>> My new laptop uses /dev/nvme0n1 instead of /dev/sda which conflicts >> with the script I use to manage about 12 similar laptops running >> Gentoo. Is there a udev method for renaming the disk that will work >> well with any USB disks that happen to also be attached? > > I'm not certain what you mean by that, but I would guess that you want > the nvme disk to show up as /dev/sda, and the USB disk(s) to show up > as /dev/sd[b-z]. > > It is not possible to accomplish this using udev; the kernel owns the > /dev/sdX device namespace, and will sequentially create devices nodes > for SCSI-like block devices using that namespace. There is no way to > change that using a udev rule.
Can I rename /dev/sda to /dev/sd[b-z] if it's attached via USB, and then rename /dev/nvme0n1 to /dev/sda if /dev/nvme0n1 exists? Alternatively, can I rename /dev/sda to /dev/sd[b-z] if /dev/sda and /dev/nvme0n1 exist, and then rename /dev/nvme0n1 to /dev/sda if /dev/nvme0n1 exists? - Grant
