RHBA-2013:1600 - Bug Fix Advisory

Topic

Updated rgmanager packages that fix two bugs are now available for Red Hat
Enterprise Linux 6.

Description

The rgmanager package contains the Red Hat Resource Group Manager, which is used
to create and manage high-availability server applications in the event of
system downtime.

This update fixes the following bugs:

• Previously, if the main rgmanager process died, either by an unexpected

termination with a segmentation fault or by killing it manually, any service
running on it, was immediately recovered on another node rather than waiting for
fencing, like the rgmanager process did in previous versions. This was
problematic for services containing Highly Available Logical Volume Manager
(HA-LVM) resources using tagging, because the start operation failed if the tag
that was found belonged to a node that was still a member of the cluster. With
this update, service recovery is delayed until after the node is removed from
the configuration and fenced, which allows the LVM resource to recover properly.
(BZ#862075)

• Previously, attempts to start an MRG Messaging (MRG-M) broker caused rgmanager

to terminate unexpectedly with a segmentation fault. This was caused by subtle
memory corruption introduced by calling the pthread_mutex_unlock() function on a
mutual exclusion that was not locked. This update addresses scenarios where
memory could be corrupted when calling pthread_mutex_unlock(), and rgmanager no
longer terminates unexpectedly in the described situation. (BZ#983296)

Users of rgmanager are advised to upgrade to these updated packages, which fix
these bugs.

Solution

Before applying this update, make sure all previously released errata relevant
to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red
Hat Network to apply this update are available at
https://access.redhat.com/site/articles/11258

Affected Products

• Red Hat Enterprise Linux High Availability for x86_64 6 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 6 i386
• Red Hat Enterprise Linux Resilient Storage for x86_64 6 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 6 i386
• Red Hat Enterprise Linux High Availability (for RHEL Server) from RHUI 6 x86_64
• Red Hat Enterprise Linux High Availability (for RHEL Server) from RHUI 6 i386
• Red Hat Enterprise Linux Resilient Storage (for RHEL Server) from RHUI 6 x86_64
• Red Hat Enterprise Linux Resilient Storage (for RHEL Server) from RHUI 6 i386

Fixes

• BZ - 983296 - rgmanager segfault while starting service

CVEs

(none)

References

(none)