[14279] 2012-12-22 22:50:51.246524 SUCCESS
[14279] 2012-12-22 22:50:51.246669 Synching Metadata volume
[14279] 2012-12-22 22:50:51.246766 ['/usr/sbin/lvchange', '-ay', '/dev/VG_XenStorage-25b74c46-b305-c164-1070-6bf5abb49c5b/MGT']
[14279] 2012-12-22 22:50:51.341808 SUCCESS
[14279] 2012-12-22 22:50:51.342376 lock: released /var/lock/sm/25b74c46-b305-c164-1070-6bf5abb49c5b/sr
[14279] 2012-12-22 22:50:51.351858 ***** sr_attach: EXCEPTION exceptions.AssertionError,
File "/opt/xensource/sm/SRCommand.py", line 94, in run
return self._run_locked(sr)
File "/opt/xensource/sm/SRCommand.py", line 131, in _run_locked
return self._run(sr, target)
File "/opt/xensource/sm/SRCommand.py", line 223, in _run
return sr.attach(self.params['sr_uuid'])
File "/opt/xensource/sm/LVMoHBASR", line 124, in attach
LVHDSR.LVHDSR.attach(self, sr_uuid)
File "/opt/xensource/sm/LVHDSR.py", line 309, in attach
self._checkMetadataVolume(self.sm_config)
File "/opt/xensource/sm/LVHDSR.py", line 201, in _checkMetadataVolume
self._synchMetaData(map)
File "/opt/xensource/sm/LVHDSR.py", line 211, in _synchMetaData
xml = metadata.retrieveXMLfromFile(self.mdpath)
File "/opt/xensource/sm/metadata.py", line 103, in retrieveXMLfromFile
_testHdr(hdr)
File "/opt/xensource/sm/metadata.py", line 41, in _testHdr
assert(hdr[2] <= MD_MAJOR)
[14279] 2012-12-22 22:50:51.357473 lock: closed /var/lock/sm/25b74c46-b305-c164-1070-6bf5abb49c5b/sr
[14451] 2012-12-22 22:50:51.373612 LVMCache created for VG_XenStorage-76c86946-ce7a-6690-ba60-2692a0b5e303
<14451> 2012-12-22 22:50:51.514441 Host f8b94db1-26eb-4bcb-96ac-293075c52204 not enabled
<14451> 2012-12-22 22:50:51.514677 Pool is not ready, exiting
<14451> 2012-12-22 22:50:51.514750 SR 76c8 ('NetApp 2.5TB 1st floor') (0 VDIs in 0 VHD trees): no changes
[14491] 2012-12-22 22:50:51.699425 LVMCache created for VG_XenStorage-c06d1738-f71a-4b4a-d7df-3685db30e2a8
[14491] 2012-12-22 22:50:51.708770 ['/usr/sbin/vgs', 'VG_XenStorage-c06d1738-f71a-4b4a-d7df-3685db30e2a8']
[14491] 2012-12-22 22:50:51.841909 SUCCESS
[14491] 2012-12-22 22:50:51.842105 lock: acquired /var/lock/sm/c06d1738-f71a-4b4a-d7df-3685db30e2a8/sr
[14491] 2012-12-22 22:50:51.842172 LVMCache: will initialize now
[14491] 2012-12-22 22:50:51.842218 LVMCache: refreshing
[14491] 2012-12-22 22:50:51.842288 ['/usr/sbin/lvs', '--noheadings', '--units', 'b', '-o', '+lv_tags', '/dev/VG_XenStorage-c06d1738-f71a-4b4a-d7df-3685db30e2a8']
[14491] 2012-12-22 22:50:51.921928 SUCCESS
[14491] 2012-12-22 22:50:51.922361 lock: released /var/lock/sm/c06d1738-f71a-4b4a-d7df-3685db30e2a8/sr
[14491] 2012-12-22 22:50:51.922611 lock: closed /var/lock/sm/c06d1738-f71a-4b4a-d7df-3685db30e2a8/sr
