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Document the diskid automatic label class.

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While there, also document the glabel "native" labels and explain why
there are additional nodes created for nested GEOM classes.

Reminded by:	jmg
This commit is contained in:
Ivan Voras 2014-06-02 15:05:25 +00:00
parent 4c524a4287
commit e74d21571f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=266972
1 changed files with 20 additions and 2 deletions
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22
sbin/geom/class/label/glabel.8
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@ -130,8 +130,26 @@ GPT UUIDs (directory
.Pa /dev/gptid/ ) .
.El
.Pp
Generic labels are created in the directory
.Pa /dev/label/ .
Generic disk ID strings are exported as labels in the format
.Pa /dev/diskid/GEOM_CLASS-ident
e.g.
.Pa /dev/diskid/DISK-6QG3Z026 .
.Pp
Generic labels created and managed solely by
.Xr glabel 8
are created in the
.Pa /dev/label/
directory.
.Pp
Note that for all label types, nested GEOM classes will cause additional
device nodes to be created, with context-specific data appended to their
names. E.g. for every node like
.Pa /dev/label/bigdisk
there will be additional entries for any partitions which the device
contains, like
.Pa /dev/label/bigdiskp1
and
.Pa /dev/label/bigdiskp1a .
.Pp
The first argument to
.Nm