On 26.10.2021 12:38, Matthias Schoepfer wrote: > Hi! > > I have quite a funny behavior that I am not able to grasp. I am using > grub on an "embedded" device to switch between two root file system > partitions (A / B update schema). To set / read the partition, I use the > grubenv. This part works as a charm. > > Now I switched to eMMC as storage. I gave it a gpt partition table and > besides a EFI parition, I have the root partition labeled rootfs1 and > rootfs2. Since the numbers of the devices may be different when for > example a USB drive is attached, I am using the PARTLABELs for getting > the root device. > > While > > search --label rootfs1 >
It searches for filesystem label, not for partition label. > finds the rootfs1, it does not find > > search --label rootfs2 > > even if I give the correct hints. When I boot "manually" with > (hd3,gpt3), everything works and the linux kernel is finding the root > partition given as > > root=PARTLABEL=rootfs2 rootwait > > What can I do to debug this?! > Show output of blkid after booting Linux with both devices connected. > I am using grub2 as shipped with yocto hardknott: > > https://alpha.gnu.org/gnu/grub/grub-2.06~rc1.tar.xz > > Modules build in: boot linux ext2 fat serial part_msdos part_gpt normal > efi_gop iso9660 search loadenv test acpi squash4 all_video multiboot2 > > Any help how to tackle this is appreciated. > > Regards, > > Matthias > > >
