Dear all,

We are still struggling this this issue. By now, one OSD crashes all the
time (a different then yesterday), but now on a different assert.


Namely with this one:

#0  0x00007ffff5464428 in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:54
#1  0x00007ffff546602a in __GI_abort () at abort.c:89
#2  0x0000555555ff157e in ceph::__ceph_assert_fail
(assertion=assertion@entry=0x555556564e97 "head_obc",
file=file@entry=0x555556566bd8
"/build/ceph-12.2.1/src/osd/PrimaryLogPG.cc", line=line@entry=10369,
    func=func@entry=0x55555656d940
<PrimaryLogPG::recover_missing(hobject_t const&, eversion_t, int,
PGBackend::RecoveryHandle*)::__PRETTY_FUNCTION__> "int
PrimaryLogPG::recover_missing(const hobject_t&, eversion_t, int,
PGBackend::RecoveryHandle*)") at /build/ceph-12.2.1/src/common/assert.cc:66
#3  0x0000555555b833e9 in PrimaryLogPG::recover_missing
(this=this@entry=0x555562aca000, soid=..., v=..., priority=<optimized
out>, h=h@entry=0x555567a3a080) at
/build/ceph-12.2.1/src/osd/PrimaryLogPG.cc:10369
#4  0x0000555555bc3fd0 in PrimaryLogPG::recover_primary
(this=this@entry=0x555562aca000, max=max@entry=1, handle=...) at
/build/ceph-12.2.1/src/osd/PrimaryLogPG.cc:11588
#5  0x0000555555bcc81e in PrimaryLogPG::start_recovery_ops
(this=0x555562aca000, max=1, handle=..., ops_started=0x7fffd8b1ac68) at
/build/ceph-12.2.1/src/osd/PrimaryLogPG.cc:11339
#6  0x0000555555a20a59 in OSD::do_recovery (this=0x55555f95a000,
pg=0x555562aca000, queued=384619, reserved_pushes=1, handle=...) at
/build/ceph-12.2.1/src/osd/OSD.cc:9381
#7  0x0000555555c94be9 in PGQueueable::RunVis::operator()
(this=this@entry=0x7fffd8b1af00, op=...) at
/build/ceph-12.2.1/src/osd/PGQueueable.cc:34
#8  0x0000555555a226c4 in
boost::detail::variant::invoke_visitor<PGQueueable::RunVis>::internal_visit<PGRecovery>
(operand=..., this=<synthetic pointer>)
    at
/build/ceph-12.2.1/obj-x86_64-linux-gnu/boost/include/boost/variant/variant.hpp:1046
#9 
boost::detail::variant::visitation_impl_invoke_impl<boost::detail::variant::invoke_visitor<PGQueueable::RunVis>,
void*, PGRecovery> (storage=0x7fffd8b1af50, visitor=<synthetic pointer>)
    at
/build/ceph-12.2.1/obj-x86_64-linux-gnu/boost/include/boost/variant/detail/visitation_impl.hpp:114
#10
boost::detail::variant::visitation_impl_invoke<boost::detail::variant::invoke_visitor<PGQueueable::RunVis>,
void*, PGRecovery, boost::variant<boost::intrusive_ptr<OpRequest>,
PGSnapTrim, PGScrub, PGRecovery>::has_fallback_type_> (
    t=0x0, storage=0x7fffd8b1af50, visitor=<synthetic pointer>,
internal_which=<optimized out>) at
/build/ceph-12.2.1/obj-x86_64-linux-gnu/boost/include/boost/variant/detail/visitation_impl.hpp:157
#11 boost::detail::variant::visitation_impl<mpl_::int_<0>,
boost::detail::variant::visitation_impl_step<boost::mpl::l_iter<boost::mpl::l_item<mpl_::long_<4l>,
boost::intrusive_ptr<OpRequest>, boost::mpl::l_item<mpl_::long_<3l>,
PGSnapTrim, boost::mpl::l_item<mpl_::long_<2l>, PGScrub,
boost::mpl::l_item<mpl_::long_<1l>, PGRecovery, boost::mpl::l_end> > > >
>, boost::mpl::l_iter<boost::mpl::l_end> >,
boost::detail::variant::invoke_visitor<PGQueueable::RunVis>, void*,
boost::variant<boost::intrusive_ptr<OpRequest>, PGSnapTrim, PGScrub,
PGRecovery>::has_fallback_type_> (no_backup_flag=...,
storage=0x7fffd8b1af50, visitor=<synthetic pointer>,
logical_which=<optimized out>, internal_which=<optimized out>)
    at
/build/ceph-12.2.1/obj-x86_64-linux-gnu/boost/include/boost/variant/detail/visitation_impl.hpp:238
#12 boost::variant<boost::intrusive_ptr<OpRequest>, PGSnapTrim, PGScrub,
PGRecovery>::internal_apply_visitor_impl<boost::detail::variant::invoke_visitor<PGQueueable::RunVis>,
void*> (storage=0x7fffd8b1af50, visitor=<synthetic pointer>,
    logical_which=<optimized out>, internal_which=<optimized out>) at
/build/ceph-12.2.1/obj-x86_64-linux-gnu/boost/include/boost/variant/variant.hpp:2389
#13 boost::variant<boost::intrusive_ptr<OpRequest>, PGSnapTrim, PGScrub,
PGRecovery>::internal_apply_visitor<boost::detail::variant::invoke_visitor<PGQueueable::RunVis>
> (visitor=<synthetic pointer>, this=0x7fffd8b1af48)
    at
/build/ceph-12.2.1/obj-x86_64-linux-gnu/boost/include/boost/variant/variant.hpp:2400
#14 boost::variant<boost::intrusive_ptr<OpRequest>, PGSnapTrim, PGScrub,
PGRecovery>::apply_visitor<PGQueueable::RunVis> (visitor=...,
this=0x7fffd8b1af48)
    at
/build/ceph-12.2.1/obj-x86_64-linux-gnu/boost/include/boost/variant/variant.hpp:2423
#15 boost::apply_visitor<PGQueueable::RunVis,
boost::variant<boost::intrusive_ptr<OpRequest>, PGSnapTrim, PGScrub,
PGRecovery> > (visitable=..., visitor=...)
    at
/build/ceph-12.2.1/obj-x86_64-linux-gnu/boost/include/boost/variant/detail/apply_visitor_unary.hpp:70
#16 PGQueueable::run (handle=..., pg=..., osd=<optimized out>,
this=0x7fffd8b1af48) at /build/ceph-12.2.1/src/osd/PGQueueable.h:140
#17 OSD::ShardedOpWQ::_process (this=0x55555f95b5d8,
thread_index=<optimized out>, hb=0x555567a1e1e0) at
/build/ceph-12.2.1/src/osd/OSD.cc:10327
#18 0x0000555555ff61e4 in ShardedThreadPool::shardedthreadpool_worker
(this=0x55555f95ab88, thread_index=4) at
/build/ceph-12.2.1/src/common/WorkQueue.cc:339
#19 0x0000555555ff9220 in ShardedThreadPool::WorkThreadSharded::entry
(this=<optimized out>) at /build/ceph-12.2.1/src/common/WorkQueue.h:689
#20 0x00007ffff64bf6ba in start_thread (arg=0x7fffd8b1d700) at
pthread_create.c:333
#21 0x00007ffff55363dd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109


