For everybody else's reference, this is addressed in http://tracker.ceph.com/issues/10944. That kernel has several known bugs. -Greg On Tue, Feb 24, 2015 at 12:02 PM, Ilja Slepnev <islepnev@xxxxxxxxx> wrote: > Dear All, > > Configuration of MDS and CephFS client is the same: > OS: CentOS 7.0.1406 > ceph-0.87 > Linux 3.10.0-123.20.1.el7.centos.plus.x86_64 > dmesg: libceph: loaded (mon/osd proto 15/24) > dmesg: ceph: loaded (mds proto 32) > Using kernel ceph module, fstab mount options: > defaults,_netdev,ro,noatime,name=admin,secret=<hidden> > CephFS mount is exported by NFS. > > Problem: > After period of light activity (reading files, listing dirs) one of the > cephfs paths got stuck in directory listing process, on local machine and > via NFS. > > Log messages on MDS (repeating): > 2015-02-24 16:02:41.564071 7fdb0055c700 0 log_channel(default) log [WRN] : > 9 slow requests, 1 included below; oldest blocked for > 14463.448519 secs > 2015-02-24 16:02:41.564077 7fdb0055c700 0 log_channel(default) log [WRN] : > slow request 1922.318256 seconds old, received at 2015-02-24 > 15:30:39.245786: client_request(client.66401597:2440 getattr pAsLsXsFs > #10000002d68) currently failed to rdlock, waiting > > Could it be a broken metadata, or a bug? How to find out what is going > wrong? > > Is there a workaround? > > WBR, > Ilja Slepnev > > _______________________________________________ > 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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