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6.8

Hyper-V VSS Writer Error

Asked by lecomm in Hyper-V, Microsoft Operating Systems

Tags: Windows Backup, Hyper-V, 2008 R2

I am trying to enable Windows Backup on Server 2008 R2 to backup my Hyper-V clients.  I have taken care of modifying the registry to support the Hyper-V VSS Writer (added the GUID to the registry).  When I run a backup of the volume that has the Hyper-V files, I get the following in the event log:
Log Name:      Application
Source:        Microsoft-Windows-Backup
Date:          6/23/2009 10:01:50 AM
Event ID:      521
Task Category: None
Level:         Error
Keywords:      
User:          SYSTEM
Computer:      HQHYV-P01.leco.com
Description:
The backup operation that started at '2009-06-23T14:00:00.573000000Z' 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.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Backup" Guid="{1DB28F2E-8F80-4027-8C5A-A11F7F10F62D}" />
    <EventID>521</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2009-06-23T14:01:50.915240100Z" />
    <EventRecordID>363</EventRecordID>
    <Correlation />
    <Execution ProcessID="3444" ThreadID="3628" />
    <Channel>Application</Channel>
    <Computer>HQHYV-P01.leco.com</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="BackupTime">2009-06-23T14:00:00.573000000Z</Data>
    <Data Name="ErrorCode">2155348129</Data>
    <Data Name="ErrorMessage">%%2155348129</Data>
  </EventData>
</Event>

When I run "vssadmin list writers" command I get the following error on the Hyper-V VSS Writer (all other Writers are error free):
Writer name: 'Microsoft Hyper-V VSS Writer'
   Writer Id: {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de}
   Writer Instance Id: {044a478f-a021-4246-a761-9f0b432b592b}
   State: [5] Waiting for completion
   Last error: Unexpected error

I have re-started the server and get the same errors.  Anyone got any suggestions?  I have spent hours searching and the only hit I can find that I followed was that this could be because the OS volume is not marked "active".  I found that Windows Server 2008 R2 creates a "System Restore" partition and marks that "active".  I changed it so that my C: drive is Active and that did not fix it.  
 
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Keywords: Hyper-V VSS Writer Error
 
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[+][-]07/06/09 09:40 AM, ID: 24786883Accepted Solution

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About this solution

Zones: Hyper-V, Microsoft Operating Systems
Tags: Windows Backup, Hyper-V, 2008 R2
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Solution Provided By: lecomm
Participating Experts: 1
Solution Grade: A
 
[+][-]06/24/09 12:03 PM, ID: 24704563Expert Comment

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[+][-]06/25/09 06:48 AM, ID: 24711330Expert Comment

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[+][-]06/27/09 03:45 PM, ID: 24729506Expert Comment

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[+][-]06/29/09 12:08 PM, ID: 24739116Author Comment

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[+][-]06/30/09 02:12 AM, ID: 24743517Expert Comment

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