Symptoms

Consider the following scenario:

  • Windows Server 2008 Failover Cluster is installed on a computer that has the Microsoft Multipath I/O (MPIO) solution.

  • Many logical unit numbers (LUNs) are attached to this computer. For example, more than 30 LUNs are attached.

  • An MPIO path failover occurs under stress conditions when there is no available MPIO path.

In this scenario, you receive one of the following error messages:

  • Stop code 0x0000007E SYSTEM_THREAD_EXCEPTION_NOT_HANDLED

  • Stop code 0x000000D5 DRIVER_PAGE_FAULT_IN_FREED_SPECIAL_POOL

Cause

This problem occurs because persistent reservations (PR) in Windows Server 2008 Failover Cluster are set to use a critical work item. Under stress conditions, it causes the MPIO.sys driver to be delayed in handling a device object. When the MPIO.sys driver has an opportunity to handle the device object, it is freed. Therefore, the Windows Server 2008 system triggers stop code 0x0000007E or 0x000000D5.

Resolution

Hotfix information

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

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 have Windows Server 2008 with the Failover Cluster role enabled.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista and Windows Server 2008 file information notes

  • Service Pack 1 is integrated into Windows Server 2008.

  • The MANIFEST files (.manifest) and MUM files (.mum) installed for each environment are listed separately. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files (attributes not listed) are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows Server 2008 and Windows Vista

File name

File version

File size

Date

Time

Platform

Clusdisk.inf

Not Applicable

4,448

27-Jan-2009

00:41

Not Applicable

Clusdisk.sys

6.0.6001.22362

26,112

27-Jan-2009

03:03

x86


For all supported x64-based versions of Windows Server 2008 and Windows Vista

File name

File version

File size

Date

Time

Platform

Clusdisk.inf

Not Applicable

4,448

27-Jan-2009

00:42

Not Applicable

Clusdisk.sys

6.0.6001.22362

31,744

27-Jan-2009

03:33

x64


For all supported Itanium-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Clusdisk.inf

Not Applicable

4,448

26-Jan-2009

23:38

Not Applicable

Clusdisk.sys

6.0.6001.22362

76,288

27-Jan-2009

02:11

IA-64

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 for Windows Server 2008

Additional files for all supported x86-based versions of Windows Server 2008 and Windows Vista

File name

File version

File size

Date

Time

Platform

Package_for_kb963702_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,421

28-Jan-2009

23:53

Not Applicable

Package_for_kb963702_sc~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,422

28-Jan-2009

23:53

Not Applicable

Package_for_kb963702_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,425

28-Jan-2009

23:53

Not Applicable

Package_for_kb963702_server~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,430

28-Jan-2009

23:53

Not Applicable

X86_clusdisk.inf_31bf3856ad364e35_6.0.6001.22362_none_eddf07741d9b2d97.manifest

Not Applicable

1,679

28-Jan-2009

23:55

Not Applicable

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

File name

File version

File size

Date

Time

Platform

Amd64_clusdisk.inf_31bf3856ad364e35_6.0.6001.22362_none_49fda2f7d5f89ecd.manifest

Not Applicable

1,681

28-Jan-2009

23:57

Not Applicable

Package_for_kb963702_sc_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,429

28-Jan-2009

23:53

Not Applicable

Package_for_kb963702_sc~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,430

28-Jan-2009

23:53

Not Applicable

Package_for_kb963702_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,433

28-Jan-2009

23:53

Not Applicable

Package_for_kb963702_server~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,438

28-Jan-2009

23:53

Not Applicable

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

File name

File version

File size

Date

Time

Platform

Ia64_clusdisk.inf_31bf3856ad364e35_6.0.6001.22362_none_ede0ab6a1d993693.manifest

Not Applicable

1,680

28-Jan-2009

23:53

Not Applicable

Package_for_kb963702_sc_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,425

28-Jan-2009

23:53

Not Applicable

Package_for_kb963702_sc~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,426

28-Jan-2009

23:53

Not Applicable

Package_for_kb963702_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,429

28-Jan-2009

23:53

Not Applicable

Package_for_kb963702_server~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,434

28-Jan-2009

23:53

Not Applicable

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