Hi

I have a Windows 2012 R2 Hyper-V server. It runs a Windows 2012 R2 VM (called server-1).

I want to backup the VM to a network location (\\network-1\server-1_backup$). To do this, I installed Windows Server Backup from the command line and configured a backup to look like this:

C:\Users\admin>wbadmin enable backup
wbadmin 1.0 - Backup command-line tool
(C) Copyright 2013 Microsoft Corporation. All rights reserved.

The scheduled backup settings:

Bare metal recovery : Not Included
System state backup: Not Included
Volumes in backup: (null)
Components in backup: HyperV\server-1
Files excluded: (null)
Advanced settings: VSS Backup Option (FULL)
Location to store backup: \\network-1\server-1_backup$\
Times of day to run backup: 04:00

 

But when I run this backup manually, I get the following error:

C:\Users\admin>wbadmin start backup
wbadmin 1.0 - Backup command-line tool
(C) Copyright 2013 Microsoft Corporation. All rights reserved.

Do you want to create a backup using the same configuration that you use for scheduled backups?
[Y] Yes [N] No y

The backup operation to Scheduled backup target is starting.
Creating a shadow copy of the volumes specified for backup...
Summary of the backup operation:
------------------

The backup operation stopped before completing.
The backup operation stopped before completing.
Detailed error: A component critical volume failed to snapshot.
Log of files successfully backed up:
C:\Windows\Logs\WindowsServerBackup\Backup-23-02-2015_08-49-55.log

Log of files for which backup failed:
C:\Windows\Logs\WindowsServerBackup\Backup_Error-23-02-2015_08-49-55.log

ERROR - The shared restore point operation failed with error (0x8100010c)
No valid component or volume to snapshot.

A component critical volume failed to snapshot.

 

The log file then looks like this:

Writer Failures
Writer Id: {66841CD4-6DED-4F4B-8F17-FD23F8DDC3DE}
Instance Id: {3976D373-854E-4527-B85D-7B61924C8597}
Writer Name: Microsoft Hyper-V VSS Writer
Writer State: 0
Failure Result: 81000112
Application Result: 0
Application Message: (null)
   Component: 1DAF1C56-0635-4043-A933-E97A62EBC139
   Logical Path:
   Component Result: 8100010D
   Component Message: Component reports path on network share which cannot be snapshotted. (0x8100010D)
   Component: 30144C93-56A2-4259-B276-86D59AC767E9
*-----------------------------*
Application backup
Writer Id: {66841CD4-6DED-4F4B-8F17-FD23F8DDC3DE}
   Component: 1DAF1C56-0635-4043-A933-E97A62EBC139
   Caption     : Offline\server-1
   Logical Path:
   Error           : 8078001D
   Error Message   : The operation ended before completion.

The odd thing is that if I set this up from a Windows 2012 Server using the GUI to exactly the same network destination, the backup works no problem. It just doesn't work when using Server 2012 R2 Hyper-V configured through a command line.

Any help appreciated,

Andrew

• Edited by agvonline 2 hours 19 minutes ago