Re: UEFI question
- Reply: Larry Rosenman : "Re: UEFI question"
- Reply: Alexander Leidinger : "Re: UEFI question"
- In reply to: Warner Losh : "Re: UEFI question"
- Go to: [ bottom of page ] [ top of archives ] [ this month ]
Date: Tue, 22 Nov 2022 23:50:08 UTC
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: > >> On Tue, May 31, 2022 at 9:27 AM John Kennedy <warlock@phouka.net> wrote: >> > >> > On Tue, May 31, 2022 at 02:32:21PM +0200, Julien Cigar wrote: >> > > I have a Dell R340 server on which installed a 13.0-RELEASE and then >> > > upgraded to 13.1-RELEASE (through freebsd-update). ZFS is used >> (raidz2). >> > > >> > > The system has the following partitions: >> https://gist.github.com/silenius/2defdd5480c5c1bc9ba2ff8940756466 >> > > Some things regarding UEFI are not clear to me: >> > > - as you can see in the partition list, the installer created an EFI >> > > partition on all 4 drives, however it looks like only the first one >> has >> > > has been populated (an mounted): >> https://gist.github.com/silenius/1220c953f905d868c1615fd0e7122bbf .. why >> ? >> > > - if I understand well if my da0 disk dies the system becomes >> > > unbootable ( >> https://gist.github.com/silenius/51d202053295270eaaeb2c02316165ee).. >> correct? >> > > - what's the correct way to fix this? should I newfs_msdos on each EFI >> > > partition and copy /boot/loader.efi as /EFI/BOOT/BOOTX64.EFI? or >> > > should I use efibootmgr? >> > > >> > > Thanks for enlightening me :) >> > >> > I use UEFI to multi-boot a lot myself, but not through efibootmgr (vs >> > picking it via UEFI/BIOS on boot manually). I'm multi-booting windows >> > and FreeBSD, so I'm being (justifiably) paranoid, but not based on >> > being burnt in recent memory. >> > >> > Depending on how your system works (drives are enumerated at startup), >> > in theory any of your disks could be da0. If you've only got a working >> > EFI partition on one, that is probably hedging your bets a bit but yes, >> > if that drive died, you'd probably be dead. >> > >> > In my dual-disk setups, I'd see an EFI and a freebsd-boot (BIOS) >> partition >> > on both disks, I split my total swap between the two (not mirrored), and >> > did ZFS "raiding" (mirroring-ish, usually) across the freebsd-zfs >> partitions. >> > >> > In my case, using the UEFI/BIOS from the motherboard, I could manually >> > pick a disk to boot from which let me vet UEFI or ZFS bootblock changes >> > for sanity before committing to both. But yes, I'd upgrade them both to >> > the same thing once I was sure it would work. >> >> 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. Thanks, - Eric >