I'm still not sure I understand partitions properly, and am even more confused after checking the man pages of glabel():-
From my reading this example of glabel looks to be assigning a label to a device (disk) not a partition, and then formats the device
Shouldn't the example be
EXAMPLES
The following example shows how to set up a label for disk ``da2'', cre-
ate a file system on it, and mount it:
glabel label -v usr /dev/da2
newfs /dev/label/usr
mount /dev/label/usr /usr
[...]
umount /usr
glabel stop usr
glabel unload
The next example shows how to set up a label for a UFS file system:
tunefs -L data /dev/da4s1a
mount /dev/ufs/data /mnt/data
From my reading this example of glabel looks to be assigning a label to a device (disk) not a partition, and then formats the device
Shouldn't the example be
glabel label usr /dev/da0p2
?