Date â€“ 01/10
Affected Product & Version â€“ NetVault: Backup 8.5 and greater
Affected Module & Version â€“ VMware APM 1.1 and greater
OS Version â€“ Windows Virtual Machine
Application Information â€“ VMware ESX 3.5 and greater
When performing a VSS quiesce of a Virtual machine prior to backup, a problem on the guest can potentially cause the quiesce to error.
- The backup log shows the following error:
Failed to quiesce the guest within VM 'vm_name' uuid â€˜xxx'
- The context of this message contains the following:
Proceeding to execute 'C:\nvappsnap.exe' inside guest on VM to quiesce it
Running program 'C:\WINDOWS\system32\cmd.exe /c "C:\nvappsnap.exe" /debug > C:\vmwguestcmd.log' within guest vm
Successfully ran program 'C:\nvappsnap.exe' on guest vm
Program exited with code: 2
- The backup log also shows the following job message:
Guest quiesced successfully = FALSE
- The context of which is the output of the nvappsnap.exe command:
Error in c:\[path]\nvappsnap\nvappsnap.cpp(203). Call gpComBackupComponents->SetContext(VSS_CTX_BACKUP) returned <Unknown> (0x8000ffff)
0x8000ffff is a windows return code, indicating that an internal inconsistency was detected when trying to contact shadow copy service writers.
The following Microsoft Knowledge base article covers a solution to the Virtual Machineâ€™s problem: