8.6 Gather information before contacting Support Center

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8.6 Gather information before contacting Support Center

When contacting the IBM Support Center, you will be required to have the following information:

  • Description of the problem.

  • Any syslog entries related to the problem, which can be found with the following command:

     # grep "mmfs:" /var/log/messages 

  • mmfsadm dumps all output on at least the failing node and the file system manager's node. Some errors may require that you have this information from all nodes.

  • A master mmfs log file that is merged and chronologically sorted for the date of the failure. This can be done by copying the logs of all nodes for the date of the failure and using the cat and sort commands to merge them, as in Example 8-22 on page 242.

  • The actual application output of the failure.

  • Traces on affected nodes, if available. In some cases, this may mean all the nodes.

  • Any internal dumps written to /tmp/mmfs relating to the time of the failure.

  • On the failing node, the output of:

     # rpm -aq 

  • For all failing file systems, the output of:

     # mmlsdisk <filesystem> 

Example 8-23: Gathering and sorting log data

start example
 # cp /var/adm/ras/mmfs.log.latest node001 # scp node002:/var/adm/ras/mmfs.log.latest node002 mmfs.log.latest      100% |*********************************| 44912        00:00 # scp node003:/var/adm/ras/mmfs.log.latest node003 mmfs.log.latest      100% |*********************************| 82790        00:00 # ls -la total 24 drwxr-xr-x    2 root     root         4096 Nov 29 21:49 . drwxr-x---   13 root     root         4096 Nov 29 00:26 .. -rw-r--r--    1 root     root         2440 Nov 29 00:29 node001 -rw-r--r--    1 root     root         4912 Nov 29 00:29 node002 -rw-r--r--    1 root     root         2790 Nov 29 00:30 node003 # cat node* | sort -k 3,4 > merged.log # ls -la total 36 drwxr-xr-x    2 root     root         4096 Nov 29 21:49 . drwxr-x---   13 root     root         4096 Nov 29 00:26 .. -rw-r--r--    1 root     root        10142 Nov 29 21:49 merged.log -rw-r--r--    1 root     root         2440 Nov 29 00:29 node001 -rw-r--r--    1 root     root         4912 Nov 29 00:29 node002 -rw-r--r--    1 root     root         2790 Nov 29 00:30 node003 
end example



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Linux Clustering with CSM and GPFS
Linux Clustering With Csm and Gpfs
ISBN: 073849870X
EAN: 2147483647
Year: 2003
Pages: 123
Authors: IBM Redbooks

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