OSD crashes on EC recovery

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Hi,

we run a Ceph 10.2.1 cluster across 35 nodes with a total of 595 OSDs, we have a mixture of normally replicated volumes and EC volumes using the following erasure-code-profile:

# ceph osd erasure-code-profile get rsk8m5
jerasure-per-chunk-alignment=false
k=8
m=5
plugin=jerasure
ruleset-failure-domain=host
ruleset-root=default
technique=reed_sol_van
w=8

Now we had a disk failure and on swap out we seem to have encountered a bug where during recovery OSDs crash when trying to fix certain pgs that may have been corrupted.

For example:
-3> 2016-08-10 12:38:21.302938 7f893e2d7700 5 -- op tracker -- seq: 3434, time: 2016-08-10 12:38:21.302938, event: queued_for_pg, op: MOSDECSubOpReadReply(63.1a18s0 47661 ECSubReadReply(tid=1, attrs_read=0)) -2> 2016-08-10 12:38:21.302981 7f89bef50700 1 -- 10.93.105.11:6831/2674119 --> 10.93.105.22:6802/357033 -- osd_map(47662..47663 src has 32224..47663) v3 -- ?+0 0x559c1057f3c0 con 0x559c0664a700 -1> 2016-08-10 12:38:21.302996 7f89bef50700 5 -- op tracker -- seq: 3434, time: 2016-08-10 12:38:21.302996, event: reached_pg, op: MOSDECSubOpReadReply(63.1a18s0 47661 ECSubReadReply(tid=1, attrs_read=0)) 0> 2016-08-10 12:38:21.306193 7f89bef50700 -1 osd/ECBackend.cc: In function 'virtual void OnRecoveryReadComplete::finish(std::pair<RecoveryMessages*, ECBackend::read_result_t&>&)' thread 7f89bef50700 time 2016-08-10 12:38:21.303012
osd/ECBackend.cc: 203: FAILED assert(res.errors.empty())

then the ceph-osd daemon goes splat. I've attached an extract of a logfile showing a bit more.

Anyone have any ideas? I'm stuck now with a pg that's stuck as down+remapped+peering. ceph pg query tells me that peering is blocked to the loss of an osd, though restarting it just results in another crash of the ceph-osd daemon. We tried to force a rebuild by using ceph-objectstore-tool to delete the pg segment on some of the OSDs that are crashing but that didn't help one iota.

Any help would be greatly appreciated,

regards,

Roeland

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    -4> 2016-08-10 12:38:21.302910 7f893e2d7700  1 -- 10.93.105.11:6831/2674119 <== osd.290 10.93.105.22:6802/357033 42 ==== MOSDECSubOpReadReply(63.1a18s0 47661 ECSubReadReply(tid=1, attrs_read=0)) v1 ==== 170+0+0 (1521384358 0 0) 0x559bf
b611400 con 0x559c0664a700
    -3> 2016-08-10 12:38:21.302938 7f893e2d7700  5 -- op tracker -- seq: 3434, time: 2016-08-10 12:38:21.302938, event: queued_for_pg, op: MOSDECSubOpReadReply(63.1a18s0 47661 ECSubReadReply(tid=1, attrs_read=0))
    -2> 2016-08-10 12:38:21.302981 7f89bef50700  1 -- 10.93.105.11:6831/2674119 --> 10.93.105.22:6802/357033 -- osd_map(47662..47663 src has 32224..47663) v3 -- ?+0 0x559c1057f3c0 con 0x559c0664a700
    -1> 2016-08-10 12:38:21.302996 7f89bef50700  5 -- op tracker -- seq: 3434, time: 2016-08-10 12:38:21.302996, event: reached_pg, op: MOSDECSubOpReadReply(63.1a18s0 47661 ECSubReadReply(tid=1, attrs_read=0))
     0> 2016-08-10 12:38:21.306193 7f89bef50700 -1 osd/ECBackend.cc: In function 'virtual void OnRecoveryReadComplete::finish(std::pair<RecoveryMessages*, ECBackend::read_result_t&>&)' thread 7f89bef50700 time 2016-08-10 12:38:21.303012
osd/ECBackend.cc: 203: FAILED assert(res.errors.empty())

 ceph version 10.2.1 (3a66dd4f30852819c1bdaa8ec23c795d4ad77269)
 1: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x8b) [0x559be1135e2b]
 2: (OnRecoveryReadComplete::finish(std::pair<RecoveryMessages*, ECBackend::read_result_t&>&)+0x192) [0x559be0cf6122]
 3: (GenContext<std::pair<RecoveryMessages*, ECBackend::read_result_t&>&>::complete(std::pair<RecoveryMessages*, ECBackend::read_result_t&>&)+0x9) [0x559be0ce3b89]
 4: (ECBackend::complete_read_op(ECBackend::ReadOp&, RecoveryMessages*)+0x63) [0x559be0cda003]
 5: (ECBackend::handle_sub_read_reply(pg_shard_t, ECSubReadReply&, RecoveryMessages*)+0xf68) [0x559be0cdafd8]
 6: (ECBackend::handle_message(std::shared_ptr<OpRequest>)+0x186) [0x559be0ce2236]
 7: (ReplicatedPG::do_request(std::shared_ptr<OpRequest>&, ThreadPool::TPHandle&)+0xed) [0x559be0c1c30d]
 8: (OSD::dequeue_op(boost::intrusive_ptr<PG>, std::shared_ptr<OpRequest>, ThreadPool::TPHandle&)+0x3f5) [0x559be0adb285]
 9: (PGQueueable::RunVis::operator()(std::shared_ptr<OpRequest>&)+0x5d) [0x559be0adb4ad]
 10: (OSD::ShardedOpWQ::_process(unsigned int, ceph::heartbeat_handle_d*)+0x869) [0x559be0adfec9]
 11: (ShardedThreadPool::shardedthreadpool_worker(unsigned int)+0x885) [0x559be1126195]
 12: (ShardedThreadPool::WorkThreadSharded::entry()+0x10) [0x559be11280d0]
 13: (()+0x8184) [0x7f89e8b7b184]
 14: (clone()+0x6d) [0x7f89e6ca937d]
 NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.

