Re: Boot loader stuck after first stage upgrading 11.2 to 12.0-RC2

I just did push biosdisk updates to stable/12, I wonder if you could test those bits…

rgds,
toomas

> On 29 Nov 2018, at 17:01, Mark Martinec <Mark.Martinec+freebsd_at_ijs.si> wrote:
> 
> After successfully upgraded three hosts from 11.2-p4 to 12.0-RC2 (amd64,
> zfs, bios), I tried my luck with one of our production hosts, and ended up
> with a stuck loader after rebooting with a new kernel (after the first
> stage of upgrade).
> 
> These were