replicatedPG assert fails

[Sugang Li <sugangli@winlab.rutgers.edu>]

Hi all,

I am working on a research project which requires multiple write
operations for the same object at the same time from the client. At
the OSD side, I got this error:
osd/ReplicatedPG.cc: In function 'int
ReplicatedPG::find_object_context(const hobject_t&, ObjectContextRef*,
bool, bool, hobject_t*)' thread 7f0586193700 time 2016-07-21
14:02:04.218448
osd/ReplicatedPG.cc: 9041: FAILED assert(oid.pool ==
static_cast<int64_t>(info.pgid.pool()))
 ceph version 10.2.0-2562-g0793a28 (0793a2844baa38f6bcc5c1724a1ceb9f8f1bbd9c)
 1: (ceph::__ceph_assert_fail(char const*, char const*, int, char
const*)+0x8b) [0x7f059fe6dd7b]
 2: (ReplicatedPG::find_object_context(hobject_t const&,
std::shared_ptr<ObjectContext>*, bool, bool, hobject_t*)+0x1dbb)
[0x7f059f9296fb]
 3: (ReplicatedPG::do_op(std::shared_ptr<OpRequest>&)+0x186e) [0x7f059f959d7e]
 4: (ReplicatedPG::do_request(std::shared_ptr<OpRequest>&,
ThreadPool::TPHandle&)+0x73c) [0x7f059f916a0c]
 5: (OSD::dequeue_op(boost::intrusive_ptr<PG>,
std::shared_ptr<OpRequest>, ThreadPool::TPHandle&)+0x3f5)
[0x7f059f7ced65]
 6: (PGQueueable::RunVis::operator()(std::shared_ptr<OpRequest>
const&)+0x5d) [0x7f059f7cef8d]
 7: (OSD::ShardedOpWQ::_process(unsigned int,
ceph::heartbeat_handle_d*)+0x86c) [0x7f059f7f003c]
 8: (ShardedThreadPool::shardedthreadpool_worker(unsigned int)+0x947)
[0x7f059fe5e007]
 9: (ShardedThreadPool::WorkThreadSharded::entry()+0x10) [0x7f059fe60160]
 10: (()+0x8184) [0x7f059e2d2184]
 11: (clone()+0x6d) [0x7f059c1e337d]

And at the client side, I got segmentation fault.

I am wondering what will be the possible reason that cause the assert fail?

Thanks,

Sugang