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Upgrade CentOS 5.3 to 5.4

Mon, 11/09/2009 - 00:36 — sandip

Below is a clean method of updating, instead of doing a straight `yum update` which I have often done in the past and broken OS.

yum clean all
yum update glibc\*
yum update yum\* rpm\* python\*
yum clean all
yum update
shutdown -r now

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Sun, 12/20/2009 - 00:37 — sandip lvm snapshot error after upgrade

When running lvm snapshot after the OS upgrade and the server has not yet been rebooted, the below error occurs:

libdevmapper-event-lvm2snapshot.so dlopen failed: /usr/lib64/liblvm2cmd.so.2.02: undefined symbol: dm_list_empty

This is harmless but it does mean that dmeventd-based snapshot usage monitoring is not currently enabled for this snapshot.

Kill the process with `killall dmeventd` and it will restart next time you activate the snapshot to resolve the issue.

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