DOCUMENT:Q307465 08-MAY-2002 [winnt] TITLE :Windows NT 4.0 Cluster Deletes Symbolic Link for Reserved Disks PRODUCT :Microsoft Windows NT PROD/VER::4.0,4.0 SP4,4.0 SP5,4.0 SP6a OPER/SYS: KEYWORDS:kbenv w2000mscs ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server, Enterprise Edition versions 4.0, 4.0 SP4, 4.0 SP5, 4.0 SP6a ------------------------------------------------------------------------------- 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. STATUS ====== Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. Additional query words: mscs 21 ====================================================================== Keywords : kbenv w2000mscs Technology : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400sp5 kbWinNTSEnt400sp4 kbWinNTSEnt400 kbWinNTS400search kbWinNTSEnt400SP6a Version : :4.0,4.0 SP4,4.0 SP5,4.0 SP6a Hardware : ALPHA x86 Issue type : kbbug Solution Type : kbfix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.