Hi list,
since SeaBIOS 1.14.0 (QEMU 5.1) VMs with LVM root disks spanning more
than one PV fail to boot, if only the first is set as bootable. I
believe this is due to the changes in SeaBIOS only initializing drives
marked as 'bootable' by QEMU.
One fix is to mark all disks containing root data as bootable, but
existing setups will still break on upgrade (where only the disk
containing the bootloader is marked). This is not ideal.
Discovered by a user in our bugtracker:
https://bugzilla.proxmox.com/show_bug.cgi?id=3011
and verified by installing Ubuntu 20.04 w/ LVM and GRUB on virtio-scsi,
then expanding the LV to a second disk.
I found that just reverting SeaBIOS to 1.13.0 makes it work again, same
guest install, even with QEMU 5.1.
Is this intended behaviour? A bug in GRUB? Any fix or workaround?
~ Stefan
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