Hi. Can anyone give me a rough idea of what the monitor database is for? I'm curious about how it is behaving in an experimental system I set up.
I have a single monitor and a single client that just connects once a second and does a "status" command. There is one OSD and one MDS in there too. This is a Hammer system with a LevelDB key-value store. This produces a fair amount of activity in the database; it looks like about 25K of updates for every "status" transaction. The database compacts periodically and over the longrun, does not grow in size. Using ceph_kvstore_tool after shutting down the monitor, I see hundreds of keys. So what does the monitor have to store to do a "status" command? I've seen clues that the activity has to do with Paxos elections, but I'm fuzzy on why elections would be happening or why they would need a persistent database. -- Bryan Henderson San Jose, California _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
