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 ?

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.

thanks Zvi Dubitzky Email:dubi@il.ibm.com From: Osier Yang <jyang(a)redhat.com&gt; To: Zvi Dubitzky/Haifa/IBM@IBMIL Cc: libvir-list(a)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 -- libvir-list mailing list libvir-list(a)redhat.com https://www.redhat.com/mailman/listinfo/libvir-list