RHBA-2011:1431 - Bug Fix Advisory

Topic

Updated libvirt packages that fix one bug 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. The library
provides the libvirtd daemon, which is required for virtualization management of
KVM and LXC.

This update fixes the following bugs:

• Due to a programming error in the initialization code of the libvirtd daemon,

the QEMU driver could have failed to find the user or group ID of the qemu
application on the system. As a result, libvirtd failed to start. With this
update, the error has been corrected and libvirtd now works as expected.
(BZ#743557)

• If the QEMU driver failed to update information about currently allocated

memory, installing a new virtual machine could have failed with the following
error message:

ERROR cannot send monitor command '{"execute":"query-balloon"}':
Connection reset by peer

With this update, the driver has been modified to not consider this behavior as
fatal. Installation now proceeds and finishes as expected. (BZ#747358)

All users of libvirt are advised to upgrade to these updated packages, which fix
this bug. After installing these updated packages, libvirtd must be restarted.
Use the "service libvirtd restart" command for this update to take effect.

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/kb/docs/DOC-11259

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 6.1 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.1 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• 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 6.1 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.1 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 Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.1 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.1 i386
• Red Hat Virtual Storage Appliance (from RHUI) 6.1 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 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 - 743557 - libvirtd fails to start - Failed to find group record for name 'qemu'
• BZ - 747358 - KVM guest install fails with libvirtError: cannot send monitor command '{"execute":"query-balloon"}': Connection reset by peer
• BZ - 749531 - Coverity scan revealed defects

CVEs

(none)

References

(none)