A disk management program may stop responding when you use the program to expand a logical unit number size on a computer that is running Windows Server 2003 Service Pack 1 (902837)


The information in this article applies to:

  • Microsoft Windows Server 2003, Web Edition
  • Microsoft Windows Server 2003, Standard Edition
  • Microsoft Windows Server 2003, Standard x64 Edition
  • Microsoft Windows Server 2003, Enterprise Edition
  • Microsoft Windows Server 2003, Enterprise x64 Edition
  • Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
  • Microsoft Windows Server 2003 SP1

SYMPTOMS

Consider the following scenario:
  • The computer is running Microsoft Windows Server 2003 Service Pack 1 (SP1).
  • You use a disk management program to expand a logical unit number (LUN) size.
The disk management program may stop responding.

CAUSE

This problem occurs if the following conditions are true:
  • The LUN size changes without sending UNIT ATTENTION code.
  • The disk management program sends IOCTL_DISK_UPDATE_DRIVE_SIZE disk I/O control code to update the logical unit number (LUN) size.
If these conditions are true, the call to read the drive capacity for this disk I/O control code causes the disk management program to stop responding. This problem occurs because of the partitioning lock type that the disk class driver uses.

RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows Server 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

There are no prerequisites.

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 tool in Control Panel.
Windows Server 2003 SP1, 32-bit versions
   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   24-Jun-2005  02:04  5.2.3790.2473      54,784  Classpnp.sys
Windows Server 2003, x64-based versions
   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   24-Jun-2005  04:55  5.2.3790.2473      97,792  Classpnp.sys
Windows Server 2003 SP1, Itanium-based versions
   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   24-Jun-2005  04:55  5.2.3790.2473     160,768  Classpnp.sys
Windows Server 2003, x86-based versions
   Date         Time   Version            Size    File name   CPU    Folder
   --------------------------------------------------------------
   24-Jun-2005  01:14  5.2.3790.356      61,952  Classpnp.sys      x86      RTMQFE
   Date         Time   Version            Size    File name   CPU    Folder
   --------------------------------------------------------------
   24-Jun-2005  02:04   5.2.3790.2473       54,784  Classpnp.sys      x86       SP1QFE
Windows Server 2003 and Windows XP, x64-based versions
   Date         Time   Version            Size    File name   CPU    Folder
   --------------------------------------------------------------
   24-Jun-2005  01:14  5.2.3790.356      61,952  Classpnp.sys      x86      RTMQFE
Windows Server 2003, Itanium-based versions
   Date         Time   Version            Size    File name   CPU    Folder
   --------------------------------------------------------------
   24-Jun-2005  04:55  5.2.3790.356      146,432  Classpnp.sys      IA-64      RTMQFE
   Date         Time   Version            Size    File name   CPU    Folder
   --------------------------------------------------------------
   24-Jun-2005  04:55  5.2.3790.2473      160,768  Classpnp.sys      IA-64      SP1QFE

WORKAROUND

Program developers can work around this problem by using IOCTL_DISK_UPDATE_PROPERTIES disk I/O control code instead of using IOCTL_DISK_UPDATE_DRIVE_SIZE disk I/O control code to update the disk size.

STATUS

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

MORE INFORMATION

Technical support for Windows x64 editions

Your hardware manufacturer provides technical support and assistance for Microsoft Windows x64 editions. Your hardware manufacturer provides support because a Windows x64 edition was included with your hardware. Your hardware manufacturer might have customized the Windows x64 edition installation with unique components. Unique components might include specific device drivers or might include optional settings to maximize the performance of the hardware. Microsoft will provide reasonable-effort assistance if you need technical help with your Windows x64 edition. However, you might have to contact your manufacturer directly. Your manufacturer is best qualified to support the software that your manufacturer installed on the hardware.

For product information about Microsoft Windows XP Professional x64 Edition, visit the following Microsoft Web site:

http://www.microsoft.com/windowsxp/64bit/default.mspx

For product information about Microsoft Windows Server 2003 x64 editions, visit the following Microsoft Web site:

http://www.microsoft.com/windowsserver2003/64bit/x64/default.mspx

For more information, 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

Modification Type:MinorLast Reviewed:8/17/2006
Keywords:kbBug kbfix kbQFE kbHotfixServer kbpubtypekc KB902837 kbAudITPRO
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