Situation:
4 node Windows Server 2012r2 Hyper-v cluster
Multiple 2008r2 VM's
Altaro software for back-up (using microsoft VSS)
Problem:
When taking a back-up a snapshot is created, however some of my machines goes offline when taking a snapshot.
On the Hypervisor hosting the problematic VM, I did a list writers on diskshadow.
The problematic machine writer:
+ Component "Microsoft Hyper-V VSS Writer:\DA52EBB1-2B79-4B6C-8B2B-FA4AE1EF5125"- Name: DA52EBB1-2B79-4B6C-8B2B-FA4AE1EF5125
- Logical path:
- Full path: \DA52EBB1-2B79-4B6C-8B2B-FA4AE1EF5125
- Caption: Offline\***VMMACHINENAME***
- Type: VSS_CT_FILEGROUP [2]
- Is selectable: TRUE
- Is top level: TRUE
- Notify on backup complete: FALSE
- Paths affected by this component:
- C:\ClusterStorage\volume1\**VMMACHINEFOLDER**\Snapshots
- C:\ClusterStorage\volume1\**VMMACHINEFOLDER**\Snapshots\39EEB8E5-1A9E-4567-A601-AABB9ADB70A8
- C:\ClusterStorage\volume1\**VMMACHINEFOLDER**\Virtual Machines\
- C:\ClusterStorage\volume1\**VMMACHINEFOLDER**
- C:\ClusterStorage\volume1\**VMMACHINEFOLDER**\
- Volumes affected by this component:
- \\?\Volume{69c711bd-3fa9-4eeb-b687-e8dddea5b453}\ [C:\ClusterStorage\Volume1\]
- Component Dependencies:
The option on Caption says: OFFLINE
I checked the following things;
http://support.altaro.com/customer/portal/articles/808575-what-are-the-requirements-for-live-backups-of-a-hyper-v-guest-vm-
All steps in the document are OK.
How can I troubleshoot this problem?