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.
Event Xml:
<Event xmlns="http://schemas.micr
<System>
<Provider Name="Microsoft-Windows-Ba
<EventID>521</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x80000000000000
<TimeCreated SystemTime="2009-06-23T14:
<EventRecordID>363</EventR
<Correlation />
<Execution ProcessID="3444" ThreadID="3628" />
<Channel>Application</Chan
<Computer>HQHYV-P01.leco.c
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="BackupTime">2009-06-
<Data Name="ErrorCode">215534812
<Data Name="ErrorMessage">%%2155
</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-f
Writer Instance Id: {044a478f-a021-4246-a761-9
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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I did not read that the registry hack to enable Hyper-V for Windows Backup needed to be performed on the host server and all of the virtual servers. I thought I only had to add this registry change to the HOST server... is this not true? When I run the vssamin list writers command on the virtual servers the Hyper-V VSS Writer is not even listed.
http://www.virtualization.
What other server roles are you running on this server 2008r2 ?
Also, can you get the event id and source from your event log, not the whole text just the id.
Also check this link : http://social.technet.micr
But before marking a partition active or either be careful as you may get an unbootable volume
I will try to re-create the scenario once you have more details, have you got any sql instance running on this server,? which device u are targetting the backup to ?
2: Virtual machines that do not have support for VSS Backups, such as Windows 2000, Windows XP, or virtual machines without Integration Services installed, will enter a saved state while the snapshot is taken and restore once the snapshot is complete. You will also experience the same behavior if the backup component from Hyper-V Integration Services is disabled as shown below
check the link above to see if you have the same settings.
Thanks for your assistance! All the links you have provided I have followed prior to my post. The event in the event log is posted on my origianl post, but here it is again. Do you know if I need to add the registry hack to each virtual machine or only to the host server to enable Hyper-V for backups? This link does not specify... http://support.microsoft.c
Log Name: Application
Source: Microsoft-Windows-Backup
Date: 6/23/2009 10:40:02 AM
Event ID: 521
Task Category: None
Level: Error
Keywords:
User: SYSTEM
Computer: HQHYV-P01.leco.com
Description:
The backup operation that started at '2009-06-23T14:38:11.
Hi,
You have to register the Hyper-V VSS Writer on the Hyper-V Box not in every VM.
http://www.virtualizati
A good explanation and procedure is given on the above link which you can go through to double check your setup.
Actually, I haven't used WSB to backup VMs myself, but I use symantec backup exec 12.5 with virtual agents installed and it automatically select the vss provider and does it ;
I will still keep looking with some friends who are using this and will update as n when I have, meanwhile If you are re-installing let me know what happens.
Kind Regards
Business Accounts
Answer for Membership
by: mutahirPosted on 2009-06-24 at 12:03:37ID: 24704563
vssadmin list writers
type this command and see the status of vss writer on all The server and all the virtual servers you are trying to backup
try restarting the hyper v virtual machine management service and see if that stables the vss writer ;