We are not gdb experts, however,

When we request the arguments of the 3th frame, it tells us,

#3  0x0000555555b833e9 in PrimaryLogPG::recover_missing
(this=this@entry=0x555562aca000, soid=..., v=..., priority=<optimized
out>, h=h@entry=0x555567a3a080) at
/build/ceph-12.2.1/src/osd/PrimaryLogPG.cc:10369
10369    /build/ceph-12.2.1/src/osd/PrimaryLogPG.cc: No such file or
directory.
(gdb) info args
this = 0x555562aca000
soid = @0x7fffd8b1a6c0: {oid = {name = "rbd_data.30732d3238f3535.", '0'
<repeats 12 times>, "f7e3"}, snap = {val = 244802}, hash = 3610026748,
max = false, nibblewise_key_cache = 3475686013, hash_reverse_bits =
1061500139,
  static POOL_META = -1, static POOL_TEMP_START = -2, pool = 2, nspace =
"", key = ""}
v = <optimized out>
priority = <optimized out>
h = 0x555567a3a080
(gdb) Quit


So it points to: rbd_data.30732d3238f3535.(0x12)f7e3


This is weird, as we cannot found any reference to
"rbd_data.30732d3238f3535.000000000000f7e3", this rbd prefix does not
exist on our system (when running rbd ls and requesting info of the
rbds,30732d3238f3535 is not found ), nor we can find any object on the
filesystem which looks to belong to this rbd image. It can of course be
an old rbd image which is deleted by now, but we do not understand why
it is still trying to access it or repair it. It seems this repair is in
some queue or something.

