IBM Support

Stale NFS File Handle errors from Solaris 10 or HP-UX NFS clients

Troubleshooting


Problem

This technote discusses why the error, mvfs: Error: open: cleartext changed!, is reported in the MVFS (MultiVersion File System) log on the view server when using IBM® Rational® ClearCase® on Solaris® 10 or HP-UX NFS clients.

Symptom


Stale NFS File Handle errors are occurring from Solaris 10 or HP-UX NFS clients (including ClearCase servers if they use NFS to mount ClearCase data, such as from a NAS) when using Rational ClearCase.

The mvfs_log file on the view server host has errors like:

444e490e mvfs: Error: open: cleartext changed!

Cause

NFS version 4, which is the default on Solaris 10, is not working correctly with ClearCase.


Note: The use of NFS version 4 may also impact the performance of various ClearCase operations.

Resolving The Problem



SOLUTION:

    ClearCase versions 7.0.0.5, 7.0.1.4 and 7.0.1.4 now support NFSv4 for AUTH_SYS on either the Solaris or HP-UX platforms. The supported versions need to be installed on the server and clients.



WORKAROUNDS (if the versions listed in the solution above cannot be applied):

    1. On Solaris 10 NFS clients (including ClearCase servers if they use NFS to mount ClearCase data, such as from a NAS) change the NFS version to 3 by setting "NFS_CLIENT_VERSMAX=3" in the /etc/default/nfs file.

    2. Kill any running vob_server process for the affected VOB as follows:

    1. cleartool umount /vob-tag from the client
    2. cleartool umount /vob-tag from the VOB server, if necessary
    3. kill the vob_server process running on the VOB server
    4. cleartool mount /vob-tag from the client

[{"Product":{"code":"SSSH27","label":"Rational ClearCase"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"Operating System Configurations","Platform":[{"code":"PF010","label":"HP-UX"},{"code":"PF027","label":"Solaris"}],"Version":"7.0;7.0.0.1;7.0.0.2;7.0.0.3;7.0.0.4;7.0.1;7.0.1.1;7.0.1.2;7.0.1.3;7.1","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}},{"Product":{"code":"SSSH27","label":"Rational ClearCase"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"MVFS","Platform":[{"code":"","label":""}],"Version":"","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
16 June 2018

UID

swg21238219