Re: [ovirt-users] stalls during live Merge Centos 7 / qemu 2.3
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-bounces(a)ovirt.org on behalf of Markus Stockhausen"
<users-bounces(a)ovirt.org on behalf of stockhausen(a)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