This is happening in the same PG as the problem we found yesterday.


All advise is welcome, as we still have one pg down..


best,


mart







On 10/18/2017 12:39 PM, Ana Aviles wrote:
>
> Hello,
>
> We created a BUG #21827 . Also updated the log file of the OSD with
> debug 20. Reference is 6e4dba6f-2c15-4920-b591-fe380bbca200
>
> Thanks,
> Ana
>
> On 18/10/17 00:46, Mart van Santen wrote:
>>
>>
>> Hi Greg,
>>
>> (I'm a colleague of Ana), Thank you for your reply
>>
>>
>> On 10/17/2017 11:57 PM, Gregory Farnum wrote:
>>>
>>>
>>> On Tue, Oct 17, 2017 at 9:51 AM Ana Aviles <a...@greenhost.nl
>>> <mailto:a...@greenhost.nl>> wrote:
>>>
>>>     Hello all,
>>>
>>>     We had an inconsistent PG on our cluster. While performing PG repair
>>>     operation the OSD crashed. The OSD was not able to start again
>>>     anymore,
>>>     and there was no hardware failure on the disk itself. This is
>>>     the log output
>>>
>>>     2017-10-17 17:48:55.771384 7f234930d700 -1 log_channel(cluster) log
>>>     [ERR] : 2.2fc repair 1 missing, 0 inconsistent objects
>>>     2017-10-17 17:48:55.771417 7f234930d700 -1 log_channel(cluster) log
>>>     [ERR] : 2.2fc repair 3 errors, 1 fixed
>>>     2017-10-17 17:48:56.047896 7f234930d700 -1
>>>     /build/ceph-12.2.1/src/osd/PrimaryLogPG.cc: In function 'virtual
>>>     void
>>>     PrimaryLogPG::on_local_recover(const hobject_t&, const
>>>     ObjectRecoveryInfo&, ObjectContextRef, bool,
>>>     ObjectStore::Transaction*)'
>>>     thread 7f234930d700 time 2017-10-17 17:48:55.924115
>>>     /build/ceph-12.2.1/src/osd/PrimaryLogPG.cc: 358: FAILED assert(p !=
>>>     recovery_info.ss.clone_snaps.end())
>>>
>>>
>>> Hmm. The OSD got a push op containing a snapshot it doesn't think
>>> should exist. I also see that there's a comment "// hmm, should we
>>> warn?" on that assert.
>>
>>
>> We catched also those log entries, which indeed point to a
>> clone/snapshot problem:
>>
>>  -9877> 2017-10-17 17:46:16.044077 7f234db16700 10 log_client  will
>> send 2017-10-17 17:46:13.367842 osd.78 osd.78
>> [XXXX:XXXX:XXXX:XXXX::203]:6880/9116 483 : cluster [ERR] 2.2fc shard
>> 78 missing 2:3f72b543:::rbd_data.332d5a836bcc485.000000000000fcf6:466a7
>>  -9876> 2017-10-17 17:46:16.044105 7f234db16700 10 log_client  will
>> send 2017-10-17 17:46:13.368026 osd.78 osd.78
>> [XXXX:XXXX:XXXX:XXXX::203]:6880/9116 484 : cluster [ERR] repair 2.2fc
>> 2:3f72b543:::rbd_data.332d5a836bcc485.000000000000fcf6:466a7 is an
>> unexpected clone
>>  -9868> 2017-10-17 17:46:16.324112 7f2354b24700 10 log_client  logged
>> 2017-10-17 17:46:13.367842 osd.78 osd.78
>> [XXXX:XXXX:XXXX:XXXX::203]:6880/9116 483 : cluster [ERR] 2.2fc shard
>> 78 missing 2:3f72b543:::rbd_data.332d5a836bcc485.000000000000fcf6:466a7
>>  -9867> 2017-10-17 17:46:16.324128 7f2354b24700 10 log_client  logged
>> 2017-10-17 17:46:13.368026 osd.78 osd.78
>> [XXXX:XXXX:XXXX:XXXX::203]:6880/9116 484 : cluster [ERR] repair 2.2fc
>> 2:3f72b543:::rbd_data.332d5a836bcc485.000000000000fcf6:466a7 is an
>> unexpected clone
>>    -36> 2017-10-17 17:48:55.771384 7f234930d700 -1
>> log_channel(cluster) log [ERR] : 2.2fc repair 1 missing, 0
>> inconsistent objects
>>    -35> 2017-10-17 17:48:55.771417 7f234930d700 -1
>> log_channel(cluster) log [ERR] : 2.2fc repair 3 errors, 1 fixed
