Hi Dennis Have you checked http://lists.ceph.com/pipermail/ceph-users-ceph.com/2016-February/007207.html ? The issue there was some near full osd blocking IO. Cheers G. ________________________________________ From: ceph-users [ceph-users-bounces@xxxxxxxxxxxxxx] on behalf of Dennis Kramer (DBS) [dennis@xxxxxxxxx] Sent: 14 September 2016 17:44 To: ceph-users@xxxxxxxxxxxxxx Subject: cephfs/ceph-fuse: mds0: Client XXX:XXX failing to respond to capability release Hi All, Running Ubuntu 16.04, with version JEWEL ceph version 10.2.2 (45107e21c568dd033c2f0a3107dec8f0b0e58374) In our environment we are running cephfs and our clients are connecting through ceph-fuse. Since I have upgraded from Hammer to Jewel I was haunted by the ceph-fuse segfaults, which were resolved by using the patch from https://github.com/ceph/ceph/pull/10027 But lately I'm often getting the error: "mds0: Client XXX:XXX failing to respond to capability release" These clients are always (patched) ceph-fuse clients and are generating the following MDS log error: 2016-09-14 08:06:36.953168 7f07df309700 0 log_channel(cluster) log [WRN] : client.196596070 isn't responding to mclientcaps(revoke), ino 10001d28611 pending pAsLsXsFscr issued pAsLsXsFsxcrwb, sent 30723.302011 seconds ago 2016-09-14 08:29:42.262518 7f07df309700 0 log_channel(cluster) log [WRN] : client.196596070 isn't responding to mclientcaps(revoke), ino 10001d28613 pending pAsxLsXsxFcb issued pAsxLsXsxFcwb, sent 62.097011 seconds ago 2016-09-14 08:30:42.263593 7f07df309700 0 log_channel(cluster) log [WRN] : client.196596070 isn't responding to mclientcaps(revoke), ino 10001d28613 pending pAsxLsXsxFcb issued pAsxLsXsxFcwb, sent 122.098144 seconds ago 2016-09-14 08:32:42.283509 7f07df309700 0 log_channel(cluster) log [WRN] : client.196596070 isn't responding to mclientcaps(revoke), ino 10001d28613 pending pAsxLsXsxFcb issued pAsxLsXsxFcwb, sent 242.118043 seconds ago 2016-09-14 09:37:32.347160 7f07df309700 0 log_channel(cluster) log [INF] : closing stale session client.196596070 10.5.5.83:0/4117427533 after 304.829698 It seems that these clients also trigger blocked requests. Everything is running Jewel code and I have no old clients anymore. My only solution is to restart the client (or forcebly remount). _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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