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32 .Nd "disk labelization control utility"
70 utility is used for GEOM provider labelization.
71 A label can be set up on a GEOM provider in two ways:
77 method, no metadata are stored on the devices, so a label has to be configured
78 by hand every time it is needed.
81 method uses on-disk metadata to store the label and detect it automatically in
84 This GEOM class also provides volume label detection for file systems.
85 Those labels cannot be set with
87 but must be set with the appropriate file system utility, e.g.\& for UFS
88 the file system label is set with
90 Currently supported file systems are:
92 .Bl -bullet -offset indent -compact
94 UFS1 volume names (directory
97 UFS2 volume names (directory
100 UFS1 file system IDs (directory
103 UFS2 file system IDs (directory
106 MSDOSFS (FAT12, FAT16, FAT32) (directory
107 .Pa /dev/msdosfs/ ) .
109 CD ISO9660 (directory
110 .Pa /dev/iso9660/ ) .
116 .Pa /dev/reiserfs/ ) .
122 Support for partition metadata is implemented for:
124 .Bl -bullet -offset indent -compact
126 GPT labels (directory
133 Generic labels are created in the directory
136 The first argument to
138 indicates an action to be performed:
139 .Bl -tag -width ".Cm destroy"
141 Create temporary label
143 for the given provider.
149 will be loaded if it is not loaded already.
153 for the given provider.
156 method, where metadata is stored in a provider's last sector.
159 will be loaded if it is not loaded already.
161 Turn off the given label by its
163 This command does not touch on-disk metadata!
168 Clear metadata on the given devices.
170 Dump metadata stored on the given devices.
186 .Bl -tag -width indent
188 Force the removal of the specified labels.
195 variables can be used to control the behavior of the
198 The default value is shown next to each variable.
199 .Bl -tag -width indent
200 .It Va kern.geom.label.debug : No 0
204 This can be set to a number between 0 and 2 inclusive.
205 If set to 0 minimal debug information is printed, and if set to 2 the
206 maximum amount of debug information is printed.
209 Exit status is 0 on success, and 1 if the command fails.
211 The following example shows how to set up a label for disk
213 create a file system on it, and mount it:
214 .Bd -literal -offset indent
215 glabel label -v usr /dev/da2
217 mount /dev/label/usr /usr
224 The next example shows how to set up a label for a UFS file system:
225 .Bd -literal -offset indent
226 tunefs -L data /dev/da4s1a
227 mount /dev/ufs/data /mnt/data
244 .An Pawel Jakub Dawidek Aq pjd@FreeBSD.org