Markus, I saw similar issues. Looks like it's related to multidisk VMs under high disk load. No relations with guest OS. No relations with IO threads.
I didn't debug it. Can you please show a backtrace of a thread in __lll_lock_wait ? On 11/04/16 18:13, "users-boun...@ovirt.org on behalf of Markus Stockhausen" <users-boun...@ovirt.org on behalf of stockhau...@collogia.de> wrote: >Hi there, > >I'm getting slowly mad about our new Centos 7 cluster. Whenever >I start a live merge the machine completely freezes. It seems to be >independent of the Guest OS (tried SLES 11 SP3, SLES11 SP4 and >SLES12). I already opened BZ1319400 because I'm clueless. > >Doing the same in our Fedora 20 cluster (qemu 2.1.3) we only see >small hiccups of 1-3 seconds at the start of the live merge but no >complete stall. Its the same VM! > >Just to be sure that it is not a specific problem of our topology >or SLES I would like to receive some feedback of the list if anyone >observes similar lockups in their environment. > >Thanks in advance. > >Markus > _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users