Microsoft KB Archive/902837

= 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 =

Article ID: 902837

Article Last Modified on 10/11/2007

-

APPLIES TO


 * Microsoft Windows Server 2003, Web Edition
 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * 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.



Service pack information
To resolve this problem, obtain the latest service pack for Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

889100 How to obtain the latest service pack for Windows Server 2003

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 &quot;Applies to&quot; section. This problem was first corrected in Windows Server 2003 Service Pack 2.



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

Additional query words: Winx64 Windowsx64 64bit 64-bit

Keywords: kbbug kbfix kbqfe kbpubtypekc kbhotfixserver kbwinserv2003sp2fix KB902837

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.