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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