FileStore: sync object_map when we syncfs #4718
Merged
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This way, even if leveldb/rocksdb is on another filesystem/disk,
it will still be synced before trimming the journal. Note, this
patch only syncs the object_map in the !backend->can_checkpoint()
case since if the backend can checkpoint, the checkpoint must
also capture the object_map since we have not been setting replay
guards in the object_map.
Signed-off-by: Samuel Just sjust@redhat.com