Re: OSDs crashing with Operation Not Permitted on reading PGLog

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I mean, the 5 osds, different nodes?
-Sam

On Mon, Oct 27, 2014 at 2:50 PM, Wido den Hollander <wido@xxxxxxxx> wrote:
> On 10/27/2014 10:48 PM, Samuel Just wrote:
>> Different nodes?
>
> No, they are both from osd.25
>
> I re-ran the strace with a empty logfile since the old logfile became
> pretty big.
>
> Wido
>
>> -Sam
>>
>> On Mon, Oct 27, 2014 at 2:43 PM, Wido den Hollander <wido@xxxxxxxx> wrote:
>>> On 10/27/2014 10:35 PM, Samuel Just wrote:
>>>> The file is supposed to be 0 bytes, can you attach the log which went
>>>> with that strace?
>>>
>>> Yes, two URLs:
>>>
>>> * http://ceph.o.auroraobjects.eu/ceph-osd.25.log.gz
>>> * http://ceph.o.auroraobjects.eu/ceph-osd.25.strace.gz
>>>
>>> It was with debug_filestore on 20.
>>>
>>> Wido
>>>
>>>> -Sam
>>>>
>>>> On Mon, Oct 27, 2014 at 2:16 PM, Wido den Hollander <wido@xxxxxxxx> wrote:
>>>>> On 10/27/2014 10:05 PM, Samuel Just wrote:
>>>>>> Try reproducing with an strace.
>>>>>
>>>>> I did so and this is the result:
>>>>> http://ceph.o.auroraobjects.eu/ceph-osd.25.strace.gz
>>>>>
>>>>> It does this stat:
>>>>>
>>>>> stat("/var/lib/ceph/osd/ceph-25/current/meta/DIR_D/DIR_C"
>>>>>
>>>>> That fails with: -1 ENOENT (No such file or directory)
>>>>>
>>>>> Afterwards it open this pglog:
>>>>> /var/lib/ceph/osd/ceph-25/current/meta/DIR_D/pglog\\u14.1a56__0_A1630ECD__none
>>>>>
>>>>> That file is however 0 bytes. (And all other files in the same directory).
>>>>>
>>>>> Afterwards the OSD asserts and writes to the log.
>>>>>
>>>>> Wido
>>>>>
>>>>>> -Sam
>>>>>>
>>>>>> On Mon, Oct 27, 2014 at 2:02 PM, Wido den Hollander <wido@xxxxxxxx> wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> On a 0.80.7 cluster I'm experiencing a couple of OSDs refusing to start
>>>>>>> due to a crash they encounter when reading the PGLog.
>>>>>>>
>>>>>>> A snippet of the log:
>>>>>>>
>>>>>>>    -11> 2014-10-27 21:56:04.690046 7f034a006800 10
>>>>>>> filestore(/var/lib/ceph/osd/ceph-25) _do_transaction on 0x392e600
>>>>>>>    -10> 2014-10-27 21:56:04.690078 7f034a006800 20
>>>>>>> filestore(/var/lib/ceph/osd/ceph-25) _check_global_replay_guard no xattr
>>>>>>>     -9> 2014-10-27 21:56:04.690140 7f034a006800 20
>>>>>>> filestore(/var/lib/ceph/osd/ceph-25) _check_replay_guard no xattr
>>>>>>>     -8> 2014-10-27 21:56:04.690150 7f034a006800 15
>>>>>>> filestore(/var/lib/ceph/osd/ceph-25) touch meta/a1630ecd/pglog_14.1a56/0//-1
>>>>>>>     -7> 2014-10-27 21:56:04.690184 7f034a006800 10
>>>>>>> filestore(/var/lib/ceph/osd/ceph-25) touch
>>>>>>> meta/a1630ecd/pglog_14.1a56/0//-1 = 0
>>>>>>>     -6> 2014-10-27 21:56:04.690196 7f034a006800 15
>>>>>>> filestore(/var/lib/ceph/osd/ceph-25) _omap_rmkeys
>>>>>>> meta/a1630ecd/pglog_14.1a56/0//-1
