RHBA-2012:0353 - Bug Fix Advisory

Topic

An updated fence-agents package that fixes one bug is now available for Red Hat
Enterprise Linux 6.

Description

Red Hat fence agents are a collection of scripts to handle remote power
management for several devices. They allow failed or unreachable nodes to be
forcibly restarted and removed from the cluster.

This update fixes the following bug:

• The fence_rhevm fencing agent uses the Red Hat Enterprise Virtualization API

to check the power status ("on" or "off") of a virtual machine. In addition to
the states of "up" and "down", the API includes other states like "unassigned",
"powering_up", "paused", "migrating", "unknown", "not_responding",
"wait_for_launch", "reboot_in_progress", "saving_state", "restoring_state",
"suspended", "image_illegal", "image_locked" or "powering_down". Previously,
only if the machine was in the "up" state, the "on" power status was returned.
The "off" status was returned for all other states although the machine was
actually running. This allowed for successful fencing even before the machine
was really powered off. With this update, the fence_rhevm agent detects power
status of a cluster node more conservatively, and the "off" status is returned
only if the machine is really powered off, it means in the "off" state.
(BZ#785816)

All users of fence-agents are advised to upgrade to this updated package, which
fixes this bug.

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
https://access.redhat.com/kb/docs/DOC-11259

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 High Availability for x86_64 - Extended Update Support 6.2 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support 6.2 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 Resilient Storage for x86_64 - Extended Update Support 6.2 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 6.2 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
• Red Hat Enterprise Linux High Availability (for RHEL Server) - AUS 6.2 x86_64
• Red Hat Enterprise Linux Resilient Storage (for RHEL Server) - AUS 6.2 x86_64

Fixes

CVEs

(none)

References

(none)