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Knowledge Base

Troubleshooting Volume Shadow Copy (VSS) quiesce related issues (1007696)

Last Updated: 4/5/2021Categories: TroubleshootingTotal Views: 637825Language:
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Learn how VMware Skyline Advisor and Skyline Health Diagnostics work together to provide proactive intelligence and self-service log analysis.

Use Skyline Advisor to avoid issues before they occur across VCF, vSphere, vSAN, NSX, vROps & Horizon. Skyline Findings are based on top KBs, VMSAs/CVEs and design best practices.

Use Skyline Health Diagnostics to root cause vSphere & vSAN logs when an issue occurs. Skyline Health Diagnostic Findings are based on top KBs and VMSA/CVEs. You can use the Skyline Health Diagnostics tool in online or offline mode.

If you require additional help from technical support, please use Skyline Advisor to initiate a Log Assist to reduce time to upload logs. TSEs can also initiate logs to reduce effort.

Details

When quiescing a guest operating system using the Microsoft Volume Shadow Copy Service (VSS) prior to a snapshot, the operation fails

You see one of these errors:

Cannot create a quiesced snapshot because the snapshot operation exceeded the time limit for holding off I/O in the frozen virtual machine

An error occurred while quiescing the virtual machine. The error code was: 4 The error was: Quiesce aborted

In the Event Viewer Application logs of the Windows Virtual Machine, you see errors similar to:

Event ID 11

Event ID 12292

Event ID 12032

Event ID 12298

The Event ID errors contain descriptions similar to:

Volume Shadow Copy Service information: The COM Server with CLSID {<GUID>} and name <name> cannot be started. [<error code>].

Solution

Background Information

VMware products may require file systems within a guest operating system to be quiesced prior to a snapshot operation for the purposes of backup and data integrity.

VMware products which use quiesced snapshots include, but are not limited to, VMware Consolidated Backup and VMware Data Recovery.

As of ESX 3.5 Update 2, quiescing can be done by Microsoft Volume Shadow Copy Service (VSS), which is available in Windows Server 2003.

Operating systems which do not have VSS make use of the SYNC driver for quiescing operations. When VSS is invoked, all VSS providers must be running. If there is an issue with any third-party providers or the VSS service itself, the snapshot operation may fail.

Before verifying a VSS quiescing issue, ensure that you are able to create a manual non-quiesced snapshot using the vSphere Snapshot Manager. For more information, see Troubleshooting issues when creating or committing snapshots in ESX/ESXi (1038963).

Troubleshooting Steps

Note: These steps may vary depending on the operating system.

Ensure that you meet all of the pre-requisites of VSS when quiescing guest operating systems:

Verify that you are running ESX 3.5.0 Update 2 or higher.

Verify that the latest version of VMware Tools is installed on the virtual machine. VSS components must be explicitly specified during the VMware Tools upgrade process. VSS is not installed in non-interactive mode. For more information, see Verifying a VMware Tools build version (1003947).

Ensure that you are using Windows Server 2003 or higher. Previous versions of Windows, such as Windows XP and Windows 2000, do not include VSS and rely on the SYNC driver.

Ensure that all the appropriate services are running and the startup types are listed correctly:

Note: With the exception of the VMware Snapshot Provider service, all services listed below are Microsoft services bundled with the operating system. If you are having difficulty starting these services, consult Microsoft support before proceeding with the troubleshooting steps.

During the installation of VMware Tools (this is required to install the VMware Snapshot Provider Service):

Ensure that the COM+ System Application service is listed as Started and that the startup type is listed as Manual.

Ensure that the COM+ Event System service is listed as Started and that the startup type is listed as Automatic.

While Idle:

Ensure that the COM+ System Application is listed as Started and that the startup type is listed as Manual.

Ensure that the COM+ Event System service is listed as Started and that the startup type is listed as Automatic.

Ensure that the Volume Shadow Copy service is not running and the startup type is listed as Manual.

The Microsoft Software Shadow Copy Provider service may or may not be started. Ensure that the startup type is listed as Manual.

