Re: UEFI question

On Thu, Nov 24, 2022 at 7:30 AM Larry Rosenman <ler@lerctr.org> wrote:
>
> On 11/24/2022 1:39 am, Alexander Leidinger wrote:
>
> Quoting Eric Borisch <eborisch@gmail.com> (from Tue, 22 Nov 2022 17:50:08 -0600):
>
> On Tue, Nov 22, 2022 at 1:50 PM Warner Losh <imp@bsdimp.com> wrote:
>
>
>
> On Tue, Nov 22, 2022, 11:42 AM Alan Somers <asomers@freebsd.org> wrote:
>
>
> I just noticed the same problem.  For mirrored installs, the
> 13.1-RELEASE installer only formats the efi partition on one hard
> disk.  Shouldn't it do both?
>
>
>
> We go back and forth on this question.... I think we should, but others got grumpy when I suggested it. Maybe just all the drives in the zpool used for the BE?
>
> Warner
>
>
> Just a “yes, please.” If you’re installing zfs root on a mirror of disks, POLA suggests the required boot bits are on both disks, too.
>
>
>
> N disks instead of both disks please.
>
> All disks which are part of a redundant root pool should get everything what is necessary to boot in case the primary boot drive of the pool fails. Theoretically we only need the amount of boot redundancy to the level of redundancy degree of the pool (can't rememeber if we now have support to boot from raidz, I only have mirrors, but some of them with more than 2 disks), but as we can't predict which drive fails until the redundancy level is reached, the only option we have is to mirror the freebsd-boot partition.
>
> If this is via gmirror or via independent partitions is another question.
>
> If we want to provide a drive failure resistant boot experience (and the zfs pool types which offer redundancy make at least the users believe we want to do that), there is not really an option to not do that.
>
> And while we're at it, I think we should mention in our upgrade instructions (e.g. src/Makefile and src/UPDATING) how to update the EFI parts too.
>
> Bye,
> Alexander.
>
> http://www.Leidinger.net Alexander@Leidinger.net: PGP 0x8F31830F9F2772BF
> http://www.FreeBSD.org    netchild@FreeBSD.org  : PGP 0x8F31830F9F2772BF
>
> we boot fine from RaidZ....
>
> All my boxes have all the disks in RaidZ.
>
> See my previous post for what my gpart show has.
>
> --
> Larry Rosenman                     http://www.lerctr.org/~ler
> Phone: +1 214-642-9640                 E-Mail: ler@lerctr.org
> US Mail: 5708 Sabbia Dr, Round Rock, TX 78665-2106


This old bug is not forgotten.  See a potential solution here:
https://reviews.freebsd.org/D42150

(repost from the correct to: address)