Date: Fri, 10 Jul 2020 14:25:02 -0500 From: Kyle Evans <kevans@freebsd.org> To: John Kennedy <warlock@phouka.net> Cc: Guido van Rooij <guido@gvr.org>, FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: 12.1p7 no longer boots after doing zpool upgrade -a Message-ID: <CACNAnaG3yiZmzHJgRyqVr7JdCuadvzztrVXmXYNCfx0ctbvGww@mail.gmail.com> In-Reply-To: <20200709211854.GA11731@phouka1.phouka.net> References: <20200709131201.GA3464@co.gvr.org> <CACNAnaGbCknS18yLv1ow2FFnj5xSMHXQZgxfRPMUMTb5ujB=fw@mail.gmail.com> <20200709211854.GA11731@phouka1.phouka.net>
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On Thu, Jul 9, 2020 at 4:20 PM John Kennedy <warlock@phouka.net> wrote: > > On Thu, Jul 09, 2020 at 08:24:54AM -0500, Kyle Evans wrote: > > On Thu, Jul 9, 2020 at 8:12 AM Guido van Rooij <guido@gvr.org> wrote: > > > > > > I did a zpool upgrade -a to enable large_dnode and spacemap_v2. > > > After that, I did: > > > gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 ada0 > > > gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 ada1 > > > and: > > > gpart bootcode -p /boot/boot1.efifat -i 1 ada0 > > > gpart bootcode -p /boot/boot1.efifat -i 1 ada1 > > > > > > Now the system no longer boots from either disk and drops to the efi shell. > > > > This method of updating the ESP is no longer recommended for new 12.x > > installations -- we now more carefully construct the ESP with an > > /EFI/FreeBSD/loader.efi where loader.efi is /boot/loader.efi. You will > > want to rebuild this as such, and that may fix part of your problem. > > So, I've got a stable box: > > FreeBSD 12.1-STABLE #156 r362983+cd7a9efd329c(stable/12): Tue Jul 7 07:42:17 PDT 2020 > > I've got almost the same situation, except I haven't shot myself in the foot yet. > My partitions: > > # gpart show nvd0 nvd1 > => 40 976773088 nvd0 GPT (466G) > 40 409600 1 efi (200M) > 409640 1024 2 freebsd-boot (512K) > 410664 984 - free - (492K) > 411648 16777216 3 freebsd-swap (8.0G) > 17188864 959584256 4 freebsd-zfs (458G) > 976773120 8 - free - (4.0K) > > => 40 976773088 nvd1 GPT (466G) > 40 409600 1 efi (200M) > 409640 1024 2 freebsd-boot (512K) > 410664 984 - free - (492K) > 411648 16777216 3 freebsd-swap (8.0G) > 17188864 959584256 4 freebsd-zfs (458G) > 976773120 8 - free - (4.0K) > > [... snip ...] > > If this was a Pre-UEFI, I would be expecting to do (only) something like: > > gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 nvd0 > gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 nvd1 > > IE, might hit either drive, update the freebsd-boot partition by # on both, > and special note that the # is now one higher because of the EFI partition. > > The FreeBSD wiki still has the "old" way of doing it here... > > https://wiki.freebsd.org/RootOnZFS/GPTZFSBoot > > ... but your newer way of doing it here: > > https://wiki.freebsd.org/UEFI > > So the newer way of doing it would be something like this, except I'd by updating > the file rather than looking at it's checksum/version? > > strings -a < /boot/loader.efi | grep -A1 'EFI loader' > FreeBSD/amd64 EFI loader, Revision 1.1 > (Tue Jul 7 07:33:24 PDT 2020 warlock@ouroboros.phouka.net) > > mount -t msdosfs /dev/nvd0p1 /mnt > md5 -r /boot/loader.efi /mnt/efi/boot/BOOTx64.efi > 9f64a96f3170e3327ca7dad1d574d852 /boot/loader.efi > cbff58cc8ee79ce7342f5be23ad14ba3 /mnt/efi/boot/BOOTx64.efi > strings -a < /mnt/efi/boot/BOOTx64.efi | grep -A1 'EFI loader' > FreeBSD/amd64 EFI loader, Revision 1.1 > |/-\ > umount -v /mnt > > mount -t msdosfs /dev/nvd1p1 /mnt > md5 -r /mnt/efi/boot/BOOTx64.efi > cbff58cc8ee79ce7342f5be23ad14ba3 /mnt/efi/boot/BOOTx64.efi > umount -v /mnt > > At least some of the checksum difference is because WITHOUT_REPRODUCIBLE_BUILD=YES. > Yes, this looks correct to me. > (Sorry for extra details, but I know when I was researching this, I ran > across a *lot* of examples where we didn't have a GPT dump and people > were just using partition #s and if you stomp on the wrong partition > you're going to have a bad day, so leaving some specific examples here.) > > So one recipe doesn't even seem to make the freebsd-boot partition, so is it > optional for a pure UEFI boot? Should we always gpart-bootcode it if it exists > and upgrade BOOTx64.efi when the EFI partition exists, or is there a few more > wrinkles we need to worry about? > Correct, freebsd-boot is not needed for a pure UEFI boot. I wouldn't necessarily bother updating the freebsd-boot partition unless you suspect you may need to switch back to legacy boot at some point; UEFI is now rock-solid on all of my systems, so I've personally found no such need and on many of them I've removed the old freebsd-boot bits. If you've got an ESP, you should update that manually. If you want to maintain the option of legacy boot, you should use gpart-bootcode for that but don't use it on the ESP with boot1.efifat. > In any case, is it a logical theory that my possible boot-order problem > is because drive order got swapped and maybe one wasn't properly updated? > They seem to be the same: > > # md5 /dev/nvd[01]p2 > MD5 (/dev/nvd0p2) = 2ded438a2c97ea551446cc2d1d3b498e > MD5 (/dev/nvd1p2) = 2ded438a2c97ea551446cc2d1d3b498e > > Ideally I'd like to have not boot through the UEFI boot menu every time. > > I'm not sure why the drive order seems to matter right now. > When you get booted back to the UEFI menu, is it a specific drive that you must select or do both equally work from that point? Thanks, Kyle Evans
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