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Description of problem:
When use numatune command to set nodeset with '^' for excluding a node,the following error occurs.And it also can be reproduced in libvirt-0.9.13-2.el6.x86_64. It can pass with "\^" , but there isn't any records about it.
error: Unable to change numa parameters
error: unable to set numa tunable: Invalid argument
Quote from man virsh
nodeset is a list of numa nodes used by the host for running the domain. Its syntax is a comma separated list, with ’-’ for ranges and ’^’ for excluding a node.
Version-Release number of selected component (if applicable):
libvirt-0.10.0-0rc0.el6.x86_64
qemu-kvm-0.12.1.2-2.295.el6.x86_64
numad-0.5-4.20120522git.el6.x86_64
kernel-2.6.32-279.el6.x86_64
How reproducible:
Steps to Reproduce:
1. numactl --hardware
available: 8 nodes (0-7)
2.# virsh numatune rhel6q
numa_mode : strict
numa_nodeset : 1
3.virsh numatune rhel6q --nodeset 0-5,^2
error: Unable to change numa parameters
error: unable to set numa tunable: Invalid argument
Actual results:
error: Unable to change numa parameters
error: unable to set numa tunable: Invalid argument
Expected results:
The numatuen is able to set the nodesetwith '^' for excluding a node.
Additional info:
commit 29d8ed7a61a9bf5d971a3111b226474384384bfc
Author: Osier Yang <jyang>
Date: Thu Aug 16 11:35:04 2012 +0800
qemu: Ensure the cpuset is formatted as expected before passing to cgroup
The parameter value for cpuset could be in special format like
"0-10,^7", which is not recognized by cgroup. This patch is to
ensure the cpuset is formatted as expected before passing it to
cgroup. As a side effect, after the patch, it parses the cpuset
early before cgroup setting, to avoid the rollback if cpuset
parsing fails afterwards.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
http://rhn.redhat.com/errata/RHSA-2013-0276.html