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Netbackup failing to create snapshot of Windows 2k8 VM

Hi,

I'm hoping someone can offer some advice regarding an issue I'm having trying to back up a Windows VM via a Flashbackup policy. For the past few days (no issues previously) this backup has been failing with error 156. The Netbackup log shows the following;

 

05/12/2013 20:00:10 - snapshot backup of client WNRYDAP22 using method VMware
05/12/2013 20:06:42 - Critical bpbrm (pid=7612) from client WNRYDAP22: FTL - VMware snapshot failed: SYM_VMC_TASK_REACHED_ERROR_STATE
05/12/2013 20:06:42 - Critical bpbrm (pid=7612) from client WNRYDAP22: FTL - VMware error received: A snapshot operation cannot be performed.
05/12/2013 20:06:43 - Critical bpbrm (pid=7612) from client WNRYDAP22: FTL - snapshot processing failed, status 156
05/12/2013 20:06:43 - Critical bpbrm (pid=7612) from client WNRYDAP22: FTL - snapshot creation failed, status 156
05/12/2013 20:06:43 - Warning bpbrm (pid=7612) from client WNRYDAP22: WRN - ALL_LOCAL_DRIVES is not frozen
05/12/2013 20:06:44 - end writing
 
In Vcenter I can see that there is now a lot of broken snapshot files for the VM
 
In the VM itself, I can see a few MSSQLSERVER, SQLVDI & SQLWRITER errors logged each time the backup snapshot is attempted, such as;
 
SQLVDI: Loc=SignalAbort. Desc=Client initiates abort. ErrorCode=(0). Process=2024. Thread=4608. Client. Instance=. VD=Global\{1CAC5E8E-C90D-4C21-B680-DF61C805FCDC}2_SQLVDIMemoryName_0. 
 
BACKUP failed to complete the command BACKUP DATABASE model. Check the backup application log for detailed messages.
 
BackupVirtualDeviceFile::SendFileInfoBegin:  failure on backup device '{1CAC5E8E-C90D-4C21-B680-DF61C805FCDC}4'. Operating system error 995(failed to retrieve text for this error. Reason: 15100).
 
Sqllib error: OLEDB Error encountered calling ICommandText::Execute. hr = 0x80040e14. SQLSTATE: 42000, Native Error: 3013
Error state: 1, Severity: 16
Source: Microsoft SQL Server Native Client 10.0
Error message: BACKUP DATABASE is terminating abnormally.
SQLSTATE: 42000, Native Error: 3271
Error state: 1, Severity: 16
Source: Microsoft SQL Server Native Client 10.0
Error message: A nonrecoverable I/O error occurred on file "{1CAC5E8E-C90D-4C21-B680-DF61C805FCDC}3:" 995(failed to retrieve text for this error. Reason: 15100).
SQLSTATE: 01000, Native Error: 4035
Error state: 1, Severity: 0
Source: Microsoft SQL Server Native Client 10.0
Error message: Processed 0 pages for database 'ECR', file 'ECR' on file 1.
 
When I run vssadmin list writers, I can see that the SQL Writer is in state failed, timed out. This is the same for the WMI writer & System writer.
 
The VM has been restarted, and I've tried various things, such as disabling the SQL writer without luck.
 
Any help would be greatly appreciated.
 
Thanks
 
 
 
 
1 Reply

Can you take snapshot of VM

Can you take snapshot of VM from vCenter?
Have you already tried VMware policy in stead of FlashBackup-Windows policy? If never, try it.
Also try to remove all VM snapshot and retry backup.

There are some relevant Technotes and post. 

https://www-secure.symantec.com/connect/forums/issue-backing-vmware-windows2008-server-machine
http://www.symantec.com/docs/TECH183518
http://www.symantec.com/docs/TECH154085