PhysicalDisk counters contain invalid and duplicate entries when you use Microsoft Multipath I/O (MPIO) to control one or more storage devices

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Article ID: 974878 - View products that this article applies to.
Support for Windows Vista Service Pack 1 (SP1) ends on July 12, 2011. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows.
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SYMPTOMS

Consider the following scenario:
  • You connect a computer that is running Windows Vista or Windows Server 2008 to one or more storage devices that are controlled by Microsoft Multipath I/O (MPIO).
  • You use a System Monitor tool, such as Performance Monitor (perfmon.exe), to monitor the PhysicalDisk counters of the storage devices.
In the Performance Monitor window, you find that the storage devices are named incorrectly, and that the expected numeric information is not displayed. Additionally, in the Performance Monitor Properties window, the PhysicalDisk counters under the instances tab contain invalid and duplicate disk resource entries. However, when you use the DiskPart.exe tool to check the disk resources, the disk resources are displayed correctly.

CAUSE

This issue occurs because Partition Manager (PartMgr.sys) sends all the redundant path information to Windows Management Instrumentation (WMI).

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=support
Note 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.

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.

Prerequisites

To apply this hotfix, your computer must be running one of the following operating systems:
  • Windows Vista with Service Pack 1
  • Windows Vista with Service Pack 2
  • Windows Server 2008
  • Windows Server 2008 with Service Pack 2

Restart requirement

You have to restart the computer after you apply this hotfix.

Registry information

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

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

  • The files that apply to a specific product or milestone (RTM, SPn) can be identified by examining the file version numbers as shown in the following table:
    Collapse this tableExpand this table
    VersionProductMilestoneService branch
    6.0.6001.22xxxWindows Vista SP1 and Windows Server 2008 SP1SP1LDR
    6.0.6002.22xxxWindows Vista SP2 and Windows Server 2008 SP2SP2LDR
  • Service Pack 1 is integrated into the original release version of Windows Server 2008. Therefore, RTM milestone files apply only to Windows Vista. RTM milestone files have a 6.0.0000.xxxxxx version number.
  • 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 and for Windows Vista" section. 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, for which the attributes are not listed, are signed with a Microsoft digital signature.


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

Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Classpnp.sys6.0.6001.22528124,48822-Sep-200913:04x86
Stortrace.mofNot Applicable17,93701-Apr-200919:00Not Applicable
Classpnp.sys6.0.6002.22230124,47222-Sep-200913:02x86
Stortrace.mofNot Applicable17,93703-Apr-200921:09Not Applicable
Partmgr.sys6.0.6001.2252853,32022-Sep-200913:05x86
Partmgr.sys6.0.6002.2223053,30422-Sep-200913:03x86

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

Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Classpnp.sys6.0.6001.22528162,37622-Sep-200913:27x64
Stortrace.mofNot Applicable17,93701-Apr-200916:17Not Applicable
Classpnp.sys6.0.6002.22230163,38422-Sep-200912:42x64
Stortrace.mofNot Applicable17,93703-Apr-200920:54Not Applicable
Partmgr.sys6.0.6001.2252873,80022-Sep-200913:27x64
Partmgr.sys6.0.6002.2223072,24822-Sep-200912:43x64

For all supported Itanium-based versions of Windows Server 2008

Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Classpnp.sys6.0.6001.22528343,11222-Sep-200913:02IA-64
Stortrace.mofNot Applicable17,93701-Apr-200916:17Not Applicable
Classpnp.sys6.0.6002.22230343,09622-Sep-200912:45IA-64
Stortrace.mofNot Applicable17,93703-Apr-200920:54Not Applicable
Partmgr.sys6.0.6001.22528154,69622-Sep-200913:02IA-64
Partmgr.sys6.0.6002.22230154,68022-Sep-200912:46IA-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 Diskpart Command-Line Utility , click the following article number to view the article in the Microsoft Knowledge Base:
300415 A Description of the Diskpart Command-Line Utility
For more information about DiskPart Command-Line Options, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/library/cc766465(WS.10).aspx