Ensure that the VMware Snapshot Provider is not running and that the startup type is listed as Manual.

During the backup:

Ensure that the COM+ System Application is listed as Started and that the startup type is listed as Manual.

Ensure that the COM+ Event System service is listed as Started and that the startup type is listed as Automatic.

The Volume Shadow Copy service may or may not be started. Ensure that the startup type is listed as Manual.

Ensure that the Microsoft Software Shadow Copy Provider service startup type is listed as Manual.

Ensure that the VMware Snapshot Provider is listed as Started and that the startup type is listed as Manual.

Ensure that the Virtual Disk is listed as Started and that the startup type is listed as Manual.

Make sure that you are using the Microsoft Software Shadow Copy provider:

Click Start > Run.

Type cmd and press Enter to open a command prompt.

Note: You may need to run this as administrator.

Check the VSS Providers with this command:

C:\Users\Workstation> vssadmin list providers

The output appears similar to this:

Provider name: 'Microsoft Software Shadow Copy provider 1.0'

Provider type: System

Provider Id: {b5946137-7b9f-4925-af80-51abd60b20d5}

Version: 1.0.0.7

Check the permissions on the VSS and on any third party VSS providers and ensure that the account is valid. For more information, see the Microsoft Knowledge Base article 259733.

If you have a third-party provider, it may interfere with the quiescing operation. Try uninstalling any third-party VSS providers.

Note: The vssadmin utility and VSS are bundled with the Microsoft operating system. If the vssadmin utility is reporting errors, this may indicate that you may have a pre-existing issue with the VSS. Consult Microsoft support before proceeding with the next troubleshooting steps.

Ensure that all of the VSS writers are stable and that they are not reporting an error. Run this command:

C:\Users\Workstation> vssadmin list writers

The output for each writer appears similar to this:

Writer name: 'VSS Metadata Store Writer'

Writer Id: {75dfb225-e2e4-4d39-9ac9-ffaff65ddf06}

Writer Instance Id: {088e7a7d-09a8-4cc6-a609-ad90e75ddc93}

State: [1] Stable

Last error: No error

Ensure that the State is Stable and that the last line of the output is Last error: No error.

If the issue persists, perform these troubleshooting steps:

Run NTBackup and see if there are VSS errors when NTBackup attempts to run.

Try reinstalling VMware Tools to re-register VSS.

If you are having difficulty backing up information from specific applications such as Microsoft Exchange, Microsoft SQL, and Active Directory, ensure that all necessary VSS writers are also installed with these components.

Engage Microsoft support to ensure that there are no known issues with VSS. Visit http://support.microsoft.com/ to see if there are any patches and updates for VSS.

Ensure that the time is accurate in the guest operating system and validate that it is being synchronized via NTP or VMware Tools.

Notes:

In Windows 2000, XP, and 2003, you can reinstall VMware Tools in custom mode and choose not to install VSS. This results in the SYNC driver being used.

The Distributed Transaction Coordinator service must be running while installing VMware Tools. Otherwise, VSS fails to quiesce Windows 2008 R2/ Windows 2012.

Additional Information

For more information, see:

Disabling specific VSS writers with VMware Tools (1031200)

How Volume Shadow Copy Service Works

Scalability Factors for Shadow Copies

Vssadmin utility

Note: The preceding links were correct as of January 29, 2015. If you find a link is broken, provide feedback and a VMware employee will update the link.

For translated versions of this article, see:

日本語: VSS （Volume Shadow Copy） による静止に関する問題のトラブルシューティング (1036074)

Spanish: Solucionar problemas relacionados con el modo inactivo de instantáneas de volumen (VSS) (2033055)

Portuguese: Como determinar a versão do software da VMware e o número da versão (2032393)

简体中文: 就与卷影复制 (VSS) 静默操作相关的问题进行故障排除 (2041002)

Related Information

Supported Operating Systems and MSFT Active Directory Domain Functional Levels for VMware Horizon 8 2006 and later

Detectable by VMware SkylineTM

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