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upgrade

Multipathing software upgrades fail in RHEL 5

Publication Date:  2012-09-20 Views:  68 Downloads:  0
Issue Description
When upgrading the multipathing software in a site, The system fails to load ko(upUpper.ko,upVhba.ko) related with multipath after rebooting server. Failure information is illegal module format.
Alarm Information
Null
Handling Process
1.Uninstall multipathing software
2. Modify the version of /etc/redhat-release file to 5.3. Reinstall multipathing and reboot server. Then multipathing software installs successful.
3.There is no error when starting database and cluster. Upgrade done.
Root Cause
1.The OS on client server is RHEL 5 which installs Oracle10g RAC.
2.Check server OS version.
  cat /etc/redhat-release
  Red Hat Enterprise Linux AS release 4
3.After inquiring customers, we know that they modify the /etc/redhat-release file to meet Oracle10g RAC when installing it. 
4.In RHEL 5, the version of /etc/redhat-release file is modified to redhat4.0, and when installing multipath they select the ko which corresponds this version. In fact, the kernel version is 5.3, which corresponding version is 2.6.18-128-e15, so ko loads fail.
Suggestions
1. Uninstall multipathing software
2. Modify the version of /etc/redhat-release file to 5.3. Reinstall multipathing and reboot server. Then multipathing software installs successful.
3. There is no error when starting database and cluster. Upgrade done.

END