[libvirt] virsh sechedinfo/memtune with libvirt-0.8.8

[Dave Allan]

On Thu, Mar 31, 2011 at 12:00:32PM +0200, Zvi Dubitzky wrote:
> Hi
> The  bugzilla  advice/patch below is not relevant here . Please see what 
> is the reason for virsh schedinfo / memtune  not woking with libvirt-0.8.8 
> and  libcgroup-0.36 while it does work with libvirt-0.8.3 and same 
> libcgroup . 
> Please dispatch to the appropriate person if you know the guy in charge.

Given what little information you've provided, it's very difficult to
do anything other than speculate about the cause of your problem, but
perhaps you're hitting:

https://bugzilla.redhat.com/show_bug.cgi?id=689030

Dave

> thanks
> 
> Zvi Dubitzky 
> Email:dubi at il.ibm.com
> 
> 
> 
> 
> From:   Osier Yang <jyang at redhat.com>
> To:     Zvi Dubitzky/Haifa/IBM at IBMIL
> Cc:     libvir-list at redhat.com
> Date:   28/03/2011 07:40
> Subject:        Re: [libvirt] virsh sechedinfo/memtune  with libvirt-0.8.8
> 
> 
> 
> 于 2011年03月28日 12:52, Zvi Dubitzky 写道:
> > Sorry . I have'nt got an answer from the user's list .
> >
> > I have fedora14 installed with  its standard libvirt-0.8.3.  I can start
> > VM
> > using .xml files and also run: virsh schedinfo. the cgroup CPU
> > controller is mounted and active . In fact I  have the path to the 
> Virtual
> >
> > machine :   /dev/cgroup/cpu/libvirt/qemu/<vm name>
> >
> > I now upgraded to libvirt-0.8.8 from a tar ball ( configure , make , 
> make
> > install) .  I rebooted , new libvirtd started . virsh is working ok
> > (I can create a vm) except  for the commands : schedinfo and memtune 
> that
> > e.g.
> > say upon  ' virsh schedinfo<vm name>'
> >
> > Scheduler      : Unknown
> > error: Requested operation is not valid: cgroup CPU controller is not
> > mounted
> >
> > But the CPU controller is mounted because I have the path :
> > /dev/cgroup/cpu/libvirt/qemu/  .
> > What I am missing is the<vm_name>  group which  is not generated despite
> > that the VM was generated ok by virsh create and I can access it.
> >
> > Any idea what is missing  ?
> 
> AFAIK, it's some problem of libcgroup:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=640282
> 
> Guess following will work for you:
> 
> # cgclear
> # cgconfigparser -l /etc/cgconfig.conf
> 
> Regards
> Osier
> 
> 
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