How do I disable an internal SATA drive by identifying it specifically?

TheJooomes · 03-16-2023, 11:24 PM

After unmounting and running sync, I'd like to completely turn off the 2nd internal SSD, as part of a script. Echoing 1 to /sys/block/sda/device/delete seems to have the effect that I want, but it specifies the drive via sda. I'd much prefer by-id or similar because sda is flexible and could change if I plug in another drive. So is there a better way to specify the desired drive?

lvm_ · 03-17-2023, 12:28 AM

You can disk get uuids e.g. by running 'lsblk -o +UUID'. Also, running sync after umount is useless and before is pointless - umount syncs filesystem anyway.

syg00 · 03-17-2023, 12:37 AM

UUID is simply a link - and is not guaranteed to be unique despite its name. Even in your own environment. As the base device doesn't have a UUID, you'd have to slice-and-dice the result anyway.
Maybe try the wwid instead ?.