On Mon, 22 Aug 2016, Somnath Roy wrote: > Sage, > Got the following asserts on two different path with the latest master. > > 1. > os/bluestore/BlueFS.cc: 1377: FAILED assert(h->file->fnode.ino != 1) > > ceph version 11.0.0-1688-g6f48ee6 (6f48ee6bc5c85f44d7ca4c984f9bef1339c2bea4) > 1: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x80) [0x55f0d46f9cd0] > 2: (BlueFS::_flush_range(BlueFS::FileWriter*, unsigned long, unsigned long)+0x1bed) [0x55f0d43cb34d] > 3: (BlueFS::_flush(BlueFS::FileWriter*, bool)+0xa7) [0x55f0d43cb467] > 4: (BlueFS::_flush_and_sync_log(std::unique_lock<std::mutex>&, unsigned long, unsigned long)+0x3b2) [0x55f0d43ccf12] > 5: (BlueFS::_fsync(BlueFS::FileWriter*, std::unique_lock<std::mutex>&)+0x35b) [0x55f0d43ce2fb] > 6: (BlueRocksWritableFile::Sync()+0x62) [0x55f0d43e5c32] > 7: (rocksdb::WritableFileWriter::SyncInternal(bool)+0x2d1) [0x55f0d456f4f1] > 8: (rocksdb::WritableFileWriter::Sync(bool)+0xf0) [0x55f0d45709a0] > 9: (rocksdb::CompactionJob::FinishCompactionOutputFile(rocksdb::Status const&, rocksdb::CompactionJob::SubcompactionState*)+0x4e6) [0x55f0d45b2506] > 10: (rocksdb::CompactionJob::ProcessKeyValueCompaction(rocksdb::CompactionJob::SubcompactionState*)+0x14ea) [0x55f0d45b4cca] > 11: (rocksdb::CompactionJob::Run()+0x479) [0x55f0d45b5c49] > 12: (rocksdb::DBImpl::BackgroundCompaction(bool*, rocksdb::JobContext*, rocksdb::LogBuffer*, void*)+0x9c0) [0x55f0d44a4610] > 13: (rocksdb::DBImpl::BackgroundCallCompaction(void*)+0xbf) [0x55f0d44b147f] > 14: (rocksdb::ThreadPool::BGThread(unsigned long)+0x1d9) [0x55f0d4568079] > 15: (()+0x98f113) [0x55f0d4568113] > 16: (()+0x76fa) [0x7f06101576fa] > 17: (clone()+0x6d) [0x7f060dfb7b5d] > > > 2. > > 5700 time 2016-08-21 23:15:50.962450 > os/bluestore/BlueFS.cc: 1377: FAILED assert(h->file->fnode.ino != 1) > > ceph version 11.0.0-1688-g6f48ee6 (6f48ee6bc5c85f44d7ca4c984f9bef1339c2bea4) > 1: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x80) [0x55d9959bfcd0] > 2: (BlueFS::_flush_range(BlueFS::FileWriter*, unsigned long, unsigned long)+0x1bed) [0x55d99569134d] > 3: (BlueFS::_flush(BlueFS::FileWriter*, bool)+0xa7) [0x55d995691467] > 4: (BlueFS::_flush_and_sync_log(std::unique_lock<std::mutex>&, unsigned long, unsigned long)+0x3b2) [0x55d995692f12] > 5: (BlueFS::sync_metadata()+0x1c3) [0x55d995697c33] > 6: (BlueRocksDirectory::Fsync()+0xd) [0x55d9956ab98d] > 7: (rocksdb::DBImpl::WriteImpl(rocksdb::WriteOptions const&, rocksdb::WriteBatch*, rocksdb::WriteCallback*, unsigned long*, unsigned long, bool)+0x13fa) [0x55d995778c2a] > 8: (rocksdb::DBImpl::Write(rocksdb::WriteOptions const&, rocksdb::WriteBatch*)+0x2a) [0x55d9957797aa] > 9: (RocksDBStore::submit_transaction_sync(std::shared_ptr<KeyValueDB::TransactionImpl>)+0x6b) [0x55d99573cb5b] > 10: (BlueStore::_kv_sync_thread()+0x1745) [0x55d995589e65] > 11: (BlueStore::KVSyncThread::entry()+0xd) [0x55d9955b754d] > 12: (Thread::entry_wrapper()+0x75) [0x55d99599f5e5] > 13: (()+0x76fa) [0x7f8a0bdde6fa] > 14: (clone()+0x6d) [0x7f8a09c3eb5d] > > > I saw this assert is newly introduced in the code. > FYI, I was running rocksdb by enabling universal style compaction during this time. This is a new assert in the async compaction code. I'll see if I can reproduce it with the bluefs tests with universal compaction... that should make it easy to track down. sage > > Thanks & Regards > Somnath > > -----Original Message----- > From: ceph-devel-owner@xxxxxxxxxxxxxxx [mailto:ceph-devel-owner@xxxxxxxxxxxxxxx] On Behalf Of Somnath Roy > Sent: Tuesday, August 16, 2016 12:45 PM > To: Sage Weil > Cc: Mark Nelson; ceph-devel > Subject: RE: Bluestore assert > > Sage, > The replay bug *is fixed* with your patch. I am able to make the OSDs (and cluster) up after hitting the db assertion bug. > Presently, I am trying to root cause the debug the db assertion