Errors discovered during backup of VHDS in guest clusters


Hi,

 

with Windows Server 2016 we introduced VHD Sets to create a shared virtual disk to be used with guest clusters. We also introduced production checkpoints to create application consistent backups.

Recently, I worked on a case where this may fail, and would like to share the Error codes and their reason:

 

Error code: '32768'. Failed to create checkpoint on collection 'Hyper-V Collection'

Reason: We failed to query the cluster service inside the Guest VM. Check that cluster feature is installed and running.

 

Error code: '32770'. Active-active access is not supported for the shared VHDX in VM group

Reason: The VHD Set disk is used as a Cluster Shared Volume. This cannot be checkpointed

 

Error code: '32775'. More than one VM claimed to be the owner of shared VHDX in VM group 'Hyper-V Collection'

Reason: Actually we test if the VHDS is used by exactly one owner. So having 0 owner also creates this error. The reason was that the shared drive was offline in the guest cluster

 

Hope this helps you to identify backup problems easier.

 

Cheers

Robert


Comments (0)

Skip to main content