All three mons has value "simple". > 21 июля 2017 г., в 15:47, Ilya Dryomov <idryo...@gmail.com> написал(а): > > On Thu, Jul 20, 2017 at 6:35 PM, Дмитрий Глушенок <gl...@jet.msk.su > <mailto:gl...@jet.msk.su>> wrote: >> Hi Ilya, >> >> While trying to reproduce the issue I've found that: >> - it is relatively easy to reproduce 5-6 minutes hangs just by killing >> active mds process (triggering failover) while writing a lot of data. >> Unacceptable timeout, but not the case of >> http://tracker.ceph.com/issues/15255 >> - it is hard to reproduce the endless hang (I've spent an hour without >> success) >> >> One thing I've noticed analysing logs is that "endless hang" always was >> accompanied with following messages: >> >> Jul 20 15:31:57 mn-ceph-nfs-gw-01 kernel: libceph: mon0 10.50.67.25:6789 >> session lost, hunting for new mon >> Jul 20 15:31:57 mn-ceph-nfs-gw-01 kernel: libceph: mon1 10.50.67.26:6789 >> session established >> Jul 20 15:32:27 mn-ceph-nfs-gw-01 kernel: libceph: mon1 10.50.67.26:6789 >> session lost, hunting for new mon >> Jul 20 15:32:27 mn-ceph-nfs-gw-01 kernel: libceph: mon2 10.50.67.27:6789 >> session established >> Jul 20 15:32:57 mn-ceph-nfs-gw-01 kernel: libceph: mon2 10.50.67.27:6789 >> session lost, hunting for new mon >> Jul 20 15:32:57 mn-ceph-nfs-gw-01 kernel: libceph: mon0 10.50.67.25:6789 >> session established >> Jul 20 15:33:28 mn-ceph-nfs-gw-01 kernel: libceph: mon0 10.50.67.25:6789 >> session lost, hunting for new mon >> Jul 20 15:33:28 mn-ceph-nfs-gw-01 kernel: libceph: mon2 10.50.67.27:6789 >> session established >> Jul 20 15:33:58 mn-ceph-nfs-gw-01 kernel: libceph: mon2 10.50.67.27:6789 >> session lost, hunting for new mon >> Jul 20 15:34:29 mn-ceph-nfs-gw-01 kernel: libceph: mon2 10.50.67.27:6789 >> session established >> >> >> Bug http://tracker.ceph.com/issues/17664 describes such behaviour and it was >> fixed in releases starting with v11.1.0 (I'm using 10.2.7). So, the lost >> session somehow triggers client disconnection and fencing (as described at >> http://docs.ceph.com/docs/master/cephfs/troubleshooting/#disconnected-remounted-fs). >> >> Do you still think it should be posted to >> http://tracker.ceph.com/issues/15255 ? > > Are you using async messenger? You can check with > > $ ceph daemon mon.X config get ms_type > > for all MONs. > > Thanks, > > Ilya
-- Дмитрий Глушенок Инфосистемы Джет +7-910-453-2568
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