That somewhat symmetric title is to note a new device feature on DragonFly: if you use disklabel to label a disk, its parts will automatically appear under /dev. So, if you label a disk MYVOLUME, and it has 3 parts, a, b, and d, you will automatically gain a /dev/part-by-label/MYVOLUME.a, /dev/part-by-label/MYVOLUME.b, and a /dev/part-by-label/MYVOLUME.d.
4 Replies to “Disk labels now have labeled parts”
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Nice. A little bit of FreeBSD GEOM behavior.
That always helps with entries in fstab, you don’t need to worry about device renumbering.
More good work by Matt.
device renumbering is sometimes an issue on many os, including fbsd, dfly fixed it many moons ago: “features: DEVFS’s integration with block device serial numbers which allows a DragonFly system to reference disk drives by serial number instead of by their base device name. Thus drives can be trivially migrated between physical ports and driver changes (e.g., base device name changes) become transparent to the system.”
unlike fbsd, dfbsd has devtab(5)
Interesting. First time to know devtab(5). Thanks.