1xfs_spaceman(8) System Manager's Manual xfs_spaceman(8)
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6 xfs_spaceman - show free space information about an XFS filesystem
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9 xfs_spaceman [ -c cmd ] file
10 xfs_spaceman -V
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13 xfs_spaceman reports and controls free space usage in an XFS filesys‐
14 tem.
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17 -c cmd xfs_spaceman commands may be run interactively (the default)
18 or as arguments on the command line. Multiple -c arguments
19 may be given. The commands are run in the sequence given,
20 then the program exits.
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24 freesp [ -dgrs ] [-a agno]... [ -b | -e bsize | -h bsize | -m factor ]
25 With no arguments, freesp shows a histogram of all free space
26 extents in the filesystem. The command takes the following
27 options:
28 -a agno
30 Collect free space information from this allocation
31 group. This option can be specified multiple times to
32 collect from multiple groups.
33 -b This argument establishes that the histogram bin sizes
35 are successive powers of two. This is the default, and
36 is mutually exclusive with the -e, -h, and -m options.
37 -d Print debugging information such as the raw free space
39 extent information.
40 -g Print the free space block and extent counts for each AG.
42 -e bsize
44 Set all histogram bin sizes to a specific value. This
45 option is mutually exclusive with the -b, -h, and -m
46 options.
47 -h bsize
49 Create a histogram bin with a lower bound of this value.
50 The upper bound of this bin will be one less than the
51 lower bound of the next highest histogram bin. This
52 option can be given multiple times to control the exact
53 bin sizes. This option is mutually exclusive with the
54 -b, -e, and -m options.
55 -m factor
57 Create each histogram bin with a size that is this many
58 times the size of the prvious bin created. This option
59 is mutually exclusive with the -b, -e, and -h options.
60 -r Query the realtime device for free space information.
62 -s Display a summary of the free space information found.
64 info Displays selected geometry information about the filesystem.
66 The opened file must be a mount point of a XFS filesystem. The
67 output will have the same format that xfs_info(8) prints when
68 querying a filesystem.
69 help [ command ]
71 Display a brief description of one or all commands.
72 prealloc [ -u id ] [ -g id ] [ -p id ] [ -m minlen ] [ -s ]
74 Removes speculative preallocation. If no -u, -g, or -p options
75 are given, this command acts on all files. The command takes
76 the following options:
77 -u uid
79 Clear all speculative preallocations for files with this
80 user id. This option can be given in combination with
81 the -g and -p options.
82 -g gid
84 Clear all speculative preallocations for files with this
85 group id. This option can be given in combination with
86 the -u and -p options.
87 -p pid
89 Clear all speculative preallocations for files with this
90 project id. This option can be given in combination with
91 the -u and -g options.
92 -m minlen
94 Ignore all files smaller than this size. Units can be
95 supplied for this argument.
96 -s Wait for removal to complete.
98 print Display a list of all open files.
100 quit Exit xfs_spaceman.
102 trim ( -a agno | -f | offset length ) [ -m minlen ]
104 Instructs the underlying storage device to release all storage
105 that may be backing free space in the filesystem. The command
106 takes the following options: (One of -a, -f, or the off‐
107 set/length pair are required.)
108 -a agno
110 Trim free space extents in the given allocation group.
111 This option is mutually exclusive with the -f option and
112 the offset/length options.
113 -f Trim all free space in the filesystem. This option is
115 mutually exclusive with the -a option and the off‐
116 set/length options.
117 option, length
119 Trim all free space within the physical range defined by
120 the offset and length from this filesystem. Units can be
121 appended to these arguments. This option is mutually
122 exclusive with the -a and -f options.
123 -m minlen
125 Do not trim free space extents shorter than this length.
126 Units can be appended to this argument.
127 xfs_spaceman(8)