--- logging levels ---
   0/ 5 none
   0/ 1 lockdep
   0/ 1 context
   1/ 1 crush
   1/ 5 mds
   1/ 5 mds_balancer
   1/ 5 mds_locker
   1/ 5 mds_log
   1/ 5 mds_log_expire
   1/ 5 mds_migrator
   0/ 1 buffer
   0/ 1 timer
   0/ 1 filer
   0/ 1 striper
   0/ 1 objecter
   0/ 5 rados
   0/ 5 rbd
   0/ 5 rbd_mirror
   0/ 5 rbd_replay
   0/ 5 journaler
   0/ 5 objectcacher
   0/ 5 client
   0/ 5 osd
   0/ 5 optracker
   0/ 5 objclass
   1/ 3 filestore
   1/ 3 journal
   0/ 5 ms
   1/ 5 mon
   0/10 monc
   0/ 5 ms
   1/ 5 mon
   0/10 monc
   1/ 5 paxos
   0/ 5 tp
   1/ 5 auth
   1/ 5 crypto
   1/ 1 finisher
   1/ 5 heartbeatmap
   1/ 5 perfcounter
   1/ 5 rgw
   1/10 civetweb
   1/ 5 javaclient
   1/ 5 asok
   1/ 1 throttle
   0/ 0 refs
   1/ 5 xio
   1/ 5 compressor
   1/ 5 newstore
   1/ 5 bluestore
   1/ 5 bluefs
   1/ 3 bdev
   1/ 5 kstore
   4/ 5 rocksdb
   4/ 5 leveldb
   1/ 5 kinetic
   1/ 5 fuse
  -2/-2 (syslog threshold)
  -1/-1 (stderr threshold)
  max_recent     10000
  max_new         1000
  log_file /var/log/ceph/ceph-osd.34.log
--- end dump of recent events ---
2016-08-10 12:38:21.314493 7f89d3c25700  1 leveldb: Generated table #22502: 17869 keys, 2126035 bytes
2016-08-10 12:38:21.357565 7f89bef50700 -1 *** Caught signal (Aborted) **
 in thread 7f89bef50700 thread_name:tp_osd_tp

 ceph version 10.2.1 (3a66dd4f30852819c1bdaa8ec23c795d4ad77269)
 1: (()+0x8eac12) [0x559be103ec12]
 2: (()+0x10330) [0x7f89e8b83330]
 3: (gsignal()+0x37) [0x7f89e6be5c37]
 4: (abort()+0x148) [0x7f89e6be9028]
 5: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x265) [0x559be1136005]
 6: (OnRecoveryReadComplete::finish(std::pair<RecoveryMessages*, ECBackend::read_result_t&>&)+0x192) [0x559be0cf6122]
 7: (GenContext<std::pair<RecoveryMessages*, ECBackend::read_result_t&>&>::complete(std::pair<RecoveryMessages*, ECBackend::read_result_t&>&)+0x9) [0x559be0ce3b89]
 8: (ECBackend::complete_read_op(ECBackend::ReadOp&, RecoveryMessages*)+0x63) [0x559be0cda003]
 9: (ECBackend::handle_sub_read_reply(pg_shard_t, ECSubReadReply&, RecoveryMessages*)+0xf68) [0x559be0cdafd8]
 10: (ECBackend::handle_message(std::shared_ptr<OpRequest>)+0x186) [0x559be0ce2236]
 11: (ReplicatedPG::do_request(std::shared_ptr<OpRequest>&, ThreadPool::TPHandle&)+0xed) [0x559be0c1c30d]
 12: (OSD::dequeue_op(boost::intrusive_ptr<PG>, std::shared_ptr<OpRequest>, ThreadPool::TPHandle&)+0x3f5) [0x559be0adb285]
 13: (PGQueueable::RunVis::operator()(std::shared_ptr<OpRequest>&)+0x5d) [0x559be0adb4ad]
 14: (OSD::ShardedOpWQ::_process(unsigned int, ceph::heartbeat_handle_d*)+0x869) [0x559be0adfec9]
 15: (ShardedThreadPool::shardedthreadpool_worker(unsigned int)+0x885) [0x559be1126195]
 16: (ShardedThreadPool::WorkThreadSharded::entry()+0x10) [0x559be11280d0]
 17: (()+0x8184) [0x7f89e8b7b184]
 18: (clone()+0x6d) [0x7f89e6ca937d]
 NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.


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