Thanks Dan for your critical eye. Somehow I did not notice that there was already a tracker for it. Cheers G. ________________________________________ From: Dan van der Ster [d...@vanderster.com] Sent: 06 December 2016 19:30 To: Goncalo Borges Cc: ceph-us...@ceph.com Subject: Re: [ceph-users] segfault in ceph-fuse when quota is enabled
Hi Goncalo, That bug is fixed in 10.2.4. See http://tracker.ceph.com/issues/16066 -- Dan On Tue, Dec 6, 2016 at 5:11 AM, Goncalo Borges <goncalo.bor...@sydney.edu.au> wrote: > Hi John, Greg, Zheng > > And now a much more relevant problem. Once again, my environment: > > - ceph/cephfs in 10.2.2 but patched for > o client: add missing client_lock for get_root > (https://github.com/ceph/ceph/pull/10027) > o Jewel: segfault in ObjectCacher::FlusherThread > (http://tracker.ceph.com/issues/16610) > - All infrastructure is in the same version (rados cluster, mons, mds and > cephfs clients). > - We mount cephfs using ceph-fuse. > > Once we enabled quota in the clients (by using --client-quota), and exposed > the filesystem to the workload of our users, we got systematic segfaults. We > are able to reproduce them every time by asking the user to launch always the > same workload . Please note that the segfault systematically happens in the > clients where the quota is enabled. We still have a very few where it was not > possible to remount cephfs (because they were being heavily used), and in > those, no segfaults happen. > > Running ceph-fuse in debug mode, and with 'debug client = 20', we got > > 0> 2016-12-06 03:45:45.102680 7f40d3fff700 -1 client/Client.cc: In > function 'Inode* Client::get_quota_root(Inode*)' thread 7f40d3fff700 time > 2016-12-06 03:45:45.101937 > client/Client.cc: 12049: FAILED assert(root_ancestor->qtree == __null) > > ceph version 10.2.2 (45107e21c568dd033c2f0a3107dec8f0b0e58374) > 1: (ceph::__ceph_assert_fail(char const*, char const*, int, char > const*)+0x8b) [0x7f410845671b] > 2: (Client::get_quota_root(Inode*)+0x7c5) [0x7f4108291315] > 3: (Client::check_quota_condition(Inode*, std::function<bool (Inode > const&)>)+0x3d) [0x7f410829193d] > 4: (Client::is_quota_bytes_exceeded(Inode*, long)+0x6e) [0x7f4108291ade] > 5: (Client::_write(Fh*, long, unsigned long, char const*, iovec const*, > int)+0xce3) [0x7f41082a7323] > 6: (Client::ll_write(Fh*, long, long, char const*)+0x94) [0x7f41082a87b4] > 7: (()+0x197b46) [0x7f4108262b46] > 8: (()+0x15294) [0x7f4107c82294] > 9: (()+0x15b76) [0x7f4107c82b76] > 10: (()+0x12aa9) [0x7f4107c7faa9] > 11: (()+0x3db6a07aa1) [0x7f4106db8aa1] > 12: (clone()+0x6d) [0x7f4106046aad] > NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to > interpret this. > > Just opened a new tracker: http://tracker.ceph.com/issues/18152 > > In the meantime, we will remove the --client-quota option. > > Cheers > Goncalo > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