>>     -4> 2017-10-17 17:48:56.046071 7f234db16700 10 log_client  will
>> send 2017-10-17 17:48:55.771390 osd.78 osd.78
>> [XXXX:XXXX:XXXX:XXXX::203]:6880/9116 485 : cluster [ERR] 2.2fc repair
>> 1 missing, 0 inconsistent objects
>>     -3> 2017-10-17 17:48:56.046088 7f234db16700 10 log_client  will
>> send 2017-10-17 17:48:55.771419 osd.78 osd.78
>> [XXXX:XXXX:XXXX:XXXX::203]:6880/9116 486 : cluster [ERR] 2.2fc repair
>> 3 errors, 1 fixed
>>
>>>
>>> Can you take a full log with "debug osd = 20" set, post it with
>>> ceph-post-file, and create a ticket on tracker.ceph.com
>>> <http://tracker.ceph.com>?
>>
>> We will submit the ticket tomorrow (we are in CEST), We want to have
>> more pair of eyes on it when we start the OSD again.
>>
>> After this crash the OSD was marked as out by us. The cluster
>> rebalanced itself, unfortunately, the same issue appear on another
>> OSD (same pg), after several crashes of this OSD, the OSD came back
>> up, but now with one PG down. I assume the cluster decided it
>> 'finished' the ceph pg repair command and removed the 'repair' state,
>> but now with a broken pg. If you have any hints on how we can get the
>> PG online again, we would be very grateful, so we can work on that
>> tomorrow.
>>
>>
>> Thanks,
>>
>> Mart
>>
>>
>>
>>
>> Some general info about this cluster:
>>
>> - all OSD runs the same version, also monitors are all 12.2.1 (ubuntu
>> xenial)
>>
>> - the cluster is a backup cluster and has min/size 1 and replication
>> 2, so only 2 copies.
>>
>> - the cluster was recently upgraded from jewel to luminous (3 weeks ago)
>>
>> - the cluster was recently upgraded from straw to straw2 (1 week ago)
>>
>> - it was in HEALTH_OK till this happend.
>>
>> - we use filestore only
>>
>> - the cluster was installed with hammer originally. upgraded to
>> infernalis, jewel and now luminous
>>
>>
>>
>> health:
>> (noup/noout set on purpose while we trying to recover)
>>
>>
>> $ ceph -s
>>   cluster:
>>     id:     xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxx
>>     health: HEALTH_WARN
>>             noup,noout flag(s) set
>>             Reduced data availability: 1 pg inactive, 1 pg down
>>             Degraded data redundancy: 2892/31621143 objects degraded
>> (0.009%), 2 pgs unclean, 1 pg degraded, 1 pg undersized
>>  
>>   services:
>>     mon: 3 daemons, quorum ds2-mon1,ds2-mon2,ds2-mon3
>>     mgr: ds2-mon1(active)
>>     osd: 93 osds: 92 up, 92 in; 1 remapped pgs
>>          flags noup,noout
>>     rgw: 1 daemon active
>>  
>>   data:
>>     pools:   13 pools, 1488 pgs
>>     objects: 15255k objects, 43485 GB
>>     usage:   119 TB used, 126 TB / 245 TB avail
>>     pgs:     0.067% pgs not active
>>              2892/31621143 objects degraded (0.009%)
>>              1483 active+clean
>>              2    active+clean+scrubbing+deep
>>              1    active+undersized+degraded+remapped+backfilling
>>              1    active+clean+scrubbing
>>              1    down
>>  
>>   io:
>>     client:   340 B/s rd, 14995 B/s wr, 1 op/s rd, 2 op/s wr
>>     recovery: 9567 kB/s, 2 objects/s
>>  
>>
>>
>> $ ceph health detail
>> HEALTH_WARN noup,noout flag(s) set; Reduced data availability: 1 pg
>> inactive, 1 pg down; Degraded data redundancy: 2774/31621143 objects
