Hi, GRUB code can certainly read files that are on Btrfs, md devices, LUKS, LVM, and so on. But GRUB code can also write to the physical block for grubenv - but are there safe guards that prevent it from doing so if grubenv is on something like Btrfs, mdadm raid5, LUKS?
And also what about XFS? This used to be safe, but now with reflink support, grubenv could be reflink copied, meaning any overwrite is disallowed and must be COW'd. How is that handled? I'm pretty sure on Btrfs GRUB knows is can't write to grubenv, I'm just curious about the other cases. -- Chris Murphy _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
