I pushed a commit to wip-newstore-debuglist.. can you reproduce the crash 
with that branch with 'debug newstore = 20' and send us the log?  
(You can just do 'ceph-post-file <filename>'.)

Thanks!
sage

On Mon, 1 Jun 2015, Srikanth Madugundi wrote:

> Hi Sage,
> 
> The assertion failed at line 1639, here is the log message
> 
> 
> 2015-05-30 23:17:55.141388 7f0891be0700 -1 os/newstore/NewStore.cc: In
> function 'virtual int NewStore::collection_list_partial(coll_t,
> ghobject_t, int, int, snapid_t, std::vector<ghobject_t>*,
> ghobject_t*)' thread 7f0891be0700 time 2015-05-30 23:17:55.137174
> 
> os/newstore/NewStore.cc: 1639: FAILED assert(k >= start_key && k < end_key)
> 
> 
> Just before the crash the here are the debug statements printed by the
> method (collection_list_partial)
> 
> 2015-05-30 22:49:23.607232 7f1681934700 15
> newstore(/var/lib/ceph/osd/ceph-7) collection_list_partial 75.0_head
> start -1/0//0/0 min/max 1024/1024 snap head
> 2015-05-30 22:49:23.607251 7f1681934700 20
> newstore(/var/lib/ceph/osd/ceph-7) collection_list_partial range
> --.7fffffffffffffb4.00000000. to --.7fffffffffffffb4.08000000. and
> --.800000000000004b.00000000. to --.800000000000004b.08000000. start
> -1/0//0/0
> 
> 
> Regards
> Srikanth
> 
> On Mon, Jun 1, 2015 at 8:54 PM, Sage Weil <s...@newdream.net> wrote:
> > On Mon, 1 Jun 2015, Srikanth Madugundi wrote:
> >> Hi Sage and all,
> >>
> >> I build ceph code from wip-newstore on RHEL7 and running performance
> >> tests to compare with filestore. After few hours of running the tests
> >> the osd daemons started to crash. Here is the stack trace, the osd
> >> crashes immediately after the restart. So I could not get the osd up
> >> and running.
> >>
> >> ceph version b8e22893f44979613738dfcdd40dada2b513118
> >> (eb8e22893f44979613738dfcdd40dada2b513118)
> >> 1: /usr/bin/ceph-osd() [0xb84652]
> >> 2: (()+0xf130) [0x7f915f84f130]
> >> 3: (gsignal()+0x39) [0x7f915e2695c9]
> >> 4: (abort()+0x148) [0x7f915e26acd8]
> >> 5: (__gnu_cxx::__verbose_terminate_handler()+0x165) [0x7f915eb6d9d5]
> >> 6: (()+0x5e946) [0x7f915eb6b946]
> >> 7: (()+0x5e973) [0x7f915eb6b973]
> >> 8: (()+0x5eb9f) [0x7f915eb6bb9f]
> >> 9: (ceph::__ceph_assert_fail(char const*, char const*, int, char
> >> const*)+0x27a) [0xc84c5a]
> >> 10: (NewStore::collection_list_partial(coll_t, ghobject_t, int, int,
> >> snapid_t, std::vector<ghobject_t, std::allocator<ghobject_t> >*,
> >> ghobject_t*)+0x13c9) [0xa08639]
> >> 11: (PGBackend::objects_list_partial(hobject_t const&, int, int,
> >> snapid_t, std::vector<hobject_t, std::allocator<hobject_t> >*,
> >> hobject_t*)+0x352) [0x918a02]
> >> 12: (ReplicatedPG::do_pg_op(std::tr1::shared_ptr<OpRequest>)+0x1066) 
> >> [0x8aa906]
> >> 13: (ReplicatedPG::do_op(std::tr1::shared_ptr<OpRequest>&)+0x1eb) 
> >> [0x8cd06b]
> >> 14: (ReplicatedPG::do_request(std::tr1::shared_ptr<OpRequest>&,
> >> ThreadPool::TPHandle&)+0x68a) [0x85dbea]
> >> 15: (OSD::dequeue_op(boost::intrusive_ptr<PG>,
> >> std::tr1::shared_ptr<OpRequest>, ThreadPool::TPHandle&)+0x3ed)
> >> [0x6c3f5d]
> >> 16: (OSD::ShardedOpWQ::_process(unsigned int,
> >> ceph::heartbeat_handle_d*)+0x2e9) [0x6c4449]
> >> 17: (ShardedThreadPool::shardedthreadpool_worker(unsigned int)+0x86f) 
> >> [0xc746bf]
> >> 18: (ShardedThreadPool::WorkThreadSharded::entry()+0x10) [0xc767f0]
> >> 19: (()+0x7df3) [0x7f915f847df3]
> >> 20: (clone()+0x6d) [0x7f915e32a01d]
> >> NOTE: a copy of the executable, or `objdump -rdS <executable>` is
> >> needed to interpret this.
> >>
> >> Please let me know the cause of this crash, when this crash happens I
> >> noticed that two osds on separate machines are down. I can bring one
> >> osd up but restarting the other osd causes both OSDs to crash. My
> >> understanding is the crash seems to happen when two OSDs try to
> >> communicate and replicate a particular PG.
> >
> > Can you include the log lines that preceed the dump above?  In particular,
> > there should be a line that tells you what assertion failed in what
> > function and at what line number.  I haven't seen this crash so I'm not
> > sure offhand what it is.
> >
> > Thanks!
> > sage
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