Date – 03/2010
Affected Product & Version – NetVault: Backup 8.x
Affected Module & Version – VMware APM 1.x
OS Version – VM guest OS Windows 2003
Application Information – n/a
Description:
One of the many ways that a Virtual Machine can fail to quiesce during a VMware plugin backup can be due to OS issues on the VM. In this example, there is an inconsistency when attempting to contact shadow copy service writers.
Symptoms:
The backup for the VM will show the following 2 job messages for the problem VM:
Proceeding to quiesce the guest within VM '[VM name]' uuid ‘[uuid]’
Guest quiesced successfully = FALSE
Failed to quiesce the guest within VM '[VM name]' uuid ‘[uuid]’
The context for the “Guest quiesced successfully = FALSE� message shows:
[date] Calling SetBackupState()
[date] Calling SetContext()
[date] Error in c:\veena\GENUS_2009APR20_802214\nvappsnap\nvappsnap.cpp(203). Call gpComBackupComponents->SetContext(VSS_CTX_BACKUP) returned <Unknown> (0x8000ffff)
[date] Failed to complete!
One of the functions of nvappsnap.cpp is to access the shadow copy service writers. In this situation, manually running the command “vssadmin list writers� on the VM will also result in the error (0x8000ffff).
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