Ceph » rbd

http://qa-proxy.ceph.com/teuthology/teuthology-2015-04-19_02:35:02-smoke-master-distro-basic-multi/853928/teuthology.log

From rbd export non-existent-image:

#0  0x00007f5901d98e2b in raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:41
#1  0x00000000008f76b7 in reraise_fatal (signum=11) at global/signal_handler.cc:59
#2  0x00000000008f7a10 in handle_fatal_signal (signum=11) at global/signal_handler.cc:109
#3  <signal handler called>
#4  0x00007f5904dc408f in PerfCounters::inc (this=0x0, idx=26010, amt=1) at common/perf_counters.cc:142
#5  0x00007f5904c38c2d in librbd::flush (ictx=0x7f58f4001340) at librbd/internal.cc:3460
#6  0x00007f5904c32030 in librbd::close_image (ictx=0x7f58f4001340) at librbd/internal.cc:2590
#7  0x00007f5904c31e01 in librbd::open_image (ictx=0x7f58f4001340) at librbd/internal.cc:2569
#8  0x00007f5904bbe3ab in librbd::RBD::open_read_only (this=0x7fff842fcfaf, io_ctx=..., image=..., name=0x32f6410 "blah", snap_name=0x0) at librbd/librbd.cc:119
#9  0x0000000000798f52 in main (argc=3, argv=0x7fff842fd518) at rbd.cc:3283

Due to perf_start() moving later in ImageCtx::init(), if init() fails earlier the PerfCounters will be used by flush() before being initialized.