[libvirt-users] Information needed regarding the libvirt version libvirt-1.0.6-1

arun abhinay arun.abhinay at gmail.com
Wed Aug 21 07:06:21 UTC 2013


Hi,

We have upgraded the libvirt version from libvirt-1.0.5 to libvirt-1.0.6-1
on our linux machine. After this upgrade "virsh cpu-stats <domain>" command
is not working on our HardWare.

*virsh # cpu-stats test
error: Failed to retrieve CPU statistics for domain 'test'
error: internal error error accessing cgroup cpuacct for vcpu*
**
*# cat /proc/cgroups
#subsys_name    hierarchy       num_cgroups     enabled
cpuset  3       4       1
ns      0       1       1
cpu     1       6       1
cpuacct 7       3       1
memory  2       3       1
freezer 0       1       1
net_cls 0       1       1
blkio   0       1       1
*
*# chkconfig --list | grep cg
cgroups_mount   0:off   1:on    2:on    3:on    4:on    5:on    6:off*

We have also found that there is no "cgroup" directory created by
kenel under "/sys/fs/".  We suspect that the 'cgroup' controllers are not
mounted properly and hence the issue is observed. While using the
libvirt-1.0.5 version below mentioned mount commands were sufficient to
mount cgroup controllers

*mkdir -p /dev/cgroup_cpuacct
mount -t cgroup -o cpuacct cpuacct /dev/cgroup_cpuacct*

As cgroups hieracrhy inside libvirtd has changed in libvirt-1.0.6-1, we
feel that the above commands are now not sufficient. We feel we have to do
some more steps get the 'cgroups' mounted properly on our hardware.

Since we are new to libvirt and can you please help us by providing some
pointers to fix the above issue and get cpu-stats working on our HardWare.
Since we have to fix this on top priority, can you please reply as soon as
possible. Please let us know if you need any further information from our
side.

Thanks in advance.

BR
Abhinay
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