nilfs-clean - run garbage collector on NILFS file system

       Ryusuke Konishi <konishi.ryusuke@gmail.com>

nilfs-clean is part of the nilfs-utils package and is available from https://nilfs.sourceforge.io.

       The  nilfs-clean  program  communicates  with nilfs_cleanerd(8) program and controls execution of garbage
       collection (GC) on NILFS2 file systems.  It can be used to manually run  garbage  collection  of  a  file
       system mounted on device to increase the free space.

       If a GC command is specified by one of the following options (i.e. ´-c´,´-s´,´-r´, and ´-l´ options), the
       command  is sent to and performed on the nilfs_cleanerd(8) program.  If no commands are specified, nilfs-clean just triggers a one-pass cleaning.

       When device is omitted, nilfs-clean selects an active NILFS2 file system in the system.

       This command is valid only for mounted NILFS2 file systems, and will fail if the  device  has  no  active
       mounts.

       nilfs-clean - run garbage collector on NILFS file system

-b, --break, --stop
              Stop garbage collection.

       -c, --reload[=conffile]
              Request reloading config file to cleaner process.  If an optional configuration file is given, the
              file  is  read by nilfs_cleanerd(8) program and cleaner configuration is reset to the information.
              If no argument is given, a configuration file selected by nilfs_cleanerd(8) will be reloaded.

       -l, --status
              Display cleaner status.

       -h, --help
              Display help message and exit.

       -m, --min-reclaimable-blocks=COUNT[%]
              Specify the minimum number of reclaimable blocks in a segment before it can  be  cleaned.  If  the
              argument  is  followed  by  a  percent  sign, it represents the ratio of blocks in a segment. This
              argument will only have an effect if the use_set_suinfo flag is set in the configuration file.

       -p, --protection-period=interval
              Set protection period for a cleaner run.  The interval parameter is an integer value and specifies
              the minimum time that deleted or overrode data will be preserved  in  the  file  system.   Smaller
              values  will  increase  free space made by garbage collection.  Optionally, the interval parameter
              may be suffixed by one of the following units designators: ´s´, ´m´, ´h´, ´d´,´w´,´M´, or ´Y´, for
              seconds, minutes, hours, days, weeks, months, or years, respectively.

       -q, --quit
              Shutdown cleaner daemon.

       -r, --resume
              Resume garbage collection.

       -s, --suspend
              Suspend garbage collection.  Note that if users manually  suspend  garbage  collection  with  this
              option, it will not restart automatically until user resumes the garbage collection.

       -S, --speed=COUNT[/SECONDS]
              Set garbage collection speed for a cleaner run.

       -v, --verbose
              Verbose mode.

       -V, --version
              Display version and exit.

nilfs(8), nilfs_cleanerd(8).

nilfs-utils version 2.2                             Apr 2014                                      NILFS-CLEAN(8)

nilfs-clean [options] [device]