[RHEV] Why is the local storage domain appearing as "Inactive" after updating RHEL host to latest vdsm packages?

Issue

• After running yum update -y on a RHEL host in a RHEV environment, the local storage domain shows as "Inactive" in the Web Admin Portal
• Even though the local storage domain appears as "Inactive," both hosts and VMs continue to operate in an "Up" status
• The local storage domain cannot be activated when clicking the Activate button in the RHEVM GUI
• The following traceback errors appear in the /var/log/vdsm/vdsm.log when trying to activate the local storage domain:

Thread-26::ERROR::2013-02-18 12:05:33,922::task::853::TaskManager.Task::(_setError) Task=`9e184148-15c8-46af-ab95-7943bd1e772d`::Unexpected error
Traceback (most recent call last):
  File "/usr/share/vdsm/storage/task.py", line 861, in _run
    return fn(*args, **kargs)
  File "/usr/share/vdsm/logUtils.py", line 38, in wrapper
    res = f(*args, **kwargs)
  File "/usr/share/vdsm/storage/hsm.py", line 869, in connectStoragePool
    return self._connectStoragePool(spUUID, hostID, scsiKey, msdUUID, masterVersion, options)
  File "/usr/share/vdsm/storage/hsm.py", line 911, in _connectStoragePool
    res = pool.connect(hostID, scsiKey, msdUUID, masterVersion)
  File "/usr/share/vdsm/storage/sp.py", line 649, in connect
    self.__rebuild(msdUUID=msdUUID, masterVersion=masterVersion)
  File "/usr/share/vdsm/storage/sp.py", line 1179, in __rebuild
    self.masterDomain = self.getMasterDomain(msdUUID=msdUUID, masterVersion=masterVersion)
  File "/usr/share/vdsm/storage/sp.py", line 1524, in getMasterDomain
    raise se.StoragePoolMasterNotFound(self.spUUID, msdUUID)
StoragePoolMasterNotFound: Cannot find master domain: 'spUUID=d9efcd8c-1d84-4057-a06a-6dae95c4462d, msdUUID=8aa6e8a2-e685-4028-aa0a-9122f4fb393a'
...
Thread-38::INFO::2013-02-18 12:05:44,074::logUtils::37::dispatcher::(wrapper) Run and protect: getSpmStatus(spUUID='d9efcd8c-1d84-4057-a06a-6dae95c4462d', options=None)
Thread-38::ERROR::2013-02-18 12:05:44,074::task::853::TaskManager.Task::(_setError) Task=`234b5804-87b5-410d-b027-44efed2525dc`::Unexpected error
Traceback (most recent call last):
  File "/usr/share/vdsm/storage/task.py", line 861, in _run
    return fn(*args, **kargs)
  File "/usr/share/vdsm/logUtils.py", line 38, in wrapper
    res = f(*args, **kwargs)
  File "/usr/share/vdsm/storage/hsm.py", line 580, in getSpmStatus
    pool = self.getPool(spUUID)
  File "/usr/share/vdsm/storage/hsm.py", line 305, in getPool
    raise se.StoragePoolUnknown(spUUID)
StoragePoolUnknown: Unknown pool id, pool not connected: ('d9efcd8c-1d84-4057-a06a-6dae95c4462d',)
Thread-38::DEBUG::2013-02-18 12:05:44,075::task::872::TaskManager.Task::(_run) Task=`234b5804-87b5-410d-b027-44efed2525dc`::Task._run: 234b5804-87b5-410d-b027-44efed2525dc ('d9efcd8c-1d84-4057-a06a-6dae95c4462d',) {} failed - stopping task