On 9 October 2017 at 19:21, Jake Grimmett <jog@xxxxxxxxxxxxxxxxx> wrote: > HEALTH_WARN 9 clients failing to advance oldest client/flush tid; > 1 MDSs report slow requests; 1 MDSs behind on trimming On a proof-of-concept 12.2.1 cluster (few random files added, 30 OSDs, default Ceph settings) I can get the above error by doing this from a client: bonnie++ -s 0 -n 1000 -u 0 This makes 1 million files in a single directory (we wanted to see what might break). This takes a few hours to run but seems to finish without incident. Over that time we get this in the logs: root@c0mon-101:/var/log/ceph# zcat ceph-mon.c0mon-101.log.6.gz|fgrep MDS_TRIM 2017-10-04 11:14:18.489943 7ff914a26700 0 log_channel(cluster) log [WRN] : Health check failed: 1 MDSs behind on trimming (MDS_TRIM) 2017-10-04 11:14:22.523117 7ff914a26700 0 log_channel(cluster) log [INF] : Health check cleared: MDS_TRIM (was: 1 MDSs behind on trimming) 2017-10-04 11:14:26.589797 7ff914a26700 0 log_channel(cluster) log [WRN] : Health check failed: 1 MDSs behind on trimming (MDS_TRIM) 2017-10-04 11:14:34.614567 7ff914a26700 0 log_channel(cluster) log [INF] : Health check cleared: MDS_TRIM (was: 1 MDSs behind on trimming) 2017-10-04 20:38:22.812032 7ff914a26700 0 log_channel(cluster) log [WRN] : Health check failed: 1 MDSs behind on trimming (MDS_TRIM) 2017-10-04 20:41:14.700521 7ff914a26700 0 log_channel(cluster) log [INF] : Health check cleared: MDS_TRIM (was: 1 MDSs behind on trimming) root@c0mon-101:/var/log/ceph# _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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