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. 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. mds log does not have anything suspicious in it. So is there any way to debug ceph-fuse? Regards, -- Mykola
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