On 24/02/2022 20:00, Warner Losh wrote:
On Thu, Feb 24, 2022 at 11:51 AM Miroslav Lachman <[email protected]
<mailto:[email protected]>> wrote:
On 24/02/2022 17:55, Warner Losh wrote:
>
>
> On Thu, Feb 24, 2022 at 4:49 AM Miroslav Lachman
<[email protected] <mailto:[email protected]>
> <mailto:[email protected] <mailto:[email protected]>>> wrote:
>
> On 24/02/2022 10:43, Alexander Leidinger wrote:
> > Quoting Miroslav Lachman <[email protected]
<mailto:[email protected]>
> <mailto:[email protected] <mailto:[email protected]>>> (from
Wed, 23 Feb 2022
>
> >> I am not sure what I should update. This machine is EFI
boot only
> >> (this is the only one EFI machine we have).
> >
> >> Should I run:
> >> gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 nvd0
> >> gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 nvd1
> >
> > This is the bootcode zpool upgrade talks about.
> >
> >> Or should I update EFI partitions? (if so, then how?)
> >
> > The EFI partition contains the loader, not the bootcode.
> >
> > While we are at it, I'm still looking for the place where
I can find
> > which features the bootcode supports. Not all features are
> supported for
> > a root pool.
>
> Thank you for the clarification!
>
>
> If you've updated your ZFS pool and have an old system, you do
need to
> update
> the EFI boot code. None of the mbr stuff is used for EFI booting.
>
> If you have an old installation, it may be small. So ideally,
you'd copy
> over /boot/loader.efi
> to ESP:efi/boot/bootx64.efi. However, it may be too big if you
have an
> ESP created by the
> old installer. In that case, you'll need to either create a new,
larger
> ESP, or copying /boot/boot1.efi
> instead.
This machine was installed 2 years ago as FreeBSD 11.2 and then
upgraded
to 11.4 and 12.2. The last update was from 12.2-p9 to 12.2-p13 so the
machine was booting fine without modification of bootcode and with
FreeBSD 12.2-p9 but after the last update to -p13 I decided to run
"zpool upgrade".
So the question is, do I need to update efi/boot/bootx64.efi?
If you've done a zpool upgrade from before the switch to OpenZFS, then
yes. You do.
I think this is the case, zpool (and bootx64.efi) was created with 11.2
and now upgraded under 12.2. I am not sure if 12.2 is OpenZFS based (I
thought it is in 13.0)
I tried to look at it:
# mount -t msdosfs /dev/nvd0p1 /media/
# ll /media/efi/boot/
total 385
-rwxr-xr-x 1 root wheel 384K Apr 16 2018 BOOTx64.efi*
-rwxr-xr-x 1 root wheel 12B Apr 16 2018 startup.nsh*
The BOOTx64.efi is old, from 11.2 install.
The newer one in /boot/ looks bigger
478K Mar 24 2021 loader.efi
Yea. It is.
And the second question is back on bootcode. I already run gpart
bootcode:
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 nvd0
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 nvd1
If you are booting with UEFI, this code never executes.
But I found something in my notes from install time few years ago:
gpart bootcode -p /boot/boot1.efifat -i 2 /dev/nvd01
What really should be installed on freebsd-boot partition?
/boot/gptzfsboot or /boot/boot1.efifat
/boot/gptzfsboot, assuming that you are using legacy BIOS boot
and not UEFI boot. If you are using UEFI boot, then the right answer
is that it doesn't matter since it won't be used.
Yes, this machne boots with UEFI only.
As I ran
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 /dev/nvd01
am I right I must run
gpart bootcode -p /boot/boot1.efifat -i 2 /dev/nvd01
to fix it now?
Or for what is boot1.efifat useful?
# gpart show
=> 40 1953525088 nvd0 GPT (932G)
40 409600 1 efi (200M)
409640 1024 2 freebsd-boot (512K)
410664 113624 - free - (55M)
524288 20971520 3 freebsd-swap (10G)
21495808 1932001280 4 freebsd-zfs (921G)
1953497088 28040 - free - (14M)
I am sorry for asking this questions but this is the only machine with
EFI I had and never did "zpool upgrade" on it.
Ah, if you've not done a zpool upgrade with the EFI machine, you needn't
do anything to keep it working.
I did. I did "zpool upgrade" on other machines as well but they were
legacy BIOS based with simple GPT and there were not any problem. That's
why I run "zpool upgrade" on this UEFI based machine too and right after
that I realized there can be some problem.
Is there a way to test if the machine will be bootable befor I try to
reboot it? The machine is not physically accessible to me so the
recovery from failed boot is very problematic.
In that case, don't update the boot blocks, and don't do a zpool upgrade.
Yes, I think I will never zpool upgrade on this machine again.
Kind regards
Miroslav Lachman
