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)