>>>>>>>     -5> 2014-10-27 21:56:04.690290 7f034a006800 10 filestore oid:
>>>>>>> a1630ecd/pglog_14.1a56/0//-1 not skipping op, *spos 1435883.0.2
>>>>>>>     -4> 2014-10-27 21:56:04.690295 7f034a006800 10 filestore  >
>>>>>>> header.spos 0.0.0
>>>>>>>     -3> 2014-10-27 21:56:04.690314 7f034a006800  0
>>>>>>> filestore(/var/lib/ceph/osd/ceph-25)  error (1) Operation not permitted
>>>>>>> not handled on operation 33 (1435883.0.2, or op 2, counting from 0)
>>>>>>>     -2> 2014-10-27 21:56:04.690325 7f034a006800  0
>>>>>>> filestore(/var/lib/ceph/osd/ceph-25) unexpected error code
>>>>>>>     -1> 2014-10-27 21:56:04.690327 7f034a006800  0
>>>>>>> filestore(/var/lib/ceph/osd/ceph-25)  transaction dump:
>>>>>>> { "ops": [
>>>>>>>         { "op_num": 0,
>>>>>>>           "op_name": "nop"},
>>>>>>>         { "op_num": 1,
>>>>>>>           "op_name": "touch",
>>>>>>>           "collection": "meta",
>>>>>>>           "oid": "a1630ecd\/pglog_14.1a56\/0\/\/-1"},
>>>>>>>         { "op_num": 2,
>>>>>>>           "op_name": "omap_rmkeys",
>>>>>>>           "collection": "meta",
>>>>>>>           "oid": "a1630ecd\/pglog_14.1a56\/0\/\/-1"},
>>>>>>>         { "op_num": 3,
>>>>>>>           "op_name": "omap_setkeys",
>>>>>>>           "collection": "meta",
>>>>>>>           "oid": "a1630ecd\/pglog_14.1a56\/0\/\/-1",
>>>>>>>           "attr_lens": { "can_rollback_to": 12}}]}
>>>>>>>      0> 2014-10-27 21:56:04.691992 7f034a006800 -1 os/FileStore.cc: In
>>>>>>> function 'unsigned int
>>>>>>> FileStore::_do_transaction(ObjectStore::Transaction&, uint64_t, int,
>>>>>>> ThreadPool::TPHandle*)' thread 7f034a006800 time 2014-10-27 21:56:04.690368
>>>>>>> os/FileStore.cc: 2559: FAILED assert(0 == "unexpected error")
>>>>>>>
>>>>>>>
>>>>>>> The backing XFS filesystem seems to be OK, but isn't this a leveldb
>>>>>>> issue where the omap information is stored?
>>>>>>>
>>>>>>> Anyone seen this before? I have about 5 OSDs (out of the 336) which are
>>>>>>> showing this problem when booting.
>>>>>>>
>>>>>>> --
>>>>>>> Wido den Hollander
>>>>>>> 42on B.V.
>>>>>>> Ceph trainer and consultant
>>>>>>>
>>>>>>> Phone: +31 (0)20 700 9902
>>>>>>> Skype: contact42on
>>>>>>> --
>>>>>>> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
>>>>>>> the body of a message to majordomo@xxxxxxxxxxxxxxx
>>>>>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>>>>
>>>>>
>>>>> --
>>>>> Wido den Hollander
>>>>> 42on B.V.
>>>>> Ceph trainer and consultant
>>>>>
>>>>> Phone: +31 (0)20 700 9902
>>>>> Skype: contact42on
>>>
>>>
>>> --
>>> Wido den Hollander
>>> 42on B.V.
>>> Ceph trainer and consultant
>>>
>>> Phone: +31 (0)20 700 9902
>>> Skype: contact42on
>
>
> --
> Wido den Hollander
> 42on B.V.
> Ceph trainer and consultant
>
> Phone: +31 (0)20 700 9902
> Skype: contact42on
--
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