On Mon, Jan 21, 2019 at 11:43 AM ST Wong (ITSC) <ST@xxxxxxxxxxxxxxxx> wrote: > > Hi, we’re trying mimic on an VM farm. It consists 4 OSD hosts (8 OSDs) and 3 MON. We tried mounting as RBD and CephFS (fuse and kernel mount) on different clients without problem. Is this an upgraded or a fresh cluster? > > Then one day we perform failover test and stopped one of the OSD. Not sure if it’s related but after that testing, the RBD client freeze when trying to mount the rbd device. > > > > Steps to reproduce: > > > > # modprobe rbd > > > > (dmesg) > > [ 309.997587] Key type dns_resolver registered > > [ 310.043647] Key type ceph registered > > [ 310.044325] libceph: loaded (mon/osd proto 15/24) > > [ 310.054548] rbd: loaded > > > > # rbd -n client.acapp1 map 4copy/foo > > /dev/rbd0 > > > > # rbd showmapped > > id pool image snap device > > 0 4copy foo - /dev/rbd0 > > > > > > Then hangs if I tried to mount or reboot the server after rbd map. There are lot of error in dmesg, e.g. > > > > Jan 20 03:43:32 acapp1 kernel: rbd: rbd0: blacklist of client74700 failed: -13 > > Jan 20 03:43:32 acapp1 kernel: rbd: rbd0: failed to acquire lock: -13 > > Jan 20 03:43:32 acapp1 kernel: rbd: rbd0: no lock owners detected > > Jan 20 03:43:32 acapp1 kernel: rbd: rbd0: client74700 seems dead, breaking lock > > Jan 20 03:43:32 acapp1 kernel: rbd: rbd0: blacklist of client74700 failed: -13 > > Jan 20 03:43:32 acapp1 kernel: rbd: rbd0: failed to acquire lock: -13 > > Jan 20 03:43:32 acapp1 kernel: rbd: rbd0: no lock owners detected Does client.acapp1 have the permission to blacklist other clients? You can check with "ceph auth get client.acapp1". If not, follow step 6 of http://docs.ceph.com/docs/master/releases/luminous/#upgrade-from-jewel-or-kraken. Thanks, Ilya _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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