"compaction_style=kCompactionStyleUniversal" in the bluestore_rocksdb_options .
Here is the option I am using..
bluestore_rocksdb_options = "max_write_buffer_number=16,min_write_buffer_number_to_merge=2,recycle_log_file_num=16,compaction_threads=32,flusher_threads=8,max_background_compactions=32,max_background_flushes=8,max_bytes_for_level_base=5368709120,write_buffer_size=83886080,level0_file_num_compaction_trigger=4,level0_slowdown_writes_trigger=400,level0_stop_writes_trigger=800,stats_dump_period_sec=10,compaction_style=kCompactionStyleUniversal"
Here is another one after 4 hours of 4K RW :-)...Sorry to bombard you with all these , I am adding more log for the next time if I hit it..
0> 2016-08-22 17:37:24.730817 7f8e7afff700 -1 os/bluestore/BlueFS.cc: In function 'int BlueFS::_read_random(BlueFS::FileReader*, uint64_t, size_t, char*)' thread 7f8e7afff700 time 2016-08-22 17:37:24.722706
os/bluestore/BlueFS.cc: 845: FAILED assert(r == 0)
ceph version 11.0.0-1688-g3fcc89c (3fcc89c7ab4c92e6c4564e29f4e1a663db36acc0)
1: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x80) [0x5581ed453cb0]
2: (BlueFS::_read_random(BlueFS::FileReader*, unsigned long, unsigned long, char*)+0x836) [0x5581ed11c1b6]
3: (BlueRocksRandomAccessFile::Read(unsigned long, unsigned long, rocksdb::Slice*, char*) const+0x20) [0x5581ed13f840]
4: (rocksdb::RandomAccessFileReader::Read(unsigned long, unsigned long, rocksdb::Slice*, char*) const+0x83f) [0x5581ed2c6f4f]
5: (rocksdb::ReadBlockContents(rocksdb::RandomAccessFileReader*, rocksdb::Footer const&, rocksdb::ReadOptions const&, rocksdb::BlockHandle const&, rocksdb::BlockContents*, rocksdb::Env*, bool, rocksdb::Slice const&, rocksdb::PersistentCacheOptions const&, rocksdb::Logger*)+0x358) [0x5581ed291c18]
6: (()+0x94fd54) [0x5581ed282d54]
7: (rocksdb::BlockBasedTable::NewDataBlockIterator(rocksdb::BlockBasedTable::Rep*, rocksdb::ReadOptions const&, rocksdb::Slice const&, rocksdb::BlockIter*)+0x60c) [0x5581ed284b3c]
8: (rocksdb::BlockBasedTable::Get(rocksdb::ReadOptions const&, rocksdb::Slice const&, rocksdb::GetContext*, bool)+0x508) [0x5581ed28ba68]
9: (rocksdb::TableCache::Get(rocksdb::ReadOptions const&, rocksdb::InternalKeyComparator const&, rocksdb::FileDescriptor const&, rocksdb::Slice const&, rocksdb::GetContext*, rocksdb::HistogramImpl*, bool, int)+0x158) [0x5581ed252118]
10: (rocksdb::Version::Get(rocksdb::ReadOptions const&, rocksdb::LookupKey const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, rocksdb::Status*, rocksdb::MergeContext*, bool*, bool*, unsigned long*)+0x4f8) [0x5581ed25c458]
11: (rocksdb::DBImpl::GetImpl(rocksdb::ReadOptions const&, rocksdb::ColumnFamilyHandle*, rocksdb::Slice const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, bool*)+0x5fa) [0x5581ed1f3f7a]
12: (rocksdb::DBImpl::Get(rocksdb::ReadOptions const&, rocksdb::ColumnFamilyHandle*, rocksdb::Slice const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*)+0x22) [0x5581ed1f4182]
13: (RocksDBStore::get(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, ceph::buffer::list*)+0x157) [0x5581ed1d21d7]
14: (BlueStore::Collection::get_onode(ghobject_t const&, bool)+0x55b) [0x5581ed02802b]
15: (BlueStore::_txc_add_transaction(BlueStore::TransContext*, ObjectStore::Transaction*)+0x1e49) [0x5581ed0318a9]
16: (BlueStore::queue_transactions(ObjectStore::Sequencer*, std::vector<ObjectStore::Transaction, std::allocator<ObjectStore::Transaction> >&, std::shared_ptr<TrackedOp>, ThreadPool::TPHandle*)+0x362) [0x5581ed032bc2]
17: (ReplicatedPG::queue_transactions(std::vector<ObjectStore::Transaction, std::allocator<ObjectStore::Transaction> >&, std::shared_ptr<OpRequest>)+0x81) [0x5581ecea5e51]
18: (ReplicatedBackend::sub_op_modify(std::shared_ptr<OpRequest>)+0xd39) [0x5581ecef89e9]
19: (ReplicatedBackend::handle_message(std::shared_ptr<OpRequest>)+0x2fb) [0x5581ecefeb4b]
20: (ReplicatedPG::do_request(std::shared_ptr<OpRequest>&, ThreadPool::TPHandle&)+0xbd) [0x5581ece4c63d]
21: (OSD::dequeue_op(boost::intrusive_ptr<PG>, std::shared_ptr<OpRequest>, ThreadPool::TPHandle&)+0x409) [0x5581eccdd2e9]
22: (PGQueueable::RunVis::operator()(std::shared_ptr<OpRequest> const&)+0x52) [0x5581eccdd542]
23: (OSD::ShardedOpWQ::_process(unsigned int, ceph::heartbeat_handle_d*)+0x73f) [0x5581eccfd30f]
24: (ShardedThreadPool::shardedthreadpool_worker(unsigned int)+0x89f) [0x5581ed440b2f]
25: (ShardedThreadPool::WorkThreadSharded::entry()+0x10) [0x5581ed4441f0]
26: (Thread::entry_wrapper()+0x75) [0x5581ed4335c5]
27: (()+0x76fa) [0x7f8ed9e4e6fa]
28: (clone()+0x6d) [0x7f8ed7caeb5d]
NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.
Thanks & Regards
Somnath
-----Original Message-----
From: Sage Weil [mailto:sweil@xxxxxxxxxx]
Sent: Monday, August 22, 2016 2:57 PM
To: Somnath Roy
Cc: Mark Nelson; ceph-devel
Subject: RE: Bluestore assert
On Mon, 22 Aug 2016, Somnath Roy wrote:
> FYI, I was running rocksdb by enabling universal style compaction
> during this time.
How are you selecting universal compaction?
sage
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