Some troubles with grub with buster point release 10.8

Steffen Grunewald steffen.grunewald at
Thu Feb 11 10:14:01 CET 2021


On Wed, 2021-02-10 at 19:59:24 +0100, Thomas Lange wrote:
> I think we want to match all real disks which can be identified by a
> name, model, serial number. Maybe also virtualized disks which have
> such an entry at by-id.

I agree with that. Hardware modifications will result in by-path entries
changing (I've got still that 20-year old ZFS demonstration in mind
where USB keydrives were pulled and rearranged in random patterns)...

On Thu, 2021-02-11 at 09:53:02 +0100, Thomas Lange wrote:
> [~]$ udevadm info -r --query=symlink /dev/sda
> /dev/disk/by-id/ata-WDC_WD3000FYYZ-01UL1B0_WD-WMC1F0499068 /dev/disk/by-path/pci-0000:01:00.0-sas-exp0x500304800096b4bf-phy17-lun-0 /dev/disk/by-id/wwn-0x50014ee35570a5e8

I'm also seeing this, and while I prefer unique IDs like the WWN this
cannot be found everywhere.

What about
 disk=`udevadm info -r --query=symlink /dev/sda | xargs -n1 | sort | head -n1`
which will select a by-id entry if that exists, and fall back to "something
else" in other cases?
The sorting will also prefer ata and scsi entries over wwn ones though...

- S

More information about the linux-fai mailing list