RHBA-2008:0803 - Bug Fix Advisory

Topic

Updated cmirror-kernel packages that fix various bugs and module-loading
issues are now available for Red Hat Enterprise Linux 4.7, kernel release
(2.6.9-78.EL).

Description

The cmirror-kernel packages provide support within the kernel for cluster
mirroring.

These updated packages fix the following bugs:

• cmirror-kernel now prevents a server from issuing I/O requests on

devices that are suspended.

• It was not possible to create a mirror log without the "block_on_error"

flag. In these updated packages, a mirror log can be created without the
"block_on_error" flag.

• A bug that may have caused an infinite election loop or a mirror

activation deadlock has been resolved. The bug may have caused errors
similar to the following to occur:
"dm-cmirror: Failed to receive election results from server"

• A bug that caused a panic in cluster_log_ser during resyncing of

two-legged core log mirrors has been fixed.

Also, these updated cmirror-kernel packages are in sync with the latest
kernel (2.6.9-78.EL). The modules in earlier cmirror-kernel packages fail
to load because they do not match the running kernel. It is possible to
force-load the modules; however, with this update, force-loading the
modules is not required.

Users are advised to upgrade to these latest cmirror-kernel packages, which
are updated for use with the 2.6.9-78.EL kernel.

Solution

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

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

Affected Products

• Red Hat Enterprise Linux Resilient Storage for x86_64 4 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 4 ppc
• Red Hat Enterprise Linux Resilient Storage for x86_64 4 ia64
• Red Hat Enterprise Linux Resilient Storage for x86_64 4 i386

Fixes

• BZ - 217895 - lost election results from cmirror server cause mirror activation deadlock
• BZ - 450939 - panic in cluster_log_ser during resync of two legged core log mirrors

CVEs

(none)

References

(none)