DOCUMENT:Q216064 06-AUG-2002 [winnt] TITLE :Cluster Server Has Clusdb Corruption After Power Outage PRODUCT :Microsoft Windows NT PROD/VER:winnt:4.0 OPER/SYS: KEYWORDS:kbenv kbWinNT400sp5fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server, Enterprise Edition version 4.0, used with: - Microsoft Cluster Server ------------------------------------------------------------------------------- SYMPTOMS ======== When you use Microsoft Cluster Server (MSCS), under certain circumstances (for example, both nodes experience a simultaneous power failure after a relatively long period of cluster activity), one of the following may occur: - The cluster database file (located in the %SystemRoot%\Cluster folder) may become corrupted on both nodes (for example, the Clusdb file contains zero bytes on both nodes). - The :\Mscs\Chk.tmp file may be inconsistent and, if used by MSCS, may result in Clusdb corruption. - The :\Mscs\Chk.tmp file may be outdated as a checkpoint file may not have been written during the interval when the two nodes were up. If the computer's configuration is changed and a recent checkpoint file reflecting this change does not exist, the log files (:\Mscs\quolog.log and :\Mscs\Chk.tmp) may contain inconsistent quorum resource information. Symptoms you may experience include: - MSCS cannot be started, and both nodes are able to access and use the Clusdb file, so the cluster cannot be formed. - MSCS cannot be started with the initial Clusdb file allowed to locate the latest checkpoint file, but its contents are inconsistent. If MSCS loads this file the Clusdb file may become corrupted. If a retry to form the cluster from the other node is done, the second Clusdb file may become corrupt. - MSCS can start, but the cluster starts in an outdated state (for example, during a week of operation no checkpoint was taken, then the next MSCS restart uses the last checkpoint file to restore the configuration, and this file may be outdated). RESOLUTION ========== To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to: - http://www.microsoft.com/Windows/ServicePacks/ -or- - Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack For information on obtaining the individual software update, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web: http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS STATUS ====== Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows NT version 4.0 Service Pack 5. Additional query words: ====================================================================== Keywords : kbenv kbWinNT400sp5fix Technology : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch Version : winnt:4.0 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.