On Wed, Dec 30, 2015 at 5:59 AM, Mykola Dvornik <mykola.dvornik@xxxxxxxxx> wrote: > Hi guys, > > I have 16 OSD/1MON/1MDS ceph cluster serving CephFS. > > The FS is mounted on 11 clients using ceph-fuse. In some cases there are > multiple ceph-fuse processes per client, each with its own '-r' option. > > The problem is that some of the clients get significantly out-of-sync. > Flushing caches, 'touching' things, etc. does not help. what is the symptom of "out-of-sync"? > > ceph -s reports 'Client XXX failing to respond to cache pressure'. > > Although I've increased "mds_cache_size" to "1000000", perf dump mds still > reports inodes exceeding the inode_max. I cannot confirm yet, but it appears > to me that the out-of-sync issue started to appear since the mds_cache_size > increase. which version of ceph-mds/ceph-fuse are you using? > > mds log does not have anything suspicious in it. > > So is there any way to debug ceph-fuse? you enable client debug by "--debug_client=20' option, you > > Regards, > > -- > Mykola > > _______________________________________________ > 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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