Applies ToHyper-V Server 2008 Windows Server 2008 Datacenter Windows Server 2008 Enterprise Windows Server 2008 Foundation Windows Server 2008 Service Pack 2 Windows Server 2008 Standard

Symptoms

Consider the following scenario:

  • You enable the Hyper-V role on a computer that is running Windows Server 2008.

  • You connect a removable disk to the computer. For example, you connect a USB flash drive to the computer.

  • You perform a Volume Shadow Copy Service (VSS) backup operation for a volume of the computer. The volume contains some virtual hard disk (VHD) files for some running virtual machines (VMs).

  • You try to safely remove the removable disk after the backup operation is completed.

In this scenario, you cannot safely remove the removable disk. Additionally, you receive a message that states that the volume is being used.

Cause

This issue occurs because of a handle leak in the storage VSP driver (Storvsp.sys).

Resolution

Hotfix information A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix. Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running one of the following operating systems:

  • Windows Server 2008

  • Windows Server 2008 Service Pack 2 (SP2)

For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

968849 How to obtain the latest service pack for Windows Server 2008

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows Server 2008 file information notes

Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    SR_Level

    Service branch

    6.0.600 2. 22xxx

    Windows Server 2008

    SP2

    LDR

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008" section. MUM files and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Service branch

Isoparser.sys

6.0.6002.22553

19,968

22-Dec-2010

13:57

x64

AMD64_WSTORVSP.INF_31BF3856AD364E35_6.0.6002.22553_NONE_8C9B61C57D3C5E76

Passthruparser.sys

6.0.6002.22553

28,672

22-Dec-2010

13:57

x64

AMD64_WSTORVSP.INF_31BF3856AD364E35_6.0.6002.22553_NONE_8C9B61C57D3C5E76

Storvsp.sys

6.0.6002.22553

121,344

22-Dec-2010

13:57

x64

AMD64_WSTORVSP.INF_31BF3856AD364E35_6.0.6002.22553_NONE_8C9B61C57D3C5E76

Vhdparser.sys

6.0.6002.22553

87,552

22-Dec-2010

13:57

x64

AMD64_WSTORVSP.INF_31BF3856AD364E35_6.0.6002.22553_NONE_8C9B61C57D3C5E76

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Additional file information for Windows Server 2008

Additional files for all supported x64-based versions of Windows Server 2008

File name

Amd64_wstorvsp.inf_31bf3856ad364e35_6.0.6002.22553_none_8c9b61c57d3c5e76.manifest

File version

Not applicable

File size

5,262

Date (UTC)

22-Dec-2010

Time (UTC)

16:35

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,143

Date (UTC)

23-Dec-2010

Time (UTC)

07:08

Platform

Not applicable

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