RHBA-2015:0916 - Bug Fix Advisory

Topic

Updated libvirt packages that fix two 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:

• Previously, when the default CPU mask was specified while using Non-Uniform

Memory Access (NUMA) pinning, virtual CPUs (vCPUs) could not be pinned to
physical CPUs that were not contained in the default node mask. With this
update, the control groups (cgroups) code correctly attaches only vCPU threads
instead of the entire domain group, and using NUMA pinning with the default
cpuset subsystem now works as expected. (BZ#1209891)

• Prior to this update, when starting the libvirt network filter (nwfilter)

while no network was available, the nwfilter driver initialization failed. With
this update, nwfilter automatically creates a path for the nwfilter.leases file.
This allows nwfilter to be independent from the network driver and to be able to
start with no network available. (BZ#1208619)

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.

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

https://access.redhat.com/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 6.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.6 i386
• Red Hat Enterprise Linux Server - AUS 6.6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 6.6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Virtualization 3.5 x86_64
• Red Hat Virtualization 3.4 x86_64
• Red Hat Virtualization 3 for RHEL 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Server - TUS 6.6 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 6.6 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.6 i386
• Red Hat Gluster Storage Server for On-premise 3 for RHEL 6 x86_64
• Red Hat Enterprise Linux EUS Compute Node 6.6 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 - 1208619 - Create directory for lease files if it's missing (i.e. if no net is autostarted)
• BZ - 1209891 - changing the pinning with virsh setvcpupin does not work

CVEs

(none)

References

(none)