RHBA-2015:1441 - Bug Fix Advisory

Topic

Updated numad packages that fix two bugs are now available for Red Hat
Enterprise Linux 6.

Description

The numad packages provide a daemon for Non-Uniform Memory Architecture (NUMA)
systems, monitors NUMA characteristics, and manages placement of processes and
memory to minimize memory latency. The packages also provide an interface that
can be used to query the numad daemon for the best manual placement of an
application.

• Previously, the numad daemon could run out of file descriptors. When upgrading

numad on KVM-Hypervisor, the following error messages were returned, after which
numad terminated unexpectedly:

Could not write 1 to
/cgroup/cpuset/libvirt/qemu/vm_name/emulator/cpuset.mems -- errno: 13

The underlying source code has been fixed, and numad no longer crashes in this
situation. (BZ#1150585)

• Prior to this update, superfluous quotes in the numad initscript confused the

daemon() function, which subsequently constructed a wrong argument. As a
consequence, the following error message was returned:

Starting numad: /usr/bin/dirname: extra operand `-i'
Try `/usr/bin/dirname --help' for more information.

A patch removing the quotes around daemon() parameters fixes this bug, and the
error messages are no longer returned. (BZ#1186724)

Users of numad 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.

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 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 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 Power, big endian 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

Fixes

• BZ - 1150585 - numad dies after number of "Could not write 1 to /cgroup/cpuset/libvirt/qemu/vm_name/emulator/cpuset.mems -- errno: 13" errors
• BZ - 1186724 - numad initscript confuses daemon function

CVEs

(none)

References

(none)