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warning: Can't read pathname for load map: Input/output error.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `ceph-mds -f -i a'.
Program terminated with signal 11, Segmentation fault.
#0 0x00007fa57b7bbb7b in raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:42
42 ../nptl/sysdeps/unix/sysv/linux/pt-raise.c: No such file or directory.
(gdb) bt
#0 0x00007fa57b7bbb7b in raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:42
#1 0x0000000000984cce in reraise_fatal (signum=11) at global/signal_handler.cc:59
#2 handle_fatal_signal (signum=11) at global/signal_handler.cc:105
#3 <signal handler called>
#4 0x0000000000000000 in ?? ()
#5 0x0000000000574ab9 in put (this=0x3f9ad80) at ./common/RefCountedObj.h:36
#6 put (this=0x3f9ad80) at mds/MDS.cc:2177
#7 MDS::ms_handle_accept (this=0x2e63000, con=0x35b4580) at mds/MDS.cc:2182
#8 0x00000000009522dd in ms_deliver_handle_accept (con=<optimized out>, this=<optimized out>) at msg/Messenger.h:618
#9 DispatchQueue::entry (this=0x2e5d0e8) at msg/DispatchQueue.cc:97
#10 0x000000000087685d in DispatchQueue::DispatchThread::entry (this=<optimized out>) at msg/DispatchQueue.h:104
#11 0x00007fa57b7b3e9a in start_thread (arg=0x7fa577a43700) at pthread_create.c:308
#12 0x00007fa579d534bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()
(gdb) q
root@plana36:~# exit
ubuntu@plana36:~$ logout
Connection to plana36 closed.
ubuntu@teuthology:/var/lib/teuthworker/archive/teuthology-2013-08-03_01:01:27-kcephfs-next-testing-basic-plana/95029$