LinuxQuestions.org - GRUB doesn't boot a manual snapshot entry

Hello!

I am using openSUSE Tumbleweed and I want to make use of snasphots, without using snapper.

So, I created a manual snapshot of my system:

Code:

sudo btrfs subvol snapshot /mnt/@ /mnt/@snapshots/1/snapshot/

I added this entry to /etc/grub.d/40_custom:

Code:

menuentry 'openSUSE Tumbleweed Maio'  --class opensuse --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-58ce4ca7-01f9-4a45-aa77-b7e6567b7f69' {

        load_video

        set gfxpayload=keep

        insmod gzio

        insmod part_gpt

        insmod btrfs

        set root='hd0,gpt4'

        if [ x$feature_platform_search_hint = xy ]; then

          search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4  58ce4ca7-01f9-4a45-aa77-b7e6567b7f69

        else

          search --no-floppy --fs-uuid --set=root 58ce4ca7-01f9-4a45-aa77-b7e6567b7f69

        fi

        echo    'Loading Linux 6.3.1-1-default ...'

        linux  /@snapshots/1/snapshot/boot/vmlinuz-6.3.1-1-default root=UUID=58ce4ca7-01f9-4a45-aa77-b7e6567b7f69 rootflags=subvol="@snapshots/1/snapshot" ${extra_cmdline} splash=silent quiet security=apparmor nosgx mitigations=auto

        echo    'Loading initial ramdisk ...'

        initrd  /@snapshots/1/snapshot/boot/initrd-6.3.1-1-default

}

I regenerated grub.cfg through YaST

Then, when I tried to boot the snapshot from GRUB menu but I get this error message:

https://postimg.cc/4n9LJX4d