A Windows NT 4.0-Based Cluster May Delete Symbolic Link for Reserved Disks (307465)

SYMPTOMS

When you perform a Move Group/Failover procedure in a Windows NT 4.0-based cluster, the following error message may be logged in the Cluster log:

Physical Disk "DRIVELETTER:" DiskspCheckPath: FindFirstFile for "DRIVELETTER:" failed, error 3.

This error message is typically logged when the second cluster of a two-node cluster is brought online if the cluster had failback for a cluster group set to failback to that node.

You may also receive the following error message when you perform a Move Group procedure:

Physical Disk "DRIVELETTER:" SCSI, error reserving disk, error 21.

CAUSE

You receive the following error message if you install a regression fix from Windows NT 4.0 Service Pack 6a (SP6a):

Physical Disk "DRIVELETTER:" SCSI, error reserving disk, error 21

Under certain conditions, the cluster disk driver (Clusdisk.sys) attempts to attach to devices and does not read a partition table from the devices (assuming that they are cluster disks that are reserved by the other node).

RESOLUTION

A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem.

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

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

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.

The English-language version of this fix should have the following file attributes or later:

   Date       Time   Version    Size       File name   
   ----------------------------------------------------
   12-Nov-01  21:17  1.0.224.6   29,360    Clusdisk.sys
   12-Nov-01  21:17  1.0.224.6  169,744    Clusres.dll
   12-Nov-01  21:17  1.0.224.6   29,968    Resutils.dll

NOTE: Due to file dependencies, this hotfix requires Microsoft Windows NT 4.0 SP6a.

A Windows NT 4.0-Based Cluster May Delete Symbolic Link for Reserved Disks (307465)

SYMPTOMS

CAUSE

RESOLUTION

STATUS