81 lines
2.9 KiB
Python
81 lines
2.9 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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# 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 sys
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from nova import block_device
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from nova.openstack.common import cfg
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from nova.openstack.common import log as logging
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from nova.virt import driver
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# Check needed for unit testing on Unix
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if sys.platform == 'win32':
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import _winreg
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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CONF.import_opt('my_ip', 'nova.config')
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class BaseVolumeUtils(object):
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def get_iscsi_initiator(self, cim_conn):
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"""Get iscsi initiator name for this machine."""
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computer_system = cim_conn.Win32_ComputerSystem()[0]
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hostname = computer_system.name
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keypath = \
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r"SOFTWARE\Microsoft\Windows NT\CurrentVersion\iSCSI\Discovery"
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try:
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key = _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE, keypath, 0,
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_winreg.KEY_ALL_ACCESS)
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temp = _winreg.QueryValueEx(key, 'DefaultInitiatorName')
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initiator_name = str(temp[0])
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_winreg.CloseKey(key)
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except Exception:
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LOG.info(_("The ISCSI initiator name can't be found. "
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"Choosing the default one"))
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computer_system = cim_conn.Win32_ComputerSystem()[0]
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initiator_name = "iqn.1991-05.com.microsoft:" + \
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hostname.lower()
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return {
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'ip': CONF.my_ip,
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'initiator': initiator_name,
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}
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def volume_in_mapping(self, mount_device, block_device_info):
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block_device_list = [block_device.strip_dev(vol['mount_device'])
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for vol in
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driver.block_device_info_get_mapping(
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block_device_info)]
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swap = driver.block_device_info_get_swap(block_device_info)
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if driver.swap_is_usable(swap):
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block_device_list.append(
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block_device.strip_dev(swap['device_name']))
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block_device_list += [block_device.strip_dev(
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ephemeral['device_name'])
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for ephemeral in
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driver.block_device_info_get_ephemerals(block_device_info)]
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LOG.debug(_("block_device_list %s"), block_device_list)
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return block_device.strip_dev(mount_device) in block_device_list
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