Adding upstream version 4.22.0.upstream/4.22.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 214 insertions, 0 deletions

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+.TH xfs_spaceman 8
+.SH NAME
+xfs_spaceman \- show free space information about an XFS filesystem
+.SH SYNOPSIS
+.B xfs_spaceman
+[
+.B \-c
+.I cmd
+]
+.I file
+.br
+.B xfs_spaceman \-V
+.SH DESCRIPTION
+.B xfs_spaceman
+reports and controls free space usage in an XFS filesystem.
+.SH OPTIONS
+.TP 1.0i
+.BI \-c " cmd"
+.B xfs_spaceman
+commands may be run interactively (the default) or as arguments on
+the command line. Multiple
+.B \-c
+arguments may be given. The commands are run in the sequence given,
+then the program exits.
+
+.SH COMMANDS
+.TP
+.BI "freesp [ \-dgrs ] [-a agno]... [ \-b | \-e bsize | \-h bsize | \-m factor ]"
+With no arguments,
+.B freesp
+shows a histogram of all free space extents in the filesystem.
+The command takes the following options:
+
+.RS 1.0i
+.PD 0
+.TP 0.4i
+.B \-a agno
+Collect free space information from this allocation group.
+This option can be specified multiple times to collect from multiple groups.
+
+.TP
+.B \-b
+This argument establishes that the histogram bin sizes are successive powers of two.
+This is the default, and is mutually exclusive with the
+.BR "-e" ", " "-h" ", and " "-m" " options."
+
+.TP
+.B \-d
+Print debugging information such as the raw free space extent information.
+
+.TP
+.B \-g
+Print the free space block and extent counts for each AG.
+
+.TP
+.B \-e bsize
+Set all histogram bin sizes to a specific value.
+This option is mutually exclusive with the
+.BR "-b" ", " "-h" ", and " "-m" " options."
+
+.TP
+.B \-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
+.BR "-b" ", " "-e" ", and " "-m" " options."
+
+.TP
+.B \-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
+.BR "-b" ", " "-e" ", and " "-h" " options."
+
+.TP
+.B \-r
+Query the realtime device for free space information.
+
+.TP
+.B \-s
+Display a summary of the free space information found.
+.PD
+.RE
+.TP
+.B 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
+.BR "xfs_info" "(8)"
+prints when querying a filesystem.
+.TP
+.BI "health [ \-a agno] [ \-c ] [ \-f ] [ \-i inum ] [ \-q ] [ paths ]"
+Reports the health of the given group of filesystem metadata.
+.RS 1.0i
+.PD 0
+.TP 0.4i
+.B \-a agno
+Report on the health of the given allocation group.
+.TP
+.B \-c
+Scan all inodes in the filesystem and report each file's health status.
+If the
+.B \-a
+option is given, scan only the inodes in that AG.
+.TP
+.B \-f
+Report on the health of metadata that affect the entire filesystem.
+.TP
+.B \-i inum
+Report on the health of a specific inode.
+.TP
+.B \-q
+Report only unhealthy metadata.
+.TP
+.B paths
+Report on the health of the files at the given path.
+.PD
+.RE
+.TP
+.BR "help [ " command " ]"
+Display a brief description of one or all commands.
+.TP
+.BI "prealloc [ \-u id ] [ \-g id ] [ -p id ] [ \-m minlen ] [ \-s ]"
+Removes speculative preallocation.
+If no
+.BR "-u" ", " "-g" ", or " "-p"
+options are given, this command acts on all files.
+The command takes the following options:
+
+.RS 1.0i
+.PD 0
+.TP 0.4i
+.B \-u uid
+Clear all speculative preallocations for files with this user id.
+This option can be given in combination with the
+.B "-g" " and " "-p"
+options.
+
+.TP
+.B \-g gid
+Clear all speculative preallocations for files with this group id.
+This option can be given in combination with the
+.B "-u" " and " "-p"
+options.
+
+.TP
+.B \-p pid
+Clear all speculative preallocations for files with this project id.
+This option can be given in combination with the
+.B "-u" " and " "-g"
+options.
+
+.TP
+.B \-m minlen
+Ignore all files smaller than this size.
+Units can be supplied for this argument.
+
+.TP
+.B \-s
+Wait for removal to complete.
+.PD
+.RE
+.TP
+.B print
+Display a list of all open files.
+.TP
+.B quit
+Exit
+.BR xfs_spaceman .
+.TP
+.BI "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
+.BR -a ", " -f ", or the "
+.IR offset / length
+pair are required.)
+
+.RS 1.0i
+.PD 0
+.TP 0.4i
+.B \-a agno
+Trim free space extents in the given allocation group.
+This option is mutually exclusive with the
+.BR "-f" " option and the "
+.IR "offset" "/" "length" " options."
+
+.TP
+.B \-f
+Trim all free space in the filesystem.
+This option is mutually exclusive with the
+.BR "-a" " option and the "
+.IR "offset" "/" "length" " options."
+
+.TP
+.IR "option" ", " "length"
+Trim all free space within the physical range defined by the
+.I offset
+and
+.I length
+from this filesystem.
+Units can be appended to these arguments.
+This option is mutually exclusive with the
+.BR "-a" " and " "-f" " options."
+
+.TP
+.B \-m minlen
+Do not trim free space extents shorter than this length.
+Units can be appended to this argument.
+.PD
+.RE