mfsmaster -v
mfsmaster -h
mfsmaster is the master program of Moose File System.
-v print version information and exit
-h print usage information and exit
-c CFGFILE specify alternative path of configuration file (default is mfsmaster.cfg in system configuration directory)
-u log undefined configuration values (when default is assumed)
-f run in foreground, don't daemonize
-t LOCKTIMEOUT how long to wait for lockfile (in seconds; default is 1800 seconds)
-i ignore some metadata structure errors (attach orphans to root, ignore names without inode, etc.). DO NOT use unless you are ready to pick up the pieces. See https://github.com/moosefs/moosefs/issues/151 for discussion.
-a automatically restore metadata from change logs
-e start without metadata (usable only in pro version - used to start additional masters)
-x produce more verbose output
-xx even more verbose output
ACTION is the one of start, stop, restart, reload, test, restore or kill. Default action is restart. The test action will yield one of two responses: "mfsmaster pid: PID" or "mfsmaster is not running". The kill action will send a SIGKILL to the currently running master process. SIGHUP or reload action forces mfsmaster to reload all configuration files. restore tries to restore metadata file using backup metadata files and changelogs; if successful it will store recovered metadata file end stop, it will never start master process.
mfsmaster.cfg configuration file for MooseFS master process; refer to mfsmaster.cfg\|(5) manual for details
mfsexports.cfg MooseFS access control file; refer to mfsexports.cfg\|(5) manual for details
mfstopology.cfg Network topology definitions; refer to mfstopology.cfg\|(5) manual for details
.mfsmaster.lock lock file of running MooseFS master process (created in data directory)
metadata.mfs, metadata\.mfs\.back MooseFS filesystem metadata image (created in data directory)
changelog.*.mfs MooseFS filesystem metadata change logs (created in data directory; merged into metadata.mfs once per hour)
data.stats MooseFS master charts state (created in data directory)