[Pacemaker] [FYI] Required errata for RHEL5

Keisuke MORI keisuke.mori+ha at gmail.com
Thu Nov 18 23:21:04 EST 2010

Hi all,

For your information for RedHat users,

As a conclusion of testing in my company, we consider that
the following errata should be applied on RHEL5.5 or below in order to
get Pacemaker work more stably.

Due to a malfunction in libxml2-2.6.26 which comes with RHEL5.5,
Pacemaker may fail to update the cib information.

If you saw an error log like this, you're hitting this issue:
attrd: [16708]: ERROR: attrd_cib_callback: Update -40 for
default_ping_set=100 failed: Required data for this CIB API call not

Or you may get an error from a crm_* command like this:
# crm_standby -U node1 -v off
Please choose from one of the matches above and suppy the 'id' with --attr-id

It happened only in limited situations as long as we've tested,  but
technically it randomly happens.
The bug in libxml2 seems have been already fixed in libxml2-2.6.27 or
later according to the git log.

Related discussions and links:

Many thanks to Hideo Yamauchi and RedHat support for resolving  this issue.

I hope it helps to all.

Keisuke MORI

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