NAME

       xfs_spaceman - show free space information about an XFS filesystem

SYNOPSIS

       xfs_spaceman [ -c cmd ] file
       xfs_spaceman -V

DESCRIPTION

       xfs_spaceman reports and controls free space usage in an XFS filesystem.

OPTIONS

       -c cmd    xfs_spaceman  commands may be run interactively (the default) or as arguments on
                 the command line. Multiple -c arguments may be given. The commands  are  run  in
                 the sequence given, then the program exits.

COMMANDS

       freesp [ -dgrs ] [-a agno]... [ -b | -e bsize | -h bsize | -m factor ]
              With  no  arguments,  freesp  shows  a  histogram  of all free space extents in the
              filesystem.  The command takes the following options:

                 -a agno
                     Collect free space information from this allocation group.  This option  can
                     be specified multiple times to collect from multiple groups.

                 -b  This argument establishes that the histogram bin sizes are successive powers
                     of two.  This is the default, and is mutually exclusive with the -e, -h, and
                     -m options.

                 -d  Print debugging information such as the raw free space extent information.

                 -g  Print the free space block and extent counts for each AG.

                 -e bsize
                     Set  all  histogram  bin sizes to a specific value.  This option is mutually
                     exclusive with the -b, -h, and -m options.

                 -h bsize
                     Create a histogram bin with a lower bound of this value.  The upper bound of
                     this bin will be one less than the lower bound of the next highest histogram
                     bin.  This option can be given multiple  times  to  control  the  exact  bin
                     sizes.  This option is mutually exclusive with the -b, -e, and -m options.

                 -m factor
                     Create  each  histogram  bin with a size that is this many times the size of
                     the prvious bin created.  This option is mutually exclusive with the -b, -e,
                     and -h options.

                 -r  Query the realtime device for free space information.

                 -s  Display a summary of the free space information found.

       info   Displays  selected geometry information about the filesystem.  The opened file must
              be a mount point of a XFS filesystem.  The output will have the  same  format  that
              xfs_info(8) prints when querying a filesystem.

       health [ -a agno] [ -c ] [ -f ] [ -i inum ] [ -q ] [ paths ]
              Reports the health of the given group of filesystem metadata.
                 -a agno
                     Report on the health of the given allocation group.
                 -c  Scan  all inodes in the filesystem and report each file's health status.  If
                     the -a option is given, scan only the inodes in that AG.
                 -f  Report on the health of metadata that affect the entire filesystem.
                 -i inum
                     Report on the health of a specific inode.
                 -q  Report only unhealthy metadata.
                 paths
                     Report on the health of the files at the given path.

       help [ command ]
              Display a brief description of one or all commands.

       prealloc [ -u id ] [ -g id ] [ -p id ] [ -m minlen ] [ -s ]
              Removes speculative preallocation.  If no -u, -g, or -p  options  are  given,  this
              command acts on all files.  The command takes the following options:

                 -u uid
                     Clear  all  speculative  preallocations  for  files with this user id.  This
                     option can be given in combination with the -g  and  -p options.

                 -g gid
                     Clear all speculative preallocations for files with  this  group  id.   This
                     option can be given in combination with the -u  and  -p options.

                 -p pid
                     Clear  all  speculative preallocations for files with this project id.  This
                     option can be given in combination with the -u  and  -g options.

                 -m minlen
                     Ignore all files smaller than this size.  Units can  be  supplied  for  this
                     argument.

                 -s  Wait for removal to complete.

       print  Display a list of all open files.

       quit   Exit xfs_spaceman.

       trim ( -a agno | -f | offset length ) [ -m minlen ]
              Instructs  the underlying storage device to release all storage that may be backing
              free space in the filesystem.  The command takes the following options: (One of -a,
              -f, or the offset/length pair are required.)

                 -a agno
                     Trim  free  space  extents  in  the  given allocation group.  This option is
                     mutually exclusive with the -f option and the offset/length options.

                 -f  Trim all free space in the filesystem.  This option  is  mutually  exclusive
                     with the -a option and the offset/length options.

                 option, length
                     Trim  all  free  space  within  the physical range defined by the offset and
                     length from this filesystem.  Units can  be  appended  to  these  arguments.
                     This option is mutually exclusive with the -a and -f options.

                 -m minlen
                     Do  not  trim  free  space  extents  shorter than this length.  Units can be
                     appended to this argument.

                                                                                  xfs_spaceman(8)