VMware SAN restore fails with "Failed to restore VM disk data" , "Failed to write to disk" (4046195)

When restoring a successful VMware backup in SAN we see the backup fail with "Failed to restore VM disk data" and a subtext of "Failed to write to disk (start sector=149467136, number of sectors=128)".


From binary log


Error 2011/02/04 09:46:09 221 Data Plugin SRVNETVAULT Failed to restore VM disk data


From subtext of binary log


Module/Thread Id Code Time Message
VMWUTIL :03672 10 0 90939 Logout success=TRUE
VMWCFG :03672 48 0 90939 Have 2 transport modes
VDDK :03672 141 0 90939 Remote connect done
VDDK :03672 145 0 90940 Disk opened successfully
VDDK :03672 100 0 90940 Disk '[SASLANSYS_01] temposrvora.eauap.com/temposrvora.eauap.com.vmdk' opened using mode 'san'
VDDK :03672 49 0 94609 Failed to write disk data
VDDK :03672 138 0 94609 VDDK error encountered: code 1
VDDK :03672 139 0 94609 Retrieving error message text
VDDK :03672 52 0 94609 VDDK error message is 'Unknown error'
VMWRESTR:03672 164 0 94609 Failed to write to disk (start sector=149467136, number of sectors=128)
VMWRESTR:03672 167 0 94609 Processed 149467136 sectors
VDDK :03672 146 0 94609 Disk closed successfully
VMWRESTR:03672 437 0 94609 Disk data restore failed for '[SASLANSYS_01] temposrvora.eauap.com/temposrvora.eauap.com.vmdk'



trace from later failurre of same backup

5 PLGLIB 5824 277 0 132320459686 Making 32768 bytes availble. Read position 76528189440
6 PLGLIB 5824 476 0 132320459686 Restore stream at 76528189440
5 DYNLIB 5824 12 0 132320459686 03053A70 = GetDynamicLibFunctionAddress. FunctionName = VixDiskLib_Write
0 VDDK 5824 49 0 132320490886 Failed to write disk data
0 VDDK 5824 138 0 132320490886 VDDK error encountered: code 1
5 DYNLIB 5824 12 0 132320490886 030543B0 = GetDynamicLibFunctionAddress. FunctionName = VixDiskLib_GetErrorText
5 DYNLIB 5824 12 0 132320490886 030582C0 = GetDynamicLibFunctionAddress. FunctionName = VixDiskLib_FreeErrorText
2 VDDK 5824 139 0 132320490886 Retrieving error message text
0 VDDK 5824 52 0 132320490886 VDDK error message is 'Unknown error'
0 VMWRESTR 5824 164 0 132320490886 Failed to write to disk (start sector=149467136, number of sectors=128)
2 VMWRESTR 5824 167 0 132320490886 Processed 149467136 sectors
6 VDDK 5824 39 0 132320490886 Closing disk
5 DYNLIB 5824 12 0 132320490886 030539A0 = GetDynamicLibFunctionAddress. FunctionName = VixDiskLib_Close
2 VDDK 5824 146 0 132320537684 Disk closed successfully
0 VMWRESTR 5824 437 0 132320537684 Disk data restore failed for '[SASLANSYS_01] temposrvora.eauap.com/temposrvora.eauap.com.vmdk'
5 LOGGING 5824 9 0 132320537684 Found context object!
5 LOGGING 5824 13 0 132320537684 Processed 0 args, size of 0 bytes.
5 LOGGING 5824 14 0 132320537684 'Failed to restore VM disk data'