Hi, I had exactly the same error in my production ceph client node with Jewel 10.2.1 in my case. In the client node : - Ubuntu 14.04 - kernel 3.13.0-92-generic - ceph 10.2.1 (3a66dd4f30852819c1bdaa8ec23c795d4ad77269) - cephfs via _ceph-fuse_ In the cluster node : - Ubuntu 14.04 - kernel 3.13.0-92-generic - ceph 10.2.1 (3a66dd4f30852819c1bdaa8ec23c795d4ad77269) It was during the execution of a very basic Python (2.7.6) script which makes some os.makedirs(...) and os.chown(...). Just in case, the logs are below. I'm sorry they are not verbose at all and so probably useless for you... Which settings should I put in my client and cluster configuration to have relevant logs if the same error happens again? Regards. François Lafont Here are the logs: 1. In the client node: http://francois-lafont.ac-versailles.fr/misc/ceph-client.cephfs.log.1.gz 2. In the (active) mds node: ----%<----%<----%<----%<----%<----%<----%<----%<---- ~$ sudo zcat /var/log/ceph/ceph-mds.ceph02.log.1.gz 2016-08-22 15:02:03.799037 7f3f9adc1700 0 -- 10.0.2.102:6800/2186 >> 192.168.23.11:0/431481110 pipe(0x7f3fb3a87400 sd=22 :6800 s=2 pgs=64 cs=1 l=0 c=0x7f3fb5f10900).fault with nothing to send, going to standby 2016-08-22 15:02:40.236001 7f3f9f7d3700 0 log_channel(cluster) log [WRN] : 1 slow requests, 1 included below; oldest blocked for > 34.503993 secs 2016-08-22 15:02:40.236026 7f3f9f7d3700 0 log_channel(cluster) log [WRN] : slow request 34.503993 seconds old, received at 2016-08-22 15:02:05.731897: client_request(client.1442720:650326 getattr pAsLsXsFs #1000001b6d0 2016-08-22 15:02:05.731515) currently failed to rdlock, waiting 2016-08-22 15:07:00.245269 7f3f9f7d3700 0 log_channel(cluster) log [INF] : closing stale session client.1433176 192.168.23.11:0/431481110 after 304.132797 2016-08-22 15:23:07.970215 7f3f9adc1700 0 -- 10.0.2.102:6800/2186 >> 192.168.23.11:0/2607326748 pipe(0x7f3fff365400 sd=22 :6800 s=2 pgs=8 cs=1 l=0 c=0x7f3fb5f10a80).fault, server, going to standby 2016-08-22 15:28:05.281489 7f3f9f7d3700 0 log_channel(cluster) log [INF] : closing stale session client.1537178 192.168.23.11:0/2607326748 after 300.588323 ----%<----%<----%<----%<----%<----%<----%<----%<---- _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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