- Issued:
- 2008-07-25
- Updated:
- 2008-07-25
RHBA-2008:0800 - Bug Fix Advisory
Synopsis
cman-kernel bug fix update
Type/Severity
Bug Fix Advisory
Topic
Updated cman-kernel packages that fix module-loading issues and various
bugs are now available for Red Hat Enterprise Linux 4.7, kernel release
2.6.9-78.EL.
Description
The cman-kernel packages contain modules that allow the cluster manager
(cman) to communicate with the kernel.
In certain situations, cman sent a message that required an acknowledgment
(ACK). If that message was delayed, it was possible for a HELLO message to
be sent; however, the HELLO message had a higher sequence number than the
first ACK message. This caused cman to discard valid messages, possibly
causing mount operations to hang. In these updated packages, the sequence
number of the last ACK message is checked instead of the last sequence
number of any message, which resolves this issue.
The following bug has been fixed: "Errors in the cman networking code which
cause the 'CMAN: Initiating transition, generation 18' error."
Also, these updated cman-kernel packages are in sync with the latest
kernel (2.6.9-78.EL). The modules in earlier cman-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 cman-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 High Availability for x86_64 4 x86_64
- Red Hat Enterprise Linux High Availability for x86_64 4 ppc
- Red Hat Enterprise Linux High Availability for x86_64 4 ia64
- Red Hat Enterprise Linux High Availability for x86_64 4 i386
Fixes
- BZ - 373671 - cman throwing away messages
- BZ - 444751 - CMAN: Initiating transition, generation 18
CVEs
(none)
References
(none)
The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.