author | Qiang Strony Zhang <strony.zhang@oracle.com> |
Fri, 09 Oct 2015 11:54:18 -0700 | |
branch | s11u3-sru |
changeset 4937 | 8f0976d7e40e |
parent 4072 | db0cec748ec0 |
child 5317 | fa561e436e88 |
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 iSCSI utilities.""" |
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import os |
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import platform |
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import time |
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from cinder.brick import exception |
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from cinder.openstack.common.gettextutils import _ |
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from cinder.openstack.common import log as logging |
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from cinder.openstack.common import processutils as putils |
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LOG = logging.getLogger(__name__) |
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class SolarisiSCSI(object): |
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def __init__(self, *args, **kwargs): |
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self.execute = putils.execute |
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def _get_device_path(self, connection_properties): |
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"""Get the device path from the target info.""" |
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(out, _err) = self.execute('/usr/sbin/iscsiadm', 'list', |
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'target', '-S', |
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connection_properties['target_iqn']) |
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for line in [l.strip() for l in out.splitlines()]: |
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if line.startswith("OS Device Name:"): |
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dev_path = line.split()[-1] |
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return dev_path |
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else: |
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LOG.error(_("No device is found for the target %s.") % |
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connection_properties['target_iqn']) |
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raise |
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def get_initiator(self): |
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"""Return the iSCSI initiator node name IQN""" |
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out, err = self.execute('/usr/sbin/iscsiadm', 'list', 'initiator-node') |
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# Sample first line of command output: |
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# Initiator node name: iqn.1986-03.com.sun:01:e00000000000.4f757217 |
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initiator_name_line = out.splitlines()[0] |
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return initiator_name_line.rsplit(' ', 1)[1] |
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def _connect_to_iscsi_portal(self, connection_properties): |
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# TODO(Strony): handle the CHAP authentication |
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target_ip = connection_properties['target_portal'].split(":")[0] |
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self.execute('/usr/sbin/iscsiadm', 'add', 'discovery-address', |
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target_ip) |
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self.execute('/usr/sbin/iscsiadm', 'modify', 'discovery', |
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'--sendtargets', 'enable') |
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(out, _err) = self.execute('/usr/sbin/iscsiadm', 'list', |
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'discovery-address', '-v', |
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target_ip) |
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lines = out.splitlines() |
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if not lines[0].strip().startswith('Discovery Address: ') or \ |
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lines[1].strip().startswith('Unable to get targets.'): |
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msg = _("No iSCSI target is found.") |
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LOG.error(msg) |
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raise |
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target_iqn = connection_properties['target_iqn'] |
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for line in [l.strip() for l in lines]: |
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if line.startswith("Target name:") and \ |
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line.split()[-1] == target_iqn: |
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return |
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else: |
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LOG.error(_("No active session is found for the target %s.") % |
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target_iqn) |
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raise |
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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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connection_properties for iSCSI must include: |
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target_portal - ip and optional port |
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target_iqn - iSCSI Qualified Name |
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target_lun - LUN id of the volume |
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""" |
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device_info = {'type': 'block'} |
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# TODO(Strony): support the iSCSI multipath on Solaris. |
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self._connect_to_iscsi_portal(connection_properties) |
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host_device = self._get_device_path(connection_properties) |
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# check if it is a valid device path. |
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for i in range(1, scan_tries): |
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if os.path.exists(host_device): |
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break |
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else: |
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time.sleep(i ** 2) |
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else: |
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raise exception.VolumeDeviceNotFound(device=host_device) |
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# Set the label EFI to the disk on SPARC before it is accessed and |
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# make sure the correct device path with slice 0 |
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# (like '/dev/rdsk/c0t600xxxd0s0'). |
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if platform.processor() == 'sparc': |
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tmp_dev_name = host_device.rsplit('s', 1) |
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disk_name = tmp_dev_name[0].split('/')[-1] |
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(out, _err) = self.execute('/usr/sbin/format', '-L', 'efi', '-d', |
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disk_name) |
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host_device = '%ss0' % tmp_dev_name[0] |
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|
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device_info['path'] = host_device |
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return device_info |