Additional file information for Windows Server 2008 and for Windows Vista


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

Collapse this tableExpand this table
File namePackage_for_kb974878_client_1~31bf3856ad364e35~x86~~6.0.2.0.mum
File version
File size1,367
Date (UTC)23-Sep-2009
Time (UTC)05:49
PlatformNot Applicable
File namePackage_for_kb974878_client_2~31bf3856ad364e35~x86~~6.0.2.0.mum
File version
File size1,694
Date (UTC)23-Sep-2009
Time (UTC)05:49
PlatformNot Applicable
File namePackage_for_kb974878_client~31bf3856ad364e35~x86~~6.0.2.0.mum
File version
File size1,713
Date (UTC)23-Sep-2009
Time (UTC)05:49
PlatformNot Applicable
File namePackage_for_kb974878_sc_0~31bf3856ad364e35~x86~~6.0.2.0.mum
File version
File size1,422
Date (UTC)23-Sep-2009
Time (UTC)05:49
PlatformNot Applicable
File namePackage_for_kb974878_sc_1~31bf3856ad364e35~x86~~6.0.2.0.mum
File version
File size1,690
Date (UTC)23-Sep-2009
Time (UTC)05:49
PlatformNot Applicable
File namePackage_for_kb974878_sc~31bf3856ad364e35~x86~~6.0.2.0.mum
File version
File size1,701
Date (UTC)23-Sep-2009
Time (UTC)05:49
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Date (UTC)23-Sep-2009
Time (UTC)05:49
PlatformNot Applicable
File namePackage_for_kb974878_server_1~31bf3856ad364e35~x86~~6.0.2.0.mum
File version
File size1,694
Date (UTC)23-Sep-2009
Time (UTC)05:49
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File size1,713
Date (UTC)23-Sep-2009
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Date (UTC)23-Sep-2009
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PlatformNot Applicable
File nameX86_14eddad2e79d67c7e2e3c04bd8c0c2d2_31bf3856ad364e35_6.0.6002.22230_none_9df56981d5f23ce5.manifest
File version
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Date (UTC)23-Sep-2009
Time (UTC)05:49
PlatformNot Applicable
File nameX86_7c0d60f3cebabfdb0c7abcf29d32ad9c_31bf3856ad364e35_6.0.6002.22230_none_9ad4754c123a008b.manifest
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File size696
Date (UTC)23-Sep-2009
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File nameX86_bf50510b6447baa6dccbdbef6cd0bd8f_31bf3856ad364e35_6.0.6001.22528_none_a883816b829337bd.manifest
File version
File size696
Date (UTC)23-Sep-2009
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PlatformNot Applicable
File nameX86_microsoft-windows-classpnp_31bf3856ad364e35_6.0.6001.22528_none_15ff3576c5386c42.manifest
File version
File size4,355
Date (UTC)22-Sep-2009
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PlatformNot Applicable
File nameX86_microsoft-windows-classpnp_31bf3856ad364e35_6.0.6002.22230_none_17d2d522c26e129f.manifest
File version
File size4,355
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File version
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File version
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Additional files for all supported x64-based versions of Windows Server 2008 and of Windows Vista

Collapse this tableExpand this table
File nameAmd64_5338db4c6414616114fbe8d054916ffe_31bf3856ad364e35_6.0.6002.22230_none_2212917bf7b3e85d.manifest
File version
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Date (UTC)23-Sep-2009
Time (UTC)05:49
PlatformNot Applicable
File nameAmd64_8361b284f4fd8d94225ad755e8125efc_31bf3856ad364e35_6.0.6001.22528_none_f4d3c30d828c8ef2.manifest
File version
File size708
Date (UTC)23-Sep-2009
Time (UTC)05:49
PlatformNot Applicable
File nameAmd64_b0d1ed5055d16e2ffe04bb20446926ef_31bf3856ad364e35_6.0.6001.22528_none_6f0bc9df6639b643.manifest
File version
File size700
Date (UTC)23-Sep-2009
Time (UTC)05:49
PlatformNot Applicable
File nameAmd64_cde1129f15792d3544c9031f20366cce_31bf3856ad364e35_6.0.6002.22230_none_d9d5e5c99b30b4e5.manifest
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File size700
Date (UTC)23-Sep-2009
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File nameAmd64_microsoft-windows-classpnp_31bf3856ad364e35_6.0.6001.22528_none_721dd0fa7d95dd78.manifest
File version
File size4,361
Date (UTC)22-Sep-2009
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File nameAmd64_microsoft-windows-classpnp_31bf3856ad364e35_6.0.6002.22230_none_73f170a67acb83d5.manifest
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Date (UTC)23-Sep-2009
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File namePackage_for_kb974878_server_0~31bf3856ad364e35~amd64~~6.0.2.0.mum
File version
File size1,433
Date (UTC)23-Sep-2009
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PlatformNot Applicable
File namePackage_for_kb974878_server_1~31bf3856ad364e35~amd64~~6.0.2.0.mum
File version
File size1,706
Date (UTC)23-Sep-2009
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File namePackage_for_kb974878_server~31bf3856ad364e35~amd64~~6.0.2.0.mum
File version
File size1,723
Date (UTC)23-Sep-2009
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Date (UTC)23-Sep-2009
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File namePackage_for_kb974878_winpesrv~31bf3856ad364e35~amd64~~6.0.2.0.mum
File version
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Date (UTC)23-Sep-2009
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Additional files for all supported Itanium-based versions of Windows Server 2008

Collapse this tableExpand this table
File nameAmd64_5338db4c6414616114fbe8d054916ffe_31bf3856ad364e35_6.0.6002.22230_none_2212917bf7b3e85d.manifest
File version
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Date (UTC)23-Sep-2009
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File version
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File version
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File version
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File version
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Date (UTC)23-Sep-2009
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File namePackage_for_kb974878_server_0~31bf3856ad364e35~amd64~~6.0.2.0.mum
File version
File size1,433
Date (UTC)23-Sep-2009
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PlatformNot Applicable
File namePackage_for_kb974878_server_1~31bf3856ad364e35~amd64~~6.0.2.0.mum
File version
File size1,706
Date (UTC)23-Sep-2009
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PlatformNot Applicable
File namePackage_for_kb974878_server~31bf3856ad364e35~amd64~~6.0.2.0.mum
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Date (UTC)23-Sep-2009
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Date (UTC)23-Sep-2009
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Properties

Article ID: 974878 - Last Review: October 7, 2011 - Revision: 3.0
APPLIES TO
  • Windows Vista Service Pack 1
  • Windows Vista Service Pack 2
  • Windows Server 2008 Service Pack 2
  • Windows Server 2008 Standard
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Enterprise without Hyper-V
  • Windows Server 2008 Datacenter without Hyper-V
  • Windows Server 2008 for Itanium-Based Systems
  • Windows Web Server 2008
  • Windows Server 2008 Standard without Hyper-V
Keywords: 
kbfix kbautohotfix kbexpertiseadvanced kbsurveynew kbqfe KB974878

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