In production we're running CouchDB at log level 'error', because running at 'info' is too verbose for production. We suspect automatic compaction might not be running due to low diskspace.
http://wiki.apache.org/couchdb/Compaction#Automatic_Compaction says: "When there's not enough free disk space to compact a particular database or view index, a warning message is logged." But there is no warning log level in CouchDB as far as I know and the can_db_compact function in src/couchdb/couch_compaction_daemon.erl seems to log the message about diskspace being too low at info level. Could this be changed to error level?