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Question
Wednesday, July 19, 2017 1:31 AM
Hi there
Continuing on this issue: https://social.technet.microsoft.com/Forums/en-US/2843ba53-ceee-4de2-885f-307f74647d77/troubleshooting-on-microsoft-hyperv-vss-writer-the-writer-experienced-a-partial-failure?forum=windowsbackup
We managed to make ONE of the VM backup as well HyperV backup working. However we still have 2 VMs (ExAxSYDVAP03 and Wxn_Ix9) that we can't them backup.
We found missing permissions and we've added "NT VIRTUAL MACHINES\Virtual Machines" as well as "NT VIRTUAL MACHINES\VM-GUID" on each Virtual Machines folder and still not working either. We believe it's something to do with permission.
Environment:
* 2 nodes running on Windows Server 2012 R2. We are running cross-over VM replication between these 2 nodes. Each node has its own storage - no SAN.
* The Hyper-V and VM backups is pointing to USB portable device.
* USB portable device is apart of Disk 2 Basic appearing in Disk Management (Disk 0: primary physical disk partition, Disk 1: Mini disk storage - 18GB)
Error Details:
Windows Logs/Application
Level: Error
Writer Microsoft Hyper-V VSS Writer experienced some error during snapshot creation. More info: .
Source: SPP
Event ID: 16387
Application and Services Logs/Windows/Hyper-V-VMMS/Admin
Level: Error
Checkpoint operation for 'ExAxSYDVAP03' failed. (Virtual machine ID 4BAF6B4B-D064-4178-B907-EC93ED5FCE01)
Source: Hyper-V-VMMS
Event ID: 18012
Level: Error
Could not create backup checkpoint for virtual machine 'ExAxSYDVAP03': General access denied error (0x80070005). (Virtual machine ID 4BAF6B4B-D064-4178-B907-EC93ED5FCE01)
Source: Hyper-V-VMMS
Event ID: 10150
Level: Error
Checkpoint operation for 'Wxn7_Ix9' failed. (Virtual machine ID ABD35D40-FC1C-4984-985B-F6993FF892AD)
Source: Hyper-V-VMMS
Event ID: 18012
Level: Error
Could not create backup checkpoint for virtual machine 'Wxn7_Ix9': General access denied error (0x80070005). (Virtual machine ID ABD35D40-FC1C-4984-985B-F6993FF892AD)
Source: Hyper-V-VMMS
Event ID: 10150
Any ideas?
Thank you
Valdy
Isadewa
All replies (4)
Thursday, July 20, 2017 11:39 PM ✅Answered
Hi Mary
We found the work around for this issue by Moving the VM into a different folder temporarily and once it's moved delete the VM folders (ie. name of the VM, virtual hard disk, virtual machines, snapshots). Then you create a new folder of the VM original name and then you run another Move VM into this location.
It seems by doing the move it resets the permission etc etc.
We wrote a blog about this finding in more detail - http://www.dewacorp.com/integration-services/troubleshooting-on-virtual-machine-vm-backup-using-windows-backup-wbadmin/
Valdy
Wednesday, July 19, 2017 4:58 AM
Hi Valdy,
Please first make sure you have enough disk space to complete the operation, please also check the checkpoint folder in the VM settings.
Here is the blog for more details.
And in addition, please also take a look at the article below.
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information. And if it involved the 3rd party software, please contact the software vendor.
Best Regards,
Mary
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Wednesday, July 19, 2017 5:08 AM
Hi Mary
In regards to enough disk space to complete the operation, are you referring this to our USB backup device that we used for the backup OR something else???
For the Checkpoint, we couldn't run the Checkpoint on the VMs that having backup issues :
An Error occured while attempting to checkpoint the selected Virtual Machine(s). Checkpoint operation failed. Checkpoint operation for 'Wxn_Ix9' failed (Virtual Machine ID XXXXXXXXXXXXXX).
Please note that we don't use any external backup - just pure Windows Backups.
Valdy
Thursday, July 20, 2017 8:25 AM
Hi Valdy Valdy，
Sometimes, the failure backup checkpoint may related to that you have not enough disk space on the volume to perform the VSS.
And according to your error message, checkpoint failure problem. Please check that you can manually checkpoint/snapshot the VM while it is running.
In Hyper-V Manager or in PowerShell, force a checkpoint on the VM and then delete it and wait for it to merge back. If this works, you are not having a physical VSS issue. If it fails, you need to troubleshoot this and not the WSB error.
Best Regards,
Mary
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