issue. > > Thanks & Regards > Somnath > > -----Original Message----- > From: Sage Weil [mailto:sweil@xxxxxxxxxx] > Sent: Monday, August 15, 2016 12:54 PM > To: Somnath Roy > Cc: Mark Nelson; ceph-devel > Subject: RE: Bluestore assert > > On Sun, 14 Aug 2016, Somnath Roy wrote: > > Sage, > > I did this.. > > > > root@emsnode5:~/ceph-master/src# git diff diff --git > > a/src/kv/RocksDBStore.cc b/src/kv/RocksDBStore.cc index > > 638d231..bcf0935 100644 > > --- a/src/kv/RocksDBStore.cc > > +++ b/src/kv/RocksDBStore.cc > > @@ -370,6 +370,10 @@ int RocksDBStore::submit_transaction(KeyValueDB::Transaction t) > > utime_t lat = ceph_clock_now(g_ceph_context) - start; > > logger->inc(l_rocksdb_txns); > > logger->tinc(l_rocksdb_submit_latency, lat); > > + if (!s.ok()) { > > + derr << __func__ << " error: " << s.ToString() > > + << "code = " << s.code() << dendl; } > > return s.ok() ? 0 : -1; > > } > > > > @@ -385,6 +389,11 @@ int RocksDBStore::submit_transaction_sync(KeyValueDB::Transaction t) > > utime_t lat = ceph_clock_now(g_ceph_context) - start; > > logger->inc(l_rocksdb_txns_sync); > > logger->tinc(l_rocksdb_submit_sync_latency, lat); > > + if (!s.ok()) { > > + derr << __func__ << " error: " << s.ToString() > > + << "code = " << s.code() << dendl; } > > + > > return s.ok() ? 0 : -1; > > } > > int RocksDBStore::get_info_log_level(string info_log_level) @@ -442,7 > > +451,8 @@ void RocksDBStore::RocksDBTransactionImpl::rmkey(const > > string &prefix, void RocksDBStore::RocksDBTransactionImpl::rm_single_key(const string &prefix, > > const string > > &k) { > > - bat->SingleDelete(combine_strings(prefix, k)); > > + //bat->SingleDelete(combine_strings(prefix, k)); > > + bat->Delete(combine_strings(prefix, k)); > > } > > > > But, the db crash is still happening with the following log message. > > > > rocksdb: submit_transaction_sync error: NotFound: code = 1 > > > > It seems it is not related to rm_single_key as I am hitting this from https://github.com/ceph/ceph/blob/master/src/os/bluestore/BlueStore.cc#L5108 as well where rm_single_key is not called. > > May be I should dump the transaction and see what's in there ? > > Yeah. Unfortunately I think it isn't trivial to dump the kv transactions because they're being constructed by rocksdb (WriteBack or something). > Not sure if there is a dump for that (I'm guessing not?). You'd need to write one, or build a kludgey lookaside map that can be dumped. > > > I am hitting the BlueFS replay bug I mentioned earlier and applied your patch (https://github.com/ceph/ceph/pull/10686) but not helping. > > Is it because I needed to run with this patch from the beginning and not just during replay ? > > Yeah, the bug happens before replay.. we are writing a bad entry into the bluefs log. > > sage > > > > > > Thanks & Regards > > Somnath > > > > -----Original Message----- > > From: Sage Weil [mailto:sweil@xxxxxxxxxx] > > Sent: Thursday, August 11, 2016 3:32 PM > > To: Somnath Roy > > Cc: Mark Nelson; ceph-devel > > Subject: RE: Bluestore assert > > > > On Thu, 11 Aug 2016, Somnath Roy wrote: > > > Sage, > > > Regarding the db assert , I hit that again on multiple OSDs while I was populating 40TB rbd images (~35TB written before crash). > > > I did the following changes in the code.. > > > > > > @@ -370,7 +370,7 @@ int RocksDBStore::submit_transaction(KeyValueDB::Transaction t) > > > utime_t lat = ceph_clock_now(g_ceph_context) - start; > > > logger->inc(l_rocksdb_txns); > > > logger->tinc(l_rocksdb_submit_latency, lat); > > > - return s.ok() ? 0 : -1; > > > + return s.ok() ? 0 : -s.code(); > > > } > > > > > > int RocksDBStore::submit_transaction_sync(KeyValueDB::Transaction > > > t) @@ -385,7 +385,7 @@ int RocksDBStore::submit_transaction_sync(KeyValueDB::Transaction t) > > > utime_t lat = ceph_clock_now(g_ceph_context) - start; > > > logger->inc(l_rocksdb_txns_sync); > > > logger->tinc(l_rocksdb_submit_sync_latency, lat); > > > - return s.ok() ? 