OpenStack live-migration systool错误

出现这个问题的原因是本机没fibre channel， 代码调用流程如下：

1 def pre_live_migration(self, context, instance, block_migration, disk,
                       migrate_data):

2 connector = self.driver.get_volume_connector(instance)
def get_volume_connector(self, instance):
    root_helper = utils.get_root_helper()
    return connector.get_connector_properties(
        root_helper, CONF.my_block_storage_ip,
        CONF.libvirt.volume_use_multipath,
        enforce_multipath=True,
        host=CONF.host)

/usr/lib/python2.7/site-packages/os_brick/initiator/connector.py
3 def get_connector_properties(root_helper, my_ip, multipath, enforce_multipath,
                             host=None, execute=None):

connector_list = [
    'os_brick.initiator.connectors.base.BaseLinuxConnector',
    'os_brick.initiator.connectors.iscsi.ISCSIConnector',
    'os_brick.initiator.connectors.fibre_channel.FibreChannelConnector',
    ('os_brick.initiator.connectors.fibre_channel_s390x.'
     'FibreChannelConnectorS390X'),
    'os_brick.initiator.connectors.aoe.AoEConnector',
    'os_brick.initiator.connectors.remotefs.RemoteFsConnector',
    'os_brick.initiator.connectors.rbd.RBDConnector',
    'os_brick.initiator.connectors.local.LocalConnector',
    'os_brick.initiator.connectors.gpfs.GPFSConnector',
    'os_brick.initiator.connectors.drbd.DRBDConnector',
    'os_brick.initiator.connectors.huawei.HuaweiStorHyperConnector',
    'os_brick.initiator.connectors.hgst.HGSTConnector',
    'os_brick.initiator.connectors.scaleio.ScaleIOConnector',
    'os_brick.initiator.connectors.disco.DISCOConnector',
    'os_brick.initiator.connectors.vmware.VmdkConnector',
    'os_brick.initiator.windows.base.BaseWindowsConnector',
    'os_brick.initiator.windows.iscsi.WindowsISCSIConnector',
    'os_brick.initiator.windows.fibre_channel.WindowsFCConnector',
    'os_brick.initiator.windows.smbfs.WindowsSMBFSConnector',
]

解决方法：

/usr/lib/python2.7/site-packages/os_brick/initiator/connector.py其中的connector_list只保留最前面两个，其它注释掉，重启服务。

 

代码逻辑的跟踪参考了

https://blog.csdn.net/lzw06061139/article/details/52062162