nm, Adam beat me to it.
> On Nov 3, 2023, at 11:40, Josh Baergen <jbaergen@xxxxxxxxxxxxxxxx> wrote:
>
> The ticket has been updated, but it's probably important enough to
> state on the list as well: The documentation is currently wrong in a
> way that running the command as documented will cause this corruption.
> The correct command to run is:
>
> ceph-bluestore-tool \
> --path <data path> \
> --sharding="m(3) p(3,0-12)
> O(3,0-13)=block_cache={type=binned_lru} L P" \
> reshard
>
> Josh
>
> On Fri, Nov 3, 2023 at 7:58 AM Denis Polom <denispolom@xxxxxxxxx> wrote:
>>
>> Hi,
>>
>> yes, exactly. I had to recreate OSD as well because daemon wasn't able
>> to start.
>>
>> It's obviously a bug and should be fixed either in documentation or code.
>>
>>
>> On 11/3/23 11:45, Eugen Block wrote:
>>> Hi,
>>>
>>> this seems like a dangerous operation to me, I tried the same on two
>>> different virtual clusters, Reef and Pacific (all upgraded from
>>> previous releases). In Reef the reshard fails alltogether and the OSD
>>> fails to start, I had to recreate it. In Pacific the reshard reports a
>>> successful operation, but the OSD fails to start as well, with the
>>> same stack trace as yours. I wasn't aware of this resharding operation
>>> yet, but is it really safe? I don't have an idea how to fix, I just
>>> recreated the OSDs.
>>>
>>>
>>> Zitat von Denis Polom <denispolom@xxxxxxxxx>:
>>>
>>>> Hi
>>>>
>>>> we upgraded our Ceph cluster from latest Octopus to Pacific 16.2.14
>>>> and then we followed the docs
>>>> (https://docs.ceph.com/en/latest/rados/configuration/bluestore-config-ref/#rocksdb-sharding
>>>> <https://docs.ceph.com/en/latest/rados/configuration/bluestore-config-ref/#rocksdb-sharding>)
>>>> to reshard RocksDB on our OSDs.
>>>>
>>>> Despite resharding reports operation as successful, OSD fails to start.
>>>>
>>>> # ceph-bluestore-tool --path /var/lib/ceph/osd/ceph-5/
>>>> --sharding="m(3) p(3,0-12) o(3,0-13)=block_cache={type=binned_lru} l
>>>> p" reshard
>>>> reshard success
>>>>
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]:
>>>> /build/ceph-16.2.14/src/kv/RocksDBStore.cc: 1223: FAILED
>>>> ceph_assert(recreate_mode)
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: ceph version 16.2.14
>>>> (238ba602515df21ea7ffc75c88db29f9e5ef12c9) pacific (stable)
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 1:
>>>> (ceph::__ceph_assert_fail(char const*, char const*, int, char
>>>> const*)+0x14b) [0x564047cb92b2]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 2:
>>>> /usr/bin/ceph-osd(+0xaa948a) [0x564047cb948a]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 3:
>>>> (RocksDBStore::do_open(std::ostream&, bool, bool,
>>>> std::__cxx11::basic_string<char, std::char_traits<char>,
>>>> std::allocator<char> > const&)+0x1609) [0x564048794829]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 4:
>>>> (BlueStore::_open_db(bool, bool, bool)+0x601) [0x564048240421]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 5:
>>>> (BlueStore::_open_db_and_around(bool, bool)+0x26b) [0x5640482a5f8b]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 6:
>>>> (BlueStore::_mount()+0x9c) [0x5640482a896c]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 7: (OSD::init()+0x38a)
>>>> [0x564047daacea]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 8: main()
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 9: __libc_start_main()
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 10: _start()
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 0>
>>>> 2023-10-30T12:44:17.088+0000 7f4971ed2100 -1 *** Caught signal
>>>> (Aborted) **
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: in thread 7f4971ed2100
>>>> thread_name:ceph-osd
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: ceph version 16.2.14
>>>> (238ba602515df21ea7ffc75c88db29f9e5ef12c9) pacific (stable)
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 1:
>>>> /lib/x86_64-linux-gnu/libpthread.so.0(+0x12730) [0x7f4972921730]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 2: gsignal()
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 3: abort()
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 4:
>>>> (ceph::__ceph_assert_fail(char const*, char const*, int, char
>>>> const*)+0x19c) [0x564047cb9303]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 5:
>>>> /usr/bin/ceph-osd(+0xaa948a) [0x564047cb948a]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 6:
>>>> (RocksDBStore::do_open(std::ostream&, bool, bool,
>>>> std::__cxx11::basic_string<char, std::char_traits<char>,
>>>> std::allocator<char> > const&)+0x1609) [0x564048794829]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 7:
>>>> (BlueStore::_open_db(bool, bool, bool)+0x601) [0x564048240421]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 8:
>>>> (BlueStore::_open_db_and_around(bool, bool)+0x26b) [0x5640482a5f8b]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 9:
>>>> (BlueStore::_mount()+0x9c) [0x5640482a896c]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 10: (OSD::init()+0x38a)
>>>> [0x564047daacea]
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 11: main()
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 12: __libc_start_main()
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: 13: _start()
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: NOTE: a copy of the
>>>> executable, or `objdump -rdS <executable>` is needed to interpret this.
>>>> Oct 30 12:44:17 octopus2 ceph-osd[4521]: -1>
>>>> 2023-10-30T12:44:17.084+0000 7f4971ed2100 -1
>>>> /build/ceph-16.2.14/src/kv/RocksDBStore.cc: In function 'int
>>>> RocksDBStore::do_open(std::ostream&, bool, bool, const string&)'
>>>> thread 7f4971ed2100 time 2023-10-30T12:44:17.087172+0000
>>>>
>>>> I've submitted bug report here https://tracker.ceph.com/issues/63353
>>>> but may be community here have some ideas how to fix it unless it's
>>>> really a bug.
>>>>
>>>> Thanks
>>>> _______________________________________________
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>>>
>>>
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