We have an Hyper-v server that some of its Vm's as part of our disaster recovery replicate to Azure.
All of the VM's show an green checkmart for the replication execpt one of them. When check the logs on this server 2012 We see these warning and errors each time this server replicate to Azure:
Checkpoint operation for 'Servername' failed. (Virtual machine ID XXXX-XXXX-XXXXX-XXXXX-XXXXX)
Replication operation for virtual machine 'Servernaame' failed: The writer experienced a non-transient error. If the backup process is retried, the error is likely to reoccur. (0x800423F4). (Virtual machine ID XXXX-XXXX-XXXXX-XXXXX-XXXXX) (Primary server: Host.domain.local', Replica server: 'Microsoft Azure')
Hyper-V failed to generate VSS snapshot set for virtual machine 'Servernaame': The writer experienced a non-transient error. If the backup process is retried, the error is likely to reoccur. (0x800423F4). VSS snapshot set generation can fail if backup operation is in progress. (Virtual machine ID XXXX-XXXX-XXXXX-XXXXX-XXXXX)
Any suggestion on what this means?
Can you check if there still are checkpoints present (differencing disks) present at the locations where the VHD's are located for the VM? There is a posibility that they are but don't show up in Hyper-V manager. These could prevent the replica from succeding since it uses checkpoints to capture the current state of the VM for replication
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