>> degraded (0.009%), 2 pgs unclean, 1 pg degraded, 1 pg undersized
>> OSDMAP_FLAGS noup,noout flag(s) set
>> PG_AVAILABILITY Reduced data availability: 1 pg inactive, 1 pg down
>>     pg 2.2fc is down, acting [69,93]
>> PG_DEGRADED Degraded data redundancy: 2774/31621143 objects degraded
>> (0.009%), 2 pgs unclean, 1 pg degraded, 1 pg undersized
>>     pg 2.1e9 is stuck undersized for 23741.295159, current state
>> active+undersized+degraded+remapped+backfilling, last acting [41]
>>     pg 2.2fc is stuck unclean since forever, current state down, last
>> acting [69,93]
>>
>>
>>
>>>
>>> Are all your OSDs running that same version?
>>> -Greg
>>>  
>>>
>>>
>>>      ceph version 12.2.1 (3e7492b9ada8bdc9a5cd0feafd42fbca27f9c38e)
>>>     luminous
>>>     (stable)
>>>      1: (ceph::__ceph_assert_fail(char const*, char const*, int, char
>>>     const*)+0x102) [0x56236c8ff3f2]
>>>      2: (PrimaryLogPG::on_local_recover(hobject_t const&,
>>>     ObjectRecoveryInfo
>>>     const&, std::shared_ptr<ObjectContext>, bool,
>>>     ObjectStore::Transaction*)+0xd63) [0x56236c476213]
>>>      3: (ReplicatedBackend::handle_pull_response(pg_shard_t, PushOp
>>>     const&,
>>>     PullOp*, std::__cxx11::list<ReplicatedBackend::pull_complete_info,
>>>     std::allocator<ReplicatedBackend::pull_complete_info> >*,
>>>     ObjectStore::Transaction*)+0x693) [0x56236c60d4d3]
>>>      4:
>>>     
>>> (ReplicatedBackend::_do_pull_response(boost::intrusive_ptr<OpRequest>)+0x2b5)
>>>     [0x56236c60dd75]
>>>      5:
>>>     
>>> (ReplicatedBackend::_handle_message(boost::intrusive_ptr<OpRequest>)+0x20c)
>>>     [0x56236c61196c]
>>>      6:
>>>     (PGBackend::handle_message(boost::intrusive_ptr<OpRequest>)+0x50)
>>>     [0x56236c521aa0]
>>>      7: (PrimaryLogPG::do_request(boost::intrusive_ptr<OpRequest>&,
>>>     ThreadPool::TPHandle&)+0x55d) [0x56236c48662d]
>>>      8: (OSD::dequeue_op(boost::intrusive_ptr<PG>,
>>>     boost::intrusive_ptr<OpRequest>, ThreadPool::TPHandle&)+0x3a9)
>>>     [0x56236c3091a9]
>>>      9: (PGQueueable::RunVis::operator()(boost::intrusive_ptr<OpRequest>
>>>     const&)+0x57) [0x56236c5a2ae7]
>>>      10: (OSD::ShardedOpWQ::_process(unsigned int,
>>>     ceph::heartbeat_handle_d*)+0x130e) [0x56236c3307de]
>>>      11: (ShardedThreadPool::shardedthreadpool_worker(unsigned
>>>     int)+0x884)
>>>     [0x56236c9041e4]
>>>      12: (ShardedThreadPool::WorkThreadSharded::entry()+0x10)
>>>     [0x56236c907220]
>>>      13: (()+0x76ba) [0x7f2366be96ba]
>>>      14: (clone()+0x6d) [0x7f2365c603dd]
>>>      NOTE: a copy of the executable, or `objdump -rdS <executable>` is
>>>     needed to interpret this.
>>>
>>>     Thanks!
>>>
>>>     Ana
>>>
>>>
>>>     _______________________________________________
>>>     ceph-users mailing list
>>>     ceph-users@lists.ceph.com <mailto:ceph-users@lists.ceph.com>
>>>     http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>>>
>>>
>>>
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>>
>>
>>
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>
>
>
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-- 
Mart van Santen
Greenhost
E: m...@greenhost.nl
T: +31 20 4890444
W: https://greenhost.nl

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