We recently upgraded the firmware on one of our storage systems and encountered a serious issue. Prior to the update we shut down all the VM's stored on the system to be upgraded and then performed the update. Please note that the ESX hosts (v3.5) also run VM's stored on a separate array so these were not shut down. Connectivity is FC.
Following the firmware upgrade on the storage array the LUNS were rescanned and discovered happily. Next one of the VM's was powered back on. It hung at Windows 2003 startup citing a corrupted registry hive. In all seven out of eight VM's did the same sort of thing due to file corruption of one sort or another. Seven of the OS's were Windows, one Linux. Only one Windows server started properly and appears to have no issues.
The storage array has no errors from the firmware update and no RAID errors. ESX does not have any errors with VMFS or anything else for that matter. Only the guest file systems seem corrupted.
Does anyone have any suggestions?
Thanks
