Hi Brett,
in Nautilus you can do that via
ceph config set osd.N bluestore_allocator stupid
ceph config set osd.N bluefs_allocator stupid
See https://ceph.com/community/new-mimic-centralized-configuration-management/ for more details on a new way of configuration options setting.
A known issue with Stupid allocator is gradual write request latency increase (occurred within several days after OSD restart). Seldom observed though. There were some posts about that behavior in the mail list this year.
Thanks,
Igor.
On 7/8/2019 8:33 PM, Brett Chancellor wrote:
I'll give that a try. Is it something like...ceph tell 'osd.*' bluestore_allocator stupidceph tell 'osd.*' bluefs_allocator stupid
And should I expect any issues doing this?
On Mon, Jul 8, 2019 at 1:04 PM Igor Fedotov <ifedotov@xxxxxxx> wrote:
I should read call stack more carefully... It's not about lacking free space - this is rather the bug from this ticket:
http://tracker.ceph.com/issues/40080
You should upgrade to v14.2.2 (once it's available) or temporarily switch to stupid allocator as a workaround.
Thanks,
Igor
On 7/8/2019 8:00 PM, Igor Fedotov wrote:
Hi Brett,
looks like BlueStore is unable to allocate additional space for BlueFS at main device. It's either lacking free space or it's too fragmented...
Would you share osd log, please?
Also please run "ceph-bluestore-tool --path <substitute with path-to-osd!!!> bluefs-bdev-sizes" and share the output.
Thanks,
Igor
On 7/3/2019 9:59 PM, Brett Chancellor wrote:
Hi All! Today I've had 3 OSDs stop themselves and are unable to restart, all with the same error. These OSDs are all on different hosts. All are running 14.2.1
I did try the following two commands- ceph-kvstore-tool bluestore-kv /var/lib/ceph/osd/ceph-80 list > keys## This failed with the same error below- ceph-bluestore-tool --path /var/lib/ceph/osd/ceph-80 fsck## After a couple of hours returned...2019-07-03 18:30:02.095 7fe7c1c1ef00 -1 bluestore(/var/lib/ceph/osd/ceph-80) fsck warning: legacy statfs record found, suggest to run store repair to get consistent statistic reports
fsck success
## Error when trying to start one of the OSDs-12> 2019-07-03 18:36:57.450 7f5e42366700 -1 *** Caught signal (Aborted) **
in thread 7f5e42366700 thread_name:rocksdb:low0
ceph version 14.2.1 (d555a9489eb35f84f2e1ef49b77e19da9d113972) nautilus (stable)
1: (()+0xf5d0) [0x7f5e50bd75d0]
2: (gsignal()+0x37) [0x7f5e4f9ce207]
3: (abort()+0x148) [0x7f5e4f9cf8f8]
4: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x199) [0x55a7aaee96ab]
5: (ceph::__ceph_assertf_fail(char const*, char const*, int, char const*, char const*, ...)+0) [0x55a7aaee982a]
6: (interval_set<unsigned long, std::map<unsigned long, unsigned long, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, unsigned long> > > >::insert(unsigned long, unsigned long, unsigned long*, unsigned long*)+0x3c6) [0x55a7ab212a66]
7: (BlueStore::allocate_bluefs_freespace(unsigned long, unsigned long, std::vector<bluestore_pextent_t, mempool::pool_allocator<(mempool::pool_index_t)4, bluestore_pextent_t> >*)+0x74e) [0x55a7ab48253e]
8: (BlueFS::_expand_slow_device(unsigned long, std::vector<bluestore_pextent_t, mempool::pool_allocator<(mempool::pool_index_t)4, bluestore_pextent_t> >&)+0x111) [0x55a7ab59e921]
9: (BlueFS::_allocate(unsigned char, unsigned long, bluefs_fnode_t*)+0x68b) [0x55a7ab59f68b]
10: (BlueFS::_flush_range(BlueFS::FileWriter*, unsigned long, unsigned long)+0xe5) [0x55a7ab59fce5]
11: (BlueFS::_flush(BlueFS::FileWriter*, bool)+0x10b) [0x55a7ab5a1b4b]
12: (BlueRocksWritableFile::Flush()+0x3d) [0x55a7ab5bf84d]
13: (rocksdb::WritableFileWriter::Flush()+0x19e) [0x55a7abbedd0e]
14: (rocksdb::WritableFileWriter::Sync(bool)+0x2e) [0x55a7abbedfee]
15: (rocksdb::CompactionJob::FinishCompactionOutputFile(rocksdb::Status const&, rocksdb::CompactionJob::SubcompactionState*, rocksdb::RangeDelAggregator*, CompactionIterationStats*, rocksdb::Slice const*)+0xbaa) [0x55a7abc3b73a]
16: (rocksdb::CompactionJob::ProcessKeyValueCompaction(rocksdb::CompactionJob::SubcompactionState*)+0x7d0) [0x55a7abc3f150]
17: (rocksdb::CompactionJob::Run()+0x298) [0x55a7abc40618]
18: (rocksdb::DBImpl::BackgroundCompaction(bool*, rocksdb::JobContext*, rocksdb::LogBuffer*, rocksdb::DBImpl::PrepickedCompaction*)+0xcb7) [0x55a7aba7fb67]
19: (rocksdb::DBImpl::BackgroundCallCompaction(rocksdb::DBImpl::PrepickedCompaction*, rocksdb::Env::Priority)+0xd0) [0x55a7aba813c0]
20: (rocksdb::DBImpl::BGWorkCompaction(void*)+0x3a) [0x55a7aba8190a]
21: (rocksdb::ThreadPoolImpl::Impl::BGThread(unsigned long)+0x264) [0x55a7abc8d9c4]
22: (rocksdb::ThreadPoolImpl::Impl::BGThreadWrapper(void*)+0x4f) [0x55a7abc8db4f]
23: (()+0x129dfff) [0x55a7abd1afff]
24: (()+0x7dd5) [0x7f5e50bcfdd5]
25: (clone()+0x6d) [0x7f5e4fa95ead]
NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.
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