Help for VSS - HyperV - WindowsBackup, please

Discussion in 'Windows Server' started by T.M. Taglicht, Aug 25, 2009.

  1. Hi,

    I would appreciate some help for an issue with VSS - HyperV - WindowsBackup

    What happened:
    - Had 2 Hyper-v servers w2k8 with several VM's on them, backed-up with
    Windows Backup.
    - Updated all Hosts and VM's to W2k8-R2.
    - On 1 server WB runs fine.
    - On 1 server WB does not backup the volume containing the VM's, only if
    they are stopped, even so, in the Hyper-v console, the VSS shadow copies
    - The error is that the writer (hyper-v) cannot create the shadow copies.
    "The backup operation that started at '‎2009‎-‎08‎-‎24T10:01:21.706000000Z'
    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." (there is no more

    What I did:
    - Recreated all VM's by using the existing VHD's only.
    - Resinstalled Hyper-v
    - Tried to remove all shadow copies: "C:\>vssadmin delete shadows /All".
    Got :
    "vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
    (C) Copyright 2001-2005 Microsoft Corp.

    Error: Snapshots were found, but they were outside of your allowed context.
    Try removing them with the backup application which created them."

    I'm stucked here....
    I do not know how to use WBadmin to remove the shadows nor if I'm on a good
    path to troubleshoot this.

    Thanks in advance.

    T.M. Taglicht, Aug 25, 2009
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  2. I try to make it shorter...

    On windows server 2008-r2,

    Windows Backup DO backup the volume on which are Hyper-v VM's, if they are
    Windows Backup DO NOT backup the volume on which are Hyper-v VM's, if they
    are RUNNING (1 or more).
    T.M. Taglicht, Aug 29, 2009
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  3. Meinolf Weber [MVP-DS], Aug 29, 2009
  4. T.M. Taglicht


    Oct 6, 2011
    Likes Received:
    Use diskshadow.exe command to delete shadows that were created by Windows Server Backup (WB)

    C:\> diskshadow
    Microsoft DiskShadow version 1.0
    Copyright (C) 2007 Microsoft Corporation

    DISKSHADOW> delete shadows all

    jskondel, Oct 6, 2011
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