85 lines
3.1 KiB
Python
85 lines
3.1 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# Copyright 2012 Pedro Navarro Perez
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# Copyright 2013 Cloudbase Solutions Srl
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# 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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"""
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Helper methods for operations related to the management of volumes,
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and storage repositories
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"""
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import time
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from eventlet.green import subprocess
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from oslo.config import cfg
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from nova import utils
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from nova.virt.hyperv import basevolumeutils
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from nova.virt.hyperv import vmutils
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CONF = cfg.CONF
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class VolumeUtils(basevolumeutils.BaseVolumeUtils):
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def __init__(self):
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super(VolumeUtils, self).__init__()
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def execute(self, *args, **kwargs):
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_PIPE = subprocess.PIPE # pylint: disable=E1101
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proc = subprocess.Popen(
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[args],
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stdin=_PIPE,
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stdout=_PIPE,
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stderr=_PIPE,
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)
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stdout_value, stderr_value = proc.communicate()
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if stdout_value.find('The operation completed successfully') == -1:
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raise vmutils.HyperVException(_('An error has occurred when '
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'calling the iscsi initiator: %s')
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% stdout_value)
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def login_storage_target(self, target_lun, target_iqn, target_portal):
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"""Add target portal, list targets and logins to the target."""
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(target_address,
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target_port) = utils.parse_server_string(target_portal)
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#Adding target portal to iscsi initiator. Sending targets
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self.execute('iscsicli.exe ' + 'AddTargetPortal ' +
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target_address + ' ' + target_port +
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' * * * * * * * * * * * * *')
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#Listing targets
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self.execute('iscsicli.exe ' + 'LisTargets')
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#Sending login
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self.execute('iscsicli.exe ' + 'qlogintarget ' + target_iqn)
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#Waiting the disk to be mounted.
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#TODO(pnavarro): Check for the operation to end instead of
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#relying on a timeout
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time.sleep(CONF.hyperv.volume_attach_retry_interval)
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def logout_storage_target(self, target_iqn):
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"""Logs out storage target through its session id."""
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sessions = self._conn_wmi.query("SELECT * FROM "
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"MSiSCSIInitiator_SessionClass "
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"WHERE TargetName='%s'" % target_iqn)
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for session in sessions:
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self.execute_log_out(session.SessionId)
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def execute_log_out(self, session_id):
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"""Executes log out of the session described by its session ID."""
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self.execute('iscsicli.exe ' + 'logouttarget ' + session_id)
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