Date Created: Wed 22-Sep-2010

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This document is part of a complete set-up of installing and configuring a Windows interop environment with Linux on RHEL 5. There is not another set of detailed documents anywhere on the internet out side of our site. If this article does not contain enough information, search the rest of this site: https://webspheretools.com and you will find many mini articles on Linux and Windows interop and MVFS/Samba support. Also feel free to contact me if you require ClearCase consulting and support.

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How do I – understand why Rebuilding of MVFS modules with kernel symbol exports fails but installation of ClearCase is successful
Using pre-built MVFS modules that are not compatible with the kernel results in the failure of MVFS to load after a successful installation of IBM Rational ClearCase.

Cause
When the pre-built MVFS modules are not compatible, the installation process automatically tries to rebuild the kernel from the kernel sources on the machine. When the kernel sources are not available, the installation completes successfully but MVFS does not load.
The installation log files contain an error similar to:

400 ERROR <time> Linux Kernel source root is not valid: "/lib/modules/2.6.9-67.ELsmp/build"
402 ERROR <time> Rebuilding of mvfs module with your kernel symbol exports failed. You must rebuild the mvfs module by hand..

This issue can also occur when you install MVFS on a machine that has an unsupported kernel level.

Resolving the problem
To work around this issue, check that your kernel version is supported. If it is not supported, switch to a supported version and manually rebuild the kernel.
For Red Hat systems, you can obtain the necessary files by installing the kernel-devel RPM package that corresponds to the operating system.

For information on rebuilding the MVFS module, see /var/adm/rational/clearcase/mvfs/mvfs_src/README.txt.

Reference: http://www.samecs.com

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In January 2013, I was awarded the prestigous 'IBM Champion' accolade.


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