author | Devjani Ray <devjani.ray@oracle.com> |
Fri, 20 May 2016 17:42:29 -0400 | |
branch | s11u3-sru |
changeset 6035 | c9748fcc32de |
parent 4937 | 8f0976d7e40e |
child 6070 | 87daa7413b2d |
child 7787 | 26bcbec7afce |
permissions | -rw-r--r-- |
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# vim: tabstop=4 shiftwidth=4 softtabstop=4 |
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# Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); you may |
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# not use this file except in compliance with the License. You may obtain |
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# a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
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# License for the specific language governing permissions and limitations |
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# under the License. |
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"""Generic Solaris Fibre Channel utilities.""" |
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import os |
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import platform |
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import time |
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from oslo_concurrency import processutils as putils |
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from oslo_log import log as logging |
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from cinder.brick import exception |
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from cinder.openstack.common.gettextutils import _ |
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LOG = logging.getLogger(__name__) |
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class SolarisFibreChannel(object): |
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def __init__(self, *args, **kwargs): |
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self.execute = putils.execute |
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def _get_fc_hbas(self): |
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"""Get Fibre Channel HBA information.""" |
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out = None |
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try: |
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out, err = self.execute('/usr/sbin/fcinfo', 'hba-port') |
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except putils.ProcessExecutionError as err: |
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return None |
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if out is None: |
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LOG.info(_("Cannot find any Fibre Channel HBAs")) |
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return None |
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|
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hbas = [] |
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hba = {} |
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for line in out.splitlines(): |
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line = line.strip() |
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# Collect the following hba-port data: |
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# 1: Port WWN |
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# 2: State (online|offline) |
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# 3: Node WWN |
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if line.startswith("HBA Port WWN:"): |
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# New HBA port entry |
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hba = {} |
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wwpn = line.split()[-1] |
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hba['port_name'] = wwpn |
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continue |
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elif line.startswith("Port Mode:"): |
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mode = line.split()[-1] |
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# Skip Target mode ports |
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if mode != 'Initiator': |
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break |
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elif line.startswith("State:"): |
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state = line.split()[-1] |
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hba['port_state'] = state |
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continue |
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elif line.startswith("Node WWN:"): |
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wwnn = line.split()[-1] |
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hba['node_name'] = wwnn |
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continue |
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if len(hba) == 3: |
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hbas.append(hba) |
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hba = {} |
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return hbas |
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|
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def get_fc_wwnns(self): |
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"""Get Fibre Channel WWNNs from the system, if any.""" |
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hbas = self._get_fc_hbas() |
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if hbas is None: |
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return None |
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|
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wwnns = [] |
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for hba in hbas: |
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if hba['port_state'] == 'online': |
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wwnn = hba['node_name'] |
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wwnns.append(wwnn) |
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return wwnns |
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|
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def get_fc_wwpns(self): |
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"""Get Fibre Channel WWPNs from the system, if any.""" |
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hbas = self._get_fc_hbas() |
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if hbas is None: |
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return None |
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|
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wwpns = [] |
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for hba in hbas: |
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if hba['port_state'] == 'online': |
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wwpn = hba['port_name'] |
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wwpns.append(wwpn) |
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return wwpns |
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|
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def _refresh_connection(self): |
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"""Force the link reinitialization to make the LUN present.""" |
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wwpns = self.get_fc_wwpns() |
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for wwpn in wwpns: |
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self.execute('/usr/sbin/fcadm', 'force-lip', wwpn) |
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def _get_device_path(self, wwn): |
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"""Get the Device Name of the WWN""" |
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114 |
try: |
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out, err = self.execute('/usr/sbin/fcinfo', 'logical-unit', '-v') |
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116 |
except putils.ProcessExecutionError as err: |
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117 |
return None |
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118 |
|
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119 |
host_dev = None |
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120 |
remote_port = None |
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if out is not None: |
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122 |
for line in [l.strip() for l in out.splitlines()]: |
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if line.startswith("OS Device Name:"): |
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host_dev = line.split()[-1] |
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125 |
if line.startswith("Remote Port WWN:"): |
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126 |
remote_port = line.split()[-1] |
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127 |
if remote_port == wwn: |
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128 |
return host_dev |
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129 |
|
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130 |
return None |
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131 |
|
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def connect_volume(self, connection_properties, scan_tries): |
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"""Attach the volume to instance_name. |
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134 |
|
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connection_properties for Fibre Channel must include: |
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136 |
target_portal - ip and optional port |
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137 |
target_iqn - iSCSI Qualified Name |
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138 |
target_lun - LUN id of the volume |
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139 |
""" |
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140 |
device_info = {'type': 'block'} |
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target_wwn = connection_properties['target_wwn'] |
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# Check for multiple target_wwn values in a list |
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143 |
if isinstance(target_wwn, list): |
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144 |
wwn = target_wwn[0] |
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145 |
|
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146 |
# The scsi_vhci disk node is not always present immediately. |
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147 |
# Sometimes we need to reinitialize the connection to trigger |
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148 |
# a refresh. |
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149 |
for i in range(1, scan_tries): |
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150 |
LOG.debug("Looking for Fibre Channel device") |
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151 |
host_dev = self._get_device_path(wwn) |
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152 |
|
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153 |
if host_dev is not None and os.path.exists(host_dev): |
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154 |
break |
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155 |
else: |
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156 |
self._refresh_connection() |
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157 |
time.sleep(i ** 2) |
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158 |
else: |
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159 |
msg = _("Fibre Channel volume device not found.") |
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160 |
LOG.error(msg) |
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161 |
raise exception.NoFibreChannelVolumeDeviceFound() |
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162 |
|
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163 |
# Set the label EFI to the disk on SPARC before it is accessed and |
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164 |
# make sure the correct device path with slice 0 |
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165 |
# (like '/dev/rdsk/c0t600xxxd0s0'). |
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166 |
if platform.processor() == 'sparc': |
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167 |
tmp_dev_name = host_device.rsplit('s', 1) |
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168 |
disk_name = tmp_dev_name[0].split('/')[-1] |
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169 |
(out, _err) = self.execute('/usr/sbin/format', '-L', 'efi', '-d', |
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170 |
disk_name) |
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171 |
host_device = '%ss0' % tmp_dev_name[0] |
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172 |
|
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173 |
device_info['path'] = host_dev |
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174 |
return device_info |