RHBA-2013:1517 - 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:

• Due to an omission in the libvirt code, the VLAN tag for a hostdev-based

network (a network which is a pool of SRIOV virtual functions to be assigned to
guests via PCI device assignment) was not being properly set in the hardware
device. With this update, the missing code has been provided, and a VLAN tag set
in the network definition is now properly presented to the devices as they are
assigned to guests. (BZ#1014445)

• Some code refactoring to fix another bug left a case in which locks were

cleaned up incorrectly. As a consequence, the libvirtd daemon could terminate
unexpectedly on certain migrations to file scenarios. With this update, the lock
cleanup paths have been fixed and libvirtd no longer crashes when saving a
domain to a file. (BZ#1017194)

• Whereas the status command of libvirt-guests init script returned "0" value

when libvirt-guests service was stopped, LSB (Linux Standard Base) required a
different value ("3") in such case. Consequently, other scripts relying on the
return value could not distinguish whether the service was running or not. The
libvirt-guests script has been fixed to conform with LSB and the "service
libvirt-guests status" command now returns the correct value in the described
scenario. (BZ#1017196)

• Previously, the virDomainDeviceUpdateFlags() function in libvirt allowed users

to update some configuration quirks on a domain device while the domain is still
running. Consequently, when updating NIC (Network Interface Controller), the QoS
could not be changed because of a missing implementation. With this update, the
missing implementation has been added, and QoS can now be updated on a NIC.
(BZ#1017198)

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 6.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.4 i386
• Red Hat Enterprise Linux Server - AUS 6.4 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 6.4 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.4 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 for RHEL 6 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.4 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.4 i386
• Red Hat Gluster Storage Server for On-premise 2.1 x86_64
• Red Hat Storage for Public Cloud (via RHUI) 2.1 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 EUS Compute Node 6.4 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x

Fixes

• BZ - 1017194 - Libvirtd crash when destroying linux guest which executed a series of operations about S3 and save /restore
• BZ - 1017196 - `service libvirt-guests status` may return 0 even if stopped
• BZ - 1017198 - Allow QoS change on the fly using updateDeviceFlags

CVEs

(none)

References

(none)