On Tue, May 9, 2023 at 8:09 AM Zbigniew Jędrzejewski-Szmek
<zbyszek(a)in.waw.pl> wrote:
On Tue, May 09, 2023 at 12:02:26PM +0200, Gerd Hoffmann wrote:
> Hi,
>
> > If we want to change the default here, let's do some proper cleanup:
> > 1. the split between ESP and XBOOTLDR is only useful in the case where
> > ESP already existed and was small. If the installer is *creating*
> > an ESP, it should just make it large enough.
>
> And install kernels to /boot/efi in case /boot is not a XBOOTLDR
> filesystem?
If /boot is not a XBOOTLDR, then we only have one file system which is
the ESP. It could be mounted on /boot or on /efi or maybe even /boot/efi (*).
The kernels would then go to /boot/EFI/Linux, /efi/EFI/Linux, or /boot/efi/EFI/Linux,
respectively. (When you write /boot/efi, it's not clear what exactly you
mean. The duplication of "efi" and "EFI" on on case-insensitive
system
is confusing.)
(*) This is actually something that'd need to be figure out.
/boot/efi is the worst choice; either /boot or /efi would be OK,
but something needs to be chosen.
> > 2. having a second partition with a second (different) file system
> > implementation just increases the footprint and attack surface for
> > no gain. If we create XBOOTLDR, make it like the ESP (i.e. VFAT
> > in almost all realistic scenarios).
>
> While being at it also give the XBOOTLDR the correct type uuid according
> to the discoverable partitions spec.
Of course ;-]
I've been asked to consider converting /boot to a Btrfs subvolume so
that it no longer has a fixed space allocation to deal with the ever
increasing amount of firmware required for NVIDIA GPUs[1]. This is
currently incompatible with how systemd views the world, because the
"discoverable partition spec" is wired to partitions, and there is no
equivalent spec for subvolumes of a volume. And I imagine that
XBOOTLDR (whatever that is) also would have a problem with this.
Also, as an aside, there is now a "from-scratch" Btrfs EFI driver in
development[2] (and for your personal horror, an NTFS one too[3]).
[1]:
https://pagure.io/fedora-btrfs/project/issue/7#comment-855321
[2]:
https://github.com/maharmstone/btrfs-efi
[3]:
https://github.com/maharmstone/ntfs-efi
--
真実はいつも一つ!/ Always, there's only one truth!