Re: CephFS no longer mounts and asserts in MDS after upgrade to 0.67.3

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This is scary. Should I hold on upgrade?

On 9/10/13 11:33 AM, "Oliver Daudey" <oliver@xxxxxxxxx> wrote:

>Hey Gregory,
>
>On 10-09-13 20:21, Gregory Farnum wrote:
>> On Tue, Sep 10, 2013 at 10:54 AM, Oliver Daudey <oliver@xxxxxxxxx>
>>wrote:
>>> Hey list,
>>>
>>> I just upgraded to Ceph 0.67.3.  What I did on every node of my 3-node
>>> cluster was:
>>> - Unmount CephFS everywhere.
>>> - Upgrade the Ceph-packages.
>>> - Restart MON.
>>> - Restart OSD.
>>> - Restart MDS.
>>>
>>> As soon as I got to the second node, the MDS crashed right after
>>>startup.
>>>
>>> Part of the logs (more on request):
>>>
>>> -> 194.109.43.12:6802/53419 -- osd_op(mds.0.58:4 mds_snaptable [read
>>> 0~0] 1.d902
>>> 70ad e37647) v4 -- ?+0 0x1e48d80 con 0x1e5d9a0
>>>    -11> 2013-09-10 19:35:02.798962 7fd1ba81f700  2 mds.0.58 boot_start
>>> 1: openin
>>> g mds log
>>>    -10> 2013-09-10 19:35:02.798968 7fd1ba81f700  5 mds.0.log open
>>> discovering lo
>>> g bounds
>>>     -9> 2013-09-10 19:35:02.798988 7fd1ba81f700  1 mds.0.journaler(ro)
>>> recover s
>>> tart
>>>     -8> 2013-09-10 19:35:02.798990 7fd1ba81f700  1 mds.0.journaler(ro)
>>> read_head
>>>     -7> 2013-09-10 19:35:02.799028 7fd1ba81f700  1 --
>>> 194.109.43.12:6800/67277 -
>>> -> 194.109.43.11:6800/16562 -- osd_op(mds.0.58:5 200.00000000 [read
>>>0~0]
>>> 1.844f3
>>> 494 e37647) v4 -- ?+0 0x1e48b40 con 0x1e5db00
>>>     -6> 2013-09-10 19:35:02.799053 7fd1ba81f700  1 --
>>> 194.109.43.12:6800/67277 <
>>> == mon.2 194.109.43.13:6789/0 16 ==== mon_subscribe_ack(300s) v1 ====
>>> 20+0+0 (42
>>> 35168662 0 0) 0x1e93380 con 0x1e5d580
>>>     -5> 2013-09-10 19:35:02.799099 7fd1ba81f700 10 monclient:
>>> handle_subscribe_a
>>> ck sent 2013-09-10 19:35:02.796448 renew after 2013-09-10
>>>19:37:32.796448
>>>     -4> 2013-09-10 19:35:02.800907 7fd1ba81f700  5 mds.0.58
>>> ms_handle_connect on
>>>  194.109.43.12:6802/53419
>>>     -3> 2013-09-10 19:35:02.800927 7fd1ba81f700  5 mds.0.58
>>> ms_handle_connect on
>>>  194.109.43.13:6802/45791
>>>     -2> 2013-09-10 19:35:02.801176 7fd1ba81f700  5 mds.0.58
>>> ms_handle_connect on
>>>  194.109.43.11:6800/16562
>>>     -1> 2013-09-10 19:35:02.803546 7fd1ba81f700  1 --
>>> 194.109.43.12:6800/67277 <
>>> == osd.2 194.109.43.13:6802/45791 1 ==== osd_op_reply(3 mds_anchortable
>>> [read 0~
>>> 0] ack = -2 (No such file or directory)) v4 ==== 114+0+0 (3107677671 0
>>> 0) 0x1e4d
>>> e00 con 0x1e5ddc0
>>>      0> 2013-09-10 19:35:02.805611 7fd1ba81f700 -1 mds/MDSTable.cc: In
>>> function
>>> 'void MDSTable::load_2(int, ceph::bufferlist&, Context*)' thread
>>> 7fd1ba81f700 ti
>>> me 2013-09-10 19:35:02.803673
>>> mds/MDSTable.cc: 152: FAILED assert(r >= 0)
>>>
>>>  ceph version 0.67.3 (408cd61584c72c0d97b774b3d8f95c6b1b06341a)
>>>  1: (MDSTable::load_2(int, ceph::buffer::list&, Context*)+0x44f)
>>>[0x77ce7f]
>>>  2: (Objecter::handle_osd_op_reply(MOSDOpReply*)+0xe3b) [0x7d891b]
>>>  3: (MDS::handle_core_message(Message*)+0x987) [0x56f527]
>>>  4: (MDS::_dispatch(Message*)+0x2f) [0x56f5ef]
>>>  5: (MDS::ms_dispatch(Message*)+0x19b) [0x5710bb]
>>>  6: (DispatchQueue::entry()+0x592) [0x92e432]
>>>  7: (DispatchQueue::DispatchThread::entry()+0xd) [0x8a59bd]
>>>  8: (()+0x68ca) [0x7fd1bed298ca]
>>>  9: (clone()+0x6d) [0x7fd1bda5cb6d]
>>>  NOTE: a copy of the executable, or `objdump -rdS <executable>` is
>>> needed to interpret this.
>>>
>>> When trying to mount CephFS, it just hangs now.  Sometimes, an MDS
>>>stays
>>> up for a while, but will eventually crash again.  This CephFS was
>>> created on 0.67 and I haven't done anything but mount and use it under
>>> very light load in the mean time.
>>>
>>> Any ideas, or if you need more info, let me know.  It would be nice to
>>> get my data back, but I have backups too.
>> 
>> Does the filesystem have any data in it? Every time we've seen this
>> error it's been on an empty cluster which had some weird issue with
>> startup.
>
>This one certainly had some data on it, yes.  A couple of 100's of GBs
>of disk-images and a couple of trees of smaller files.  Most of them
>accessed very rarely since being copied on.
>
>
>   Regards,
>
>      Oliver
>_______________________________________________
>ceph-users mailing list
>ceph-users@xxxxxxxxxxxxxx
>http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

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