RHBA-2015:1363 - Bug Fix Advisory

Topic

Updated cluster packages that fix several bugs and add two enhancements are now
available for Red Hat Enterprise Linux 6.

Description

The Red Hat Cluster Manager is a collection of technologies working together to
provide data integrity and the ability to maintain application availability in
the event of a failure.

This update fixes the following bugs:

• Previously, the gfs2_convert utility or a certain corruption could introduce

bogus values for the ondisk inode "di_goal_meta" field. Consequently, these
bogus values could affect GFS2 block allocation, cause an EBADSLT error on such
inodes, and could disallow the creation of new files in directories or new
blocks in regular files. With this update, gfs2_convert calculates the correct
values. The fsck.gfs2 utility now also has the capability to identify and fix
incorrect inode goal values, and the described problems no longer occur.
(BZ#1149516)

• The gfs2_quota, gfs2_tool, gfs2_grow, and gfs2_jadd utilities did not mount

the gfs2 meta file system with the "context" mount option matching the "context"
option used for mounting the parent gfs2 file system. Consequently, the affected
gfs2 utilities failed with an error message "Device or resource busy" when run
with SELinux enabled. The mentioned gfs2 utilities have been updated to pass the
"context" mount option of the gfs2 file system to the meta file system, and they
no longer fail when SELinux is enabled. (BZ#1121693)

• A race condition in the dlm_controld daemon could be triggered when reloading

the configuration, which caused a dangling file pointer to be written to.
Consequently, under certain rare conditions, dlm_controld could terminate
unexpectedly with a segmentation fault, leaving Distributed Lock Manager (DLM)
lockspaces unmanaged and requiring a system reboot to clear. This bug has been
fixed, and dlm_controld no longer crashes when the configuration is updated.
(BZ#1133724)

• Previously, errors generated while updating the resource-agents scheme were

sometimes not reported. As a consequence, if an error occurred when updating the
resource-agents schema, the update failed silently and later attempts to start
the cman service could fail as well. With this update, schema errors are
reported, and remedial action can be taken at upgrade time in case of problems.
(BZ#1087286)

In addition, this update adds the following enhancements:

• The qdiskd daemon now automatically enables the master_wins mode when votes

for the quorum disk default to 1 or when the number of votes is explicitly set
to 1. As a result, quorum disk configuration is more consistent with the
documentation, and a misconfiguration is avoided. (BZ#1099223)

• A new error message has been added to the qdiskd daemon, which prevents qdiskd

from starting if it is configured with no heuristics in a cluster with three or
more nodes. Heuristics are required in clusters with three or more nodes using a
quorum device for correct operation in the event of a tie-break. Now, if no
heuristics are specified and the cluster contains three or more nodes, the cman
service fails to start and an error message is returned. This behavior prevents
misconfigurations. (BZ#1095418)

Users of cluster are advised to upgrade to these updated packages, which fix
these bugs and add these enhancements.

Solution

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

For details on how to apply this update, refer to:

https://access.redhat.com/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 - 1087286 - The cman service could not start after updating the RHEL version from 6.0 to RHEL6.3
• BZ - 1095657 - receive_start should make it clear when it fails
• BZ - 1111500 - cman.5 incorrectly states that cluster.conf can contain up to 9 altnames for a node.
• BZ - 1142947 - two_nodes=1 with one-node cluster

CVEs

(none)

References

(none)