RHBA-2014:0911 - Bug Fix Advisory

Topic

Updated libvirt packages that fix several bugs are now available for Red Hat
Enterprise Linux 6.

Description

The libvirt library is a C API for managing and interacting with the
virtualization capabilities of Linux and other operating systems. In addition,
libvirt provides tools for remote management of virtualized systems.

This update fixes the following bugs:

• The UUID (Universally Unique Identifier) is a string of characters which

represents the virtual guest. Displaying the UUID on a screen requires correct
APIs to present the strings in a user-readable format. Previously, printing
unformatted UUID data caused exceptions or incorrectly formatted output. For
Python scripts, exceptions that were not handled could cause unexpected
failures. For other loggings or visual displays, the characters in the output
were jumbled. With this update, the UUID strings are properly formatted and
printing them no longer causes unexpected exceptions or jumbled characters on
output. (BZ#1110185)

• When getting NUMA (Non-Uniform Memory Access) placement advice, current memory

was used for the "amount" parameter. As a consequence, domain placement was not
as precise as it could have been if the current memory changed for the live
domain. With this update, the advice is queried with the maximum memory as an
amount parameter, and advice placement now fixes the domain even when the
current memory changes for the live domain. (BZ#1112819)

• Prior to this update, the libvirt library was trying to pin the domain's

parent thread to another CPU even if its vCPU threads were not allowed to run on
that CPU. As a consequence, the pinning process failed. To fix this bug, the
child threads repin to the old and new CPUs first before only pinning them to
the new ones. As a result, pinning now works even if the new CPU list is not a
subset of the old CPUs. (BZ#1112820)

Users of libvirt are advised to upgrade to these updated packages, which fix
these bugs. After installing the updated packages, libvirtd will be restarted
automatically.

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 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.5 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.5 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 6.5 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.5 ppc64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Virtualization 3 for RHEL 6 x86_64
• Red Hat Gluster Storage Server for On-premise 3 for RHEL 6 x86_64
• Red Hat Enterprise Linux Server - AUS 6.5 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server - TUS 6.5 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.5 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.5 i386
• Red Hat Enterprise Linux EUS Compute Node 6.5 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 1110185 - virDomainGetCPUStats returns binary data in error message when domain doesn't exist
• BZ - 1112820 - Failed to run numatune with specified node

CVEs

(none)

References

(none)