2010/10/29 Ronald Moesbergen <intercom...@gmail.com>: > 2010/10/29 Tao Ma <tao...@oracle.com>: >> Hi Ronald, > > Hi Tao, > > Thanks for looking into this. > >> On 10/29/2010 05:12 PM, Ronald Moesbergen wrote: >>> >>> Hello, >>> >>> I was testing kernel 2.6.36 (vanilla mainline) and encountered the >>> following BUG(): >>> >>> [157756.266000] o2net: no longer connected to node app01 (num 0) at >>> 10.2.25.13:7777 >>> [157756.266077] (o2hb-5FA56B1D0A,2908,0):o2dlm_eviction_cb:267 o2dlm >>> has evicted node 0 from group 5FA56B1D0A9249099CE58C82CFEC873A >>> [157756.274443] (ocfs2rec,14060,0):dlm_get_lock_resource:836 >>> 5FA56B1D0A9249099CE58C82CFEC873A:M00000000000000000000186ba2b09b: at >>> least one node (0) to recover before lock mastery can begin >>> [157757.275776] (ocfs2rec,14060,0):dlm_get_lock_resource:890 >>> 5FA56B1D0A9249099CE58C82CFEC873A:M00000000000000000000186ba2b09b: at >>> least one node (0) to recover before lock mastery can begin >>> [157760.774045] (dlm_reco_thread,2920,2):dlm_get_lock_resource:836 >>> 5FA56B1D0A9249099CE58C82CFEC873A:$RECOVERY: at least one node (0) to >>> recover before lock mastery can begin >>> [157760.774124] (dlm_reco_thread,2920,2):dlm_get_lock_resource:870 >>> 5FA56B1D0A9249099CE58C82CFEC873A: recovery map is not empty, but must >>> master $RECOVERY lock now >>> [157760.774205] (dlm_reco_thread,2920,2):dlm_do_recovery:523 (2920) >>> Node 1 is the Recovery Master for the Dead Node 0 for Domain >>> 5FA56B1D0A9249099CE58C82CFEC873A >>> [157768.261818] (ocfs2rec,14060,0):ocfs2_replay_journal:1605 >>> Recovering node 0 from slot 0 on device (8,32) >>> [157772.850182] ------------[ cut here ]------------ >>> [157772.850211] kernel BUG at fs/ocfs2/journal.c:1700! >> >> Strange. the bug line is >> BUG_ON(osb->node_num == node_num); >> and it detects the same node number in the cluster.
I just tried to reproduce it and succeeded. Here's what I did: - unmount the filesystem on node app02 - shutdown the o2cb services on app02 - Do a halt -f on app01, which still has the OCFS2 volume mounted. - Start o2cb services on app02 - Mount the OCFS2 filesystem -> BUG Works everytime. So one of the 2 variables checked in that BUG_ON statement must no be set correctly somewhere. Regards, Ronald. _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users