Virtual machines hang during backup

Virtual machines hang during backup



Article Summary: This article provides information about virtual machines locking up during backups


Issue:

Virtual machines lockup or freeze when performing a backup of the Hyper-V host and virtual machines using Windows Server Backup. The issue can also occur using third-party backup programs. Event ID 27 volsnap and Event ID 3 Microsoft-Windows-FilterManager appear in the System event log. Follow the steps in the solution to resolve this issue.

Solution:

1. Create the following registry key.

Note: Backup the registry keys prior to adding or deleting entries. For instructions on backing up a registry key click here.

a. Press Windows Logo+R, type regedit and press Enter.




b. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Virtualization.



c. Right-click on Virtualization, click New and click DWORD (32-bit) Value.

d. Type VssRevertTimeout for the Value name.

e. Set the Value data to 360 (decimal).



2. Create the following registry key and reboot the server.

a. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SPP.



b. Right-click on SPP, click New and click DWORD (32-bit) Value.

c. Type CreateTimeout for the Value name.

d. Set the Value data to 12000000 (decimal).




Additional Information:

This information applies to Windows Server 2008 R2, Windows Server 2012 and Windows Server 2012 R2.

Hotfix 2182466 may need to be applied to a server running Windows Server 2008 R2.

The hotfix can be found here.

Event ID 27 volsnap is logged in the System event log.

Log Name: System
Source: volsnap
Date: 4/03/2014 9:00:12 AM
Event ID: 27
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: computername.domainname.local
Description:
The shadow copies of volume \\?\Volume{fb409183-e795-11e2-93f8-001018f512c7} were aborted during detection because a critical control file could not be opened.

Event ID 3 Microsoft-Windows-FilterManager is logged in the System event log.

Log Name: System
Source: Microsoft-Windows-FilterManager
Date: 4/03/2014 9:00:12 AM
Event ID: 3
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: computername.domainname.local
Description:
Filter Manager failed to attach to volume '\Device\HarddiskVolume236'. This volume will be unavailable for filtering until a reboot. The final status was 0xC03A001C.





Quick Tips content is self-published by the Dell Support Professionals who resolve issues daily. In order to achieve a speedy publication, Quick Tips may represent only partial solutions or work-arounds that are still in development or pending further proof of successfully resolving an issue. As such Quick Tips have not been reviewed, validated or approved by Dell and should be used with appropriate caution. Dell shall not be liable for any loss, including but not limited to loss of data, loss of profit or loss of revenue, which customers may incur by following any procedure or advice set out in the Quick Tips.

Article ID: SLN291054

Last Date Modified: 09/21/2019 01:17 PM


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