Ceph

I got a crash after restarting that osd, same stacktrace (if you ignore line numbers difference due to your recent commit):

#0  0x00007fbc5be06a75 in raise () from /lib/libc.so.6
#1  0x00007fbc5be0a5c0 in abort () from /lib/libc.so.6
#2  0x00007fbc5c6bb8e5 in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/libstdc++.so.6
#3  0x00007fbc5c6b9d16 in ?? () from /usr/lib/libstdc++.so.6
#4  0x00007fbc5c6b9d43 in std::terminate() () from /usr/lib/libstdc++.so.6
#5  0x00007fbc5c6b9e3e in __cxa_throw () from /usr/lib/libstdc++.so.6
#6  0x00000000005b3a08 in ceph::__ceph_assert_fail (assertion=0x5ec3d2 "seq >= last_committed_seq", file=<value optimized out>, line=711, func=<value optimized out>) at common/assert.cc:30
#7  0x00000000005649f1 in FileJournal::committed_thru (this=0x1def3c0, seq=0) at os/FileJournal.cc:711
#8  0x000000000055d265 in JournalingObjectStore::commit_finish (this=0x1df5740) at os/JournalingObjectStore.cc:189
#9  0x00000000005543f3 in FileStore::sync_entry (this=0x1df5740) at os/FileStore.cc:1714
#10 0x00000000004ef93d in FileStore::SyncThread::entry() ()
#11 0x0000000000469a4a in Thread::_entry_func (arg=0x6c0b) at ./common/Thread.h:39
#12 0x00007fbc5cc999ca in start_thread () from /lib/libpthread.so.0
#13 0x00007fbc5beb96cd in clone () from /lib/libc.so.6
#14 0x0000000000000000 in ?? ()

Should your patch fix the actual problem, or its cause? i.e., should I expect my osd to restart, or should I reformat?

just in case, on frame 7:

(gdb) p seq
$1 = 0
(gdb) p last_committed_seq
$2 = 1975

Oh.. it may have written the bad (0) value to current/commit_op_seq. Can you confirm that file has 0 in it? If so, then you either need to re-mkfs, or probably

$ echo 1975 > current/commit_op_seq

will do the trick.