head[TXG_SIZE];
int lw_txgoff;
int lw_maxoff;
size_t lw_offset;
void *lw_obj;
} txg_list_walk_data_t;
static int
txg_list_walk_init_common(mdb_walk_state_t *wsp, int txg, int maxoff)
{
txg_list_walk_data_t *lwd;
txg_list_t list;
int i;
lwd = mdb_alloc(sizeof (txg_list_walk_data_t), UM_SLEEP | UM_GC);
if (mdb_vread(&list, sizeof (txg_list_t), wsp->walk_addr) == -1) {
mdb_warn("failed to read txg_list_t at %#lx", wsp->walk_addr);
return (WALK_ERR);
}
for (i = 0; i < TXG_SIZE; i++)
lwd->lw_head[i] = (uintptr_t)list.tl_head[i];
lwd->lw_offset = list.tl_offset;
lwd->lw_obj = mdb_alloc(lwd->lw_offset + sizeof (txg_node_t),
UM_SLEEP | UM_GC);
lwd->lw_txgoff = txg;
lwd->lw_maxoff = maxoff;
wsp->walk_addr = lwd->lw_head[lwd->lw_txgoff];
wsp->walk_data = lwd;
return (WALK_NEXT);
}
static int
txg_list_walk_init(mdb_walk_state_t *wsp)
{
return (txg_list_walk_init_common(wsp, 0, TXG_SIZE-1));
}
static int
txg_list0_walk_init(mdb_walk_state_t *wsp)
{
return (txg_list_walk_init_common(wsp, 0, 0));
}
static int
txg_list1_walk_init(mdb_walk_state_t *wsp)
{
return (txg_list_walk_init_common(wsp, 1, 1));
}
static int
txg_list2_walk_init(mdb_walk_state_t *wsp)
{
return (txg_list_walk_init_common(wsp, 2, 2));
}
static int
txg_list3_walk_init(mdb_walk_state_t *wsp)
{
return (txg_list_walk_init_common(wsp, 3, 3));
}
static int
txg_list_walk_step(mdb_walk_state_t *wsp)
{
txg_list_walk_data_t *lwd = wsp->walk_data;
uintptr_t addr;
txg_node_t *node;
int status;
while (wsp->walk_addr == NULL && lwd->lw_txgoff < lwd->lw_maxoff) {
lwd->lw_txgoff++;
wsp->walk_addr = lwd->lw_head[lwd->lw_txgoff];
}
if (wsp->walk_addr == NULL)
return (WALK_DONE);
addr = wsp->walk_addr - lwd->lw_offset;
if (mdb_vread(lwd->lw_obj,
lwd->lw_offset + sizeof (txg_node_t), addr) == -1) {
mdb_warn("failed to read list element at %#lx", addr);
return (WALK_ERR);
}
status = wsp->walk_callback(addr, lwd->lw_obj, wsp->walk_cbdata);
node = (txg_node_t *)((uintptr_t)lwd->lw_obj + lwd->lw_offset);
wsp->walk_addr = (uintptr_t)node->tn_next[lwd->lw_txgoff];
return (status);
}
/*
* ::walk spa
*
* Walk all named spa_t structures in the namespace. This is nothing more than
* a layered avl walk.
*/
static int
spa_walk_init(mdb_walk_state_t *wsp)
{
GElf_Sym sym;
if (wsp->walk_addr != NULL) {
mdb_warn("spa walk only supports global walks\n");
return (WALK_ERR);
}
if (mdb_lookup_by_obj(ZFS_OBJ_NAME, "spa_namespace_avl", &sym) == -1) {
mdb_warn("failed to find symbol 'spa_namespace_avl'");
return (WALK_ERR);
}
wsp->walk_addr = (uintptr_t)sym.st_value;
if (mdb_layered_walk("avl", wsp) == -1) {
mdb_warn("failed to walk 'avl'\n");
return (WALK_ERR);
}
return (WALK_NEXT);
}
static int
spa_walk_step(mdb_walk_state_t *wsp)
{
spa_t spa;
if (mdb_vread(&spa, sizeof (spa), wsp->walk_addr) == -1) {
mdb_warn("failed to read spa_t at %p", wsp->walk_addr);
return (WALK_ERR);
}
return (wsp->walk_callback(wsp->walk_addr, &spa, wsp->walk_cbdata));
}
/*
* MDB module linkage information:
*
* We declare a list of structures describing our dcmds, and a function
* named _mdb_init to return a pointer to our module information.
*/
static const mdb_dcmd_t dcmds[] = {
{ "blkptr", ":", "print blkptr_t", blkptr },
{ "dbuf", ":", "print dmu_buf_impl_t", dbuf },
{ "dbuf_stats", ":", "dbuf stats", dbuf_stats },
{ "dbufs",
"\t[-O objset_t*] [-n objset_name | \"mos\"] [-o object | \"mdn\"] \n"
"\t[-l level] [-b blkid | \"bonus\"]",
"find dmu_buf_impl_t's that meet criterion", dbufs },
{ "abuf_find", "dva_word[0] dva_word[1]",
"find arc_buf_hdr_t of a specified DVA",
abuf_find },
{ "spa", "?[-cv]", "spa_t summary", spa_print },
{ "spa_config", ":", "print spa_t configuration", spa_print_config },
{ "spa_verify", ":", "verify spa_t consistency", spa_verify },
{ "spa_space", ":[-b]", "print spa_t on-disk space usage", spa_space },
{ "spa_vdevs", ":", "given a spa_t, print vdev summary", spa_vdevs },
{ "vdev", ":[-qre]", "vdev_t summary", vdev_print },
{ "zio_pipeline", ":", "decode a zio pipeline", zio_pipeline },
{ NULL }
};
static const mdb_walker_t walkers[] = {
/*
* In userland, there is no generic provider of list_t walkers, so we
* need to add it.
*/
#ifndef _KERNEL
{ LIST_WALK_NAME, LIST_WALK_DESC,
list_walk_init, list_walk_step, list_walk_fini },
#endif
{ "zms_freelist", "walk ZFS metaslab freelist",
freelist_walk_init, freelist_walk_step, NULL },
{ "txg_list", "given any txg_list_t *, walk all entries in all txgs",
txg_list_walk_init, txg_list_walk_step, NULL },
{ "txg_list0", "given any txg_list_t *, walk all entries in txg 0",
txg_list0_walk_init, txg_list_walk_step, NULL },
{ "txg_list1", "given any txg_list_t *, walk all entries in txg 1",
txg_list1_walk_init, txg_list_walk_step, NULL },
{ "txg_list2", "given any txg_list_t *, walk all entries in txg 2",
txg_list2_walk_init, txg_list_walk_step, NULL },
{ "txg_list3", "given any txg_list_t *, walk all entries in txg 3",
txg_list3_walk_init, txg_list_walk_step, NULL },
{ "spa", "walk all spa_t entries in the namespace",
spa_walk_init, spa_walk_step, NULL },
{ "metaslab", "given a spa_t *, walk all metaslab_t structures",
metaslab_walk_init, metaslab_walk_step, NULL },
{ NULL }
};
static const mdb_modinfo_t modinfo = {
MDB_API_VERSION, dcmds, walkers
};
const mdb_modinfo_t *
_mdb_init(void)
{
return (&modinfo);
}