I have windows server 2008 r2 installed, Only service running on it is hyper-v.
I am trying to take backup using windows server backup feature and it fails with following error in eventlog
The backup operation that started at '?2009?-?08?-?22T18:42:14.123000000Z' has failed because the Volume Shadow Copy Service operation to create a shadow copy of the volumes being backed up failed with following error code '2155348129'. Please review the event details for a solution, and then rerun the backup operation once the issue is resolved.
Above error itself is point to other event logs for more detail but i can't find anything in event logs
Then i ran following command
vssadmin list writers
It had following out of ordinary in list
Writer name: 'Microsoft Hyper-V VSS Writer'
Writer Id: {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de}
Writer Instance Id: {d15c5f78-121c-464f-b23b-f285e919b05c}
State: [8] Failed
Last error: Inconsistent shadow copy
How could i resolve this?
Best Answer
Do any of the VMs you're trying to back up contain dynamic disks? (That's in disk management within the VM, dynamic disks as opposed to basic disks. Not dynamically expanding VHDs)
To quote Microsoft: