Microsoft KB Archive/321080

= Ntbackup Does Not Back Up Files from an SFU NFS Mount Point =

Article ID: 321080

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Windows Services for UNIX 2.0 Standard Edition
 * Microsoft Windows Services for UNIX 2.1
 * Microsoft Windows Services for Unix 2.2

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This article was previously published under Q321080



SYMPTOMS
The Ntbackup.exe utility from Microsoft Windows 2000 or Microsoft Windows XP may not back up data from an SFU NFS mount point. Although the backup appears to work, the file is empty after you restore it. A netmon trace shows that an NFS 'Read from Directory' is sent to the UNIX host, but not a 'Read from File', and this is why no data is backed up.



CAUSE
Ntbackup.exe queries the NFS client to see if it supports IOCTLs for querying for space regions. Although the NFS client claims to support IOCTL for querying sparse region, it does not.



RESOLUTION
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next 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/contactus/?ws=support

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 ---  19-Apr-2002  08:53  5.2000.328.25     168,960  Nfsclnt.exe 19-Apr-2002 08:53  5.2000.328.25     113,664  Nfscprop.dll 19-Apr-2002 08:53  5.2000.328.25     318,080  Nfsrdr.sys



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.



MORE INFORMATION
The NFS client has now been changed to report that it does not support IOCTL.

Keywords: kbhotfixserver kbqfe kbbug kbenv kbfix kbqfe KB321080

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