0 : -1; > > > + return s.ok() ? 0 : -s.code(); > > > } > > > int RocksDBStore::get_info_log_level(string info_log_level) { diff > > > --git a/src/os/bluestore/BlueStore.cc > > > b/src/os/bluestore/BlueStore.cc index fe7f743..3f4ecd5 100644 > > > --- a/src/os/bluestore/BlueStore.cc > > > +++ b/src/os/bluestore/BlueStore.cc > > > @@ -4989,6 +4989,9 @@ void BlueStore::_kv_sync_thread() > > > ++it) { > > > _txc_finalize_kv((*it), (*it)->t); > > > int r = db->submit_transaction((*it)->t); > > > + if (r < 0 ) { > > > + dout(0) << "submit_transaction returned = " << r << dendl; > > > + } > > > assert(r == 0); > > > } > > > } > > > @@ -5026,6 +5029,10 @@ void BlueStore::_kv_sync_thread() > > > t->rm_single_key(PREFIX_WAL, key); > > > } > > > int r = db->submit_transaction_sync(t); > > > + if (r < 0 ) { > > > + dout(0) << "submit_transaction_sync returned = " << r << dendl; > > > + } > > > + > > > assert(r == 0); > > > > > > > > > This is printing -1 in the log before asset. So, the corresponding code from the rocksdb side is "kNotFound". > > > It is not related to space as I hit this same issue irrespective of db partition size is 100G or 300G. > > > It seems some kind of corruption within Bluestore ? > > > Let me now the next step. > > > > Can you add this too? > > > > diff --git a/src/kv/RocksDBStore.cc b/src/kv/RocksDBStore.cc index > > 638d231..b5467f7 100644 > > --- a/src/kv/RocksDBStore.cc > > +++ b/src/kv/RocksDBStore.cc > > @@ -370,6 +370,9 @@ int > > RocksDBStore::submit_transaction(KeyValueDB::Transaction t) > > utime_t lat = ceph_clock_now(g_ceph_context) - start; > > logger->inc(l_rocksdb_txns); > > logger->tinc(l_rocksdb_submit_latency, lat); > > + if (!s.ok()) { > > + derr << __func__ << " error: " << s.ToString() << dendl; } > > return s.ok() ? 0 : -1; > > } > > > > It's not obvious to me how we would get NotFound when doing a Write into the kv store. > > > > Thanks! > > sage > > > > > > > > Thanks & Regards > > > Somnath > > > > > > -----Original Message----- > > > From: Sage Weil [mailto:sweil@xxxxxxxxxx] > > > Sent: Thursday, August 11, 2016 9:36 AM > > > To: Mark Nelson > > > Cc: Somnath Roy; ceph-devel > > > Subject: Re: Bluestore assert > > > > > > On Thu, 11 Aug 2016, Mark Nelson wrote: > > > > Sorry if I missed this during discussion, but why are these being > > > > called if the file is deleted? > > > > > > I'm not sure... rocksdb is the one consuming the interface. Looking through the code, though, this is the only way I can see that we could log an op_file_update *after* an op_file_remove. > > > > > > sage > > > > > > > > > > > Mark > > > > > > > > On 08/11/2016 11:29 AM, Sage Weil wrote: > > > > > On Thu, 11 Aug 2016, Somnath Roy wrote: > > > > > > Sage, > > > > > > Please find the full log for the BlueFS replay bug in the > > > > > > following location. > > > > > > > > > > > > https://github.com/somnathr/ceph/blob/master/ceph-osd.1.log.zi > > > > > > p > > > > > > > > > > > > For the db transaction one , I have added code to dump the > > > > > > rocksdb error code before the assert as you suggested and waiting to reproduce. > > > > > > > > > > I'm pretty sure this is the root cause: > > > > > > > > > > https://github.com/ceph/ceph/pull/10686 > > > > > > > > > > sage > > > > > -- > > > > > To unsubscribe from this list: send the line "unsubscribe > > > > > ceph-devel" in the body of a message to > > > > > majordomo@xxxxxxxxxxxxxxx More majordomo info at > > > > > http://vger.kernel.org/majordomo-info.html > > > > > > > > > > > > > > > > PLEASE NOTE: The information contained in this electronic mail message is intended only for the use of the designated recipient(s) named above. 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