Issued:
2013-11-21
Updated:
2014-01-16

RHBA-2013:1750 - qemu-kvm bug fix update

Synopsis

qemu-kvm bug fix update

Type/Severity

Bug Fix Advisory (none)

Topic

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

Description

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. qemu-kvm is the user-space component for running virtual machines using KVM.

This update fixes the following bugs:

  • Recent changes to the block layer resulted in a disk I/O performance degradation due to the way block length is calculated and cached internally. This update improves the logic for calculating such lengths and restores performance to the expected levels. (BZ#1025596)

  • Due to a regression, the "qemu-img info" command took too much time to respond with the "cluster_size=512,preallocation=metadata" option. This bug has been fixed and "qemu-img info" now responds within one second. (BZ#1029327)

  • On images created with very small non-standard cluster sizes (for example, 512 bytes), the "qemu-img info" command could take a long time to respond if run immediately after an image creation. This bug has been fixed, and "qemu-img info" now works as expected. (BZ#1029327)

  • When doing live migration with the "--copy-storage-all" option, the virsh user interface failed with the following error message:

    "error: Unable to read from monitor: Connection reset by peer"

This bug, caused by a regression, has been fixed, and live migration now finishes successfully. (BZ#1029329)

  • Previously, qemu (for example, the "qemu-img info" command) could not open VMWare ESX image files. A patch fixing this bug has been provided, and ESX images are now handled correctly. (BZ#1028252)

Users of qemu-kvm are advised to upgrade to these updated packages, which fix these bugs.

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

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.5x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.5i386
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - TUS6.5x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.5x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.5i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - AUS6.5x86_64
Red Hat Enterprise Linux EUS Compute Node6.5x86_64
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • qemu-guest-agent-0.12.1.2-2.415.el6_5.3.x86_64.rpm
  • qemu-kvm-tools-0.12.1.2-2.415.el6_5.3.x86_64.rpm
  • qemu-kvm-0.12.1.2-2.415.el6_5.3.src.rpm
  • qemu-kvm-0.12.1.2-2.415.el6_5.3.x86_64.rpm
  • qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.3.x86_64.rpm
  • qemu-img-0.12.1.2-2.415.el6_5.3.x86_64.rpm
  • qemu-guest-agent-0.12.1.2-2.415.el6_5.3.i686.rpm
  • qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.3.i686.rpm

Fixes

CVEs

(none)

References

(none)

Additional information