is the metadata server daemon for the Ceph distributed file system.
One or more instances of cmds collectively manage the file system
namespace, coordinating access to the shared OSD cluster.
daemon instance should have a unique name. The name is used
to identify daemon instances in the ceph.conf.
Once the daemon has started, the monitor cluster will normally assign it
a logical rank, or put it in a standby pool to take over for another daemon
that crashes. If a specific rank may be optionally specified on the
command line, the daemon will be assigned that rank, or will be put in a
separate standby queue specifically for that rank.
Start up as (or standby for) the given MDS rank. If not specified, a rank will
be assigned by the monitor cluster.
Shadow a the given MDS rank. The given MDS log will be replayed, checking for
Debug mode: do not daemonize after startup (run in foreground) and send log output
do not daemonize after startup (run in foreground), but log to the usual location.
Useful when run via
-c ceph.conf, --conf=ceph.conf
Use ceph.conf configuration file instead of the default /etc/ceph/ceph.conf
to determine monitor addresses during startup.
Connect to specified monitor (instead of looking through ceph.conf).