NFS Server Incorrectly Calculates the nextRefresh Value and Never Updates the Mapping Cache (296156)


The information in this article applies to:

  • Microsoft Windows 2000 Server SP1
  • Microsoft Windows 2000 Advanced Server SP1
  • Microsoft Windows 2000 Professional SP1
This article was previously published under Q296156

SYMPTOMS

When the Services for UNIX (SFU) NFS server starts, it contacts the Username Mapping service and caches a copy of the mapping information. Then, every 30 minutes, the NFS server checks with the Username Mapping service to determine whether any changes have been made to the mapping database. If so, the NFS server requests the changes. However, the SFU NFS server is not checking for changes with the Username Mapping service every 30 minutes. NFS Server incorrectly calculates the nextRefresh value, so it never updates the mapping cache.

CAUSE

The NFS server has a thread that basically sleeps for 30 minutes. The calculation that computes the time has a problem that causes the computed time to be much longer than 30 minutes.

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. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows 2000 service pack that contains this hotfix.

To resolve this problem immediately, 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 typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix should have the following file attributes or later: 
   Date        Time    Version        Size     File name 
   ------------------------------------------------------
   04/12/2001  12:10p  5.2000.328.15  254,112  Nfssvr.sys

NOTE: The hotfix for this issue was rolled up with the hotfix for Q296149. To install the hotfix that corrects this issue, install the hotfix that is described in the following Microsoft Knowledge Base article:

296149 NFS Server Queries Mapsvc Before It Has Completed Initialization

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
Modification Type:MinorLast Reviewed:10/7/2005
Keywords:kbenv kbprb kbQFE KB296156
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