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Knowledge Base

Disabling specific VSS writers with VMware Tools (1031200)

Last Updated: 3/18/2024Categories: How toTotal Views: 85706Language:
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Details

With vSphere 4.0, VMware introduced the ability to disable specificVSS writers for the benefit of troubleshooting a specific VSS writer issue.

If you experience an issue backing up a specific virtual machine using snapshot technology and you have identified an issue with a specific VSS writer within the virtual machine, this article explains how to disable that VSS writer from being called during a snapshot operation.

Solution

To disable a specific VSS writer being called during a snapshot operation:

Determine the name of the VSS writer that you want to exclude from the snapshot operation. Run this command from within Windows:

vssadmin list writers

Note: With Windows Vista, 7, and 2008 the command prompt may need to be run with administrator elevation.

You see output similar to:

Writer name: 'Task Scheduler Writer'
Writer Id: {d61d61c8-d73a-4eee-8cdd-f6f9786b7124}
Writer Instance Id: {1bddd48e-5052-49db-9b07-b96f96727e6b}
State: [1] Stable
Last error: No error

Note: The name of the VSS Writer is highlighted.

Microsoft documentation on the vssadmin utility can be found at http://technet.microsoft.com/en-us/library/cc754968%28WS.10%29.aspx

Create or edit the vmbackup.conf file which is located at %ALLUSERSPROFILE%\Application Data\VMware\VMware Tools\ .

Note: If the vmbackup.conf file does not exist then create it.

Place the name of the VSS writer you want to disable on a separate line. If you want to disable more than one VSS writer, ensure that you place each VSS writer name on a separate line. For example:

Task Scheduler Writer
NTDS
SqlServerWriter
Microsoft Exchange Replica Writer
Microsoft Exchange Writer

Restart the VMware Tools service.

When the writer issue has been resolved, you can remove the offending writer from the vmbackup.conf file.

Note: VMware does not provide these VSS writers. Engage the provider of the VSS writer to troubleshoot the writer issue to ensure application consistency with the writer.

Additional Information
For translated versions of this article, see:

日本語: VMware Tools を使用して、特定の VSS ライタを無効にするについて (2077147)

简体中文: 使用 VMware Tools 禁用特定 VSS 写入程序 (2078112)

Português: Como desabilitar gravadores VSS específicos com o VMware Tools (2130173)

Español: Deshabilitar escritores VSS específicos con VMware Tools (2130300)

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