[14491] 2012-12-22 22:50:51.922684 LVMCache created for VG_XenStorage-c06d1738-f71a-4b4a-d7df-3685db30e2a8
[14491] 2012-12-22 22:50:51.932351 ['/usr/sbin/vgs', 'VG_XenStorage-c06d1738-f71a-4b4a-d7df-3685db30e2a8']
[14491] 2012-12-22 22:50:52.008071 SUCCESS
[14491] 2012-12-22 22:50:52.008258 lock: acquired /var/lock/sm/c06d1738-f71a-4b4a-d7df-3685db30e2a8/sr
[14491] 2012-12-22 22:50:52.008326 LVMCache: will initialize now
[14491] 2012-12-22 22:50:52.008371 LVMCache: refreshing
[14491] 2012-12-22 22:50:52.008442 ['/usr/sbin/lvs', '--noheadings', '--units', 'b', '-o', '+lv_tags', '/dev/VG_XenStorage-c06d1738-f71a-4b4a-d7df-3685db30e2a8']
[14491] 2012-12-22 22:50:52.147745 SUCCESS
[14491] 2012-12-22 22:50:52.148196 lock: released /var/lock/sm/c06d1738-f71a-4b4a-d7df-3685db30e2a8/sr
[14491] 2012-12-22 22:50:52.148327 lock: acquired /var/lock/sm/c06d1738-f71a-4b4a-d7df-3685db30e2a8/sr
[14491] 2012-12-22 22:50:52.148461 sr_attach {'sr_uuid': 'c06d1738-f71a-4b4a-d7df-3685db30e2a8', 'subtask_of': 'OpaqueRef:94fadc0d-5104-cea7-8f83-46c3f9ab1b5c', 'args': [], 'host_ref': 'OpaqueRef:a69330e3-757f-8ff5-6099-d397d54caf85', 'session_ref': 'OpaqueRef:e1791520-24a6-f91e-3670-373e4153111f', 'device_config': {'device': '/dev/disk/mpInuse/360a98000572d5038636f58795a6c3753', 'SCSIid': '360a98000572d5038636f58795a6c3753', 'SRmaster': 'true'}, 'command': 'sr_attach', 'sr_ref': 'OpaqueRef:ac0b5d46-1ac7-7051-83c0-d1e720b5779f'}
[14491] 2012-12-22 22:50:52.148766 lock: acquired /var/lock/sm/c06d1738-f71a-4b4a-d7df-3685db30e2a8/running
[14491] 2012-12-22 22:50:52.148830 lock: acquired /var/lock/sm/c06d1738-f71a-4b4a-d7df-3685db30e2a8/sr
[14491] 2012-12-22 22:50:52.158463 RESET for SR c06d1738-f71a-4b4a-d7df-3685db30e2a8 (master: True)
[14491] 2012-12-22 22:50:52.195078 lock: released /var/lock/sm/c06d1738-f71a-4b4a-d7df-3685db30e2a8/sr
[14491] 2012-12-22 22:50:52.195159 lock: released /var/lock/sm/c06d1738-f71a-4b4a-d7df-3685db30e2a8/running
[14491] 2012-12-22 22:50:52.195211 lock: closed /var/lock/sm/c06d1738-f71a-4b4a-d7df-3685db30e2a8/sr
[14491] 2012-12-22 22:50:52.195261 lock: closed /var/lock/sm/c06d1738-f71a-4b4a-d7df-3685db30e2a8/running
[14491] 2012-12-22 22:50:52.202113 set_dirty 'OpaqueRef:ac0b5d46-1ac7-7051-83c0-d1e720b5779f' succeeded
[14491] 2012-12-22 22:50:52.202177 MPATH: multipath activate called
[14491] 2012-12-22 22:50:52.202227 ['/opt/xensource/sm/mpathHBA', 'enable']
[14491] 2012-12-22 22:50:52.221720 SUCCESS
Have you checked the log files on your upgraded host?
You'll find the important ones here:
/var/log/messages
/var/log/xensource.log
You can use a tool like WinSCP to connect to the Dom0 and look at the content.
Check for any errors, especially around boot time, and post back.