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I am getting a huge number of messages on one out of three nodes showing Manual compaction starting all the time. I see no such of log entries on the other nodes in the cluster. Mar 16 06:40:11 storage1n1-chi docker[24502]: debug 2019-03-16 06:40:11.441 7f6967af4700 4 rocksdb: [/home/jenkins-build/build/workspace/ceph-build/ARCH/x86_64/AVAILABLE_ARCH/x86_64/AVAILABLE_DIST/centos7/DIST/centos7/MACHINE_SIZE/huge/release/13.2.2/rpm/el7/BUILD/ceph-13.2.2/src/rocksdb/db/db_impl_compaction_flush.cc:1024] [default] Manual compaction starting Mar 16 06:40:11 storage1n1-chi docker[24502]: message repeated 4 times: [ debug 2019-03-16 06:40:11.441 7f6967af4700 4 rocksdb: [/home/jenkins-build/build/workspace/ceph-build/ARCH/x86_64/AVAILABLE_ARCH/x86_64/AVAILABLE_DIST/centos7/DIST/centos7/MACHINE_SIZE/huge/release/13.2.2/rpm/el7/BUILD/ceph-13.2.2/src/rocksdb/db/db_impl_compaction_flush.cc:1024] [default] Manual compaction starting] Mar 16 06:42:21 storage1n1-chi docker[24502]: debug 2019-03-16 06:42:21.466 7f6970305700 4 rocksdb: [/home/jenkins-build/build/workspace/ceph-build/ARCH/x86_64/AVAILABLE_ARCH/x86_64/AVAILABLE_DIST/centos7/DIST/centos7/MACHINE_SIZE/huge/release/13.2.2/rpm/el7/BUILD/ceph-13.2.2/src/rocksdb/db/db_impl_compaction_flush.cc:77] [JOB 1021] Syncing log #194307 I am not sure what triggers those message on one node an not on the others. Checking config on all mons debug_leveldb 4/5 override debug_memdb 4/5 override debug_mgr 0/5 override debug_mgrc 0/5 override debug_rocksdb 4/5 override Documentation tells nothing about the compaction logs or at least I couldn't find anything specific to my issue. You should look to docker side I think, because this is manual compaction, like `ceph daemon osd.0 compact` from admin socket or `ceph tell osd.0 compact` from admin cli.
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