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MVFS related issue where NFS file locks on Red Hat Linux become stranded causing system panic

Troubleshooting


Problem

This technote identifies an IBM® Rational® ClearCase® defect due to an MVFS issue that causes NFS file locks on Red Hat Linux® to be stranded resulting in a system panic after applying Red Hat kernel patch for Bugzilla Bug 41942 - RIT161907, and provides you with information on how to workaround the issue.

Symptom


System panic occurs after applying RedHat kernel patch for Bugzilla Bug 41942 - RIT161907 as a result of stranded NFS file locks on Red Hat Linux.

Any attempts to access remotely hosted VOBs or Views from the MVFS using NFS, especially if the VOB and View storage is on a network attached storage (NAS) filer, has the chance to cause an indefinite file lock within the Red Hat 2.6.x kernel virtual filesystem (VFS) when the above referenced patch or later is applied.

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Document Information

Modified date:
16 June 2018

UID

swg21296516

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