Re: Kernel fail to find rootfs with 2.02-rc[12]

[Andrei Borzenkov]

13.04.2017 18:08, DUPONCHEEL Sébastien пишет:
> Hi,
> 
> It look like there is a grub regression when using grub2-2.02-rc[12] with a 
> bios in MBR mode and GPT partitioning:
> 
> Grub does not give the boot parameters to the kernel that did not find the 
> root partition although that the partition with the good PARTUUID is listed 
> before the panic
>  and that everything works when the bios is switched to the EFI mode (i 
> haven't this issue with the 2.02-beta2 version).
> 

There are simply too many changes between beta2 and rc2 and none strikes
as particular relevant. rc2 is used by at least openSUSE Tumbleweed and
so far I am not aware of problems on PC BIOS systems.

If you can reliably reproduce the problem I suggest you try to bisect it.

> You can get more details here: 
> https://github.com/lede-project/source/pull/1026
> 
> Tests where made using LEDE and Virtualbox.
> 
> Partitioning :
> 
> sda1: ext4 (4 MB)
> 
> - /boot/vmlinuz
> - /boot/grub/50092577.cfg
> - /boot/grub/grub.cfg
> 
> serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1 --rtscts=off
> terminal_input console serial; terminal_output console serial
> 
> set default="0"
> set timeout="5"
> 
> search --file /boot/grub/50092577.cfg --set=root
> 
> menuentry "LEDE" {
>     linux /boot/vmlinuz root=PARTUUID=09BBA8CF-313E-420B-B5A8-E6B13DE60002 
> rootfstype=squashfs rootwait console=tty0 console=ttyS0,115200n8 noinitrd
> }
> 
> menuentry "LEDE (failsafe)" {
>     linux /boot/vmlinuz failsafe=true 
> root=PARTUUID=09BBA8CF-313E-420B-B5A8-E6B13DE60002 rootfstype=squashfs 
> rootwait console=tty0 console=ttyS0,115200n8 noinitrd
> }
> 
> sda2: EF00 vfat (1 MB)
> 
> - /efi/boot/bootx64.efi (grub)
> - /efi/boot/grub.cfg
> 
> search --file /boot/grub/50092577.cfg --set=root
> configfile /boot/grub/grub.cfg
> 
> sda3: EF02 raw (1MB)
> 
> - grub modules 
> 
> sda4: ext4/squashfs 
> 
> - the rootfs with the GPT PARTUUID : 09BBA8CF-313E-420B-B5A8-E6B13DE60002
> 
> Best regards,
> DUPONCHEEL Sebastien
> 
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