xfs_spaceman(8) System Manager's Manual xfs_spaceman(8)
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 filesys-
tem.
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 op-
tions:
-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 op-
tions.
-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 op-
tion 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 off-
set/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 off-
set/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 ex-
clusive 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)