RHBA-2013:1304 - Bug Fix Advisory

Topic

Updated cman packages that fix several bugs are now available for Red Hat
Enterprise Linux 5.

Description

The Cluster Manager (cman) utility provides user-level services for managing a
Linux cluster.

This update fixes the following bugs:

• Prior to this update, ccs_tool could fail due to a segmentation fault in two

specific events. First, the input file was the same as the output file and
options were specified with a subcommand. Second, the update command was used
without an input file. With this update, ccs_tool has been fixed to report the
appropriate error message without a segmentation fault. (BZ#714042)

• Previously, fence_xvm, a fencing agent commonly used in virtual deployments,

did not respect the delay parameter as specified in the cluster.conf file. With
this update, the delay support has been added and the fence_xvm agent now works
only after the specified delay. (BZ#854183)

• Under some circumstances, cman returned the file descriptor for the /dev/zero

file, which is always active. If the client application stored this /dev/zero
file instead of the one it expected, cman entered an infinite loop. This update
addresses the bug by making sure that the fence daemon refreshes the file
descriptor on each operation. (BZ#856214)

• In a two node cluster where the network was not always reliable, and a token

was lost but recovered before fencing was complete, the two nodes simultaneously
killed each other. To fix this bug, only one node has been allowed to kill the
other in a deterministic fashion. A cluster restart, one node at a time, is
required for this change to take effect. (BZ#876731)

• Prior to this update, fenced, the daemon in charge of evicting cluster nodes,

could suffer from a time-out while communicating with the ccsd cluster
configuration daemon. The fenced daemon has been reconnected to ccsd when
certain operations take too long to complete, thus fixing this bug. (BZ#881217)

• Previously, man pages had executable flags set. The manual pages permissions

have been edited to agree with FHS standard, thus fixing this bug. (BZ#883816)

• Prior to this update, the end-of-line automatic character detection worked

properly only when using ssh on certain Dell DRAC devices. With this update, the
end-of-line character detection has been fixed and fencing works as expected.
(BZ#904195)

• Prior to this update, APC power switches with firmware version 5.x were not

supported. Consequently, the fence_apc fencing script could not login to the
device. With this update, new firmware is supported and the fencing script is
able to log in. (BZ#886612)

• Previously, the fence agent for Intel IPMILAN standard did not return exit

code correctly when using the 'cycle' method. A patch has been provided to fix
this bug and exit codes are now returned as expected. (BZ#961119)

• Prior to this update, the cman(5) man page did not document how to enable

detailed logging in the CMAN subsystem. This update documents this facility in
more detail. (BZ#963251)

Users of cman 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 Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 714042 - ccs_tool segfaults: (1) input file = output file and subcommand gets some options, (2) update gets no input file
• BZ - 854183 - fence_xvm does not respect delay parameter in cluster.conf
• BZ - 856214 - fenced loops reading from /dev/zero
• BZ - 883816 - man pages have executable flags set

CVEs

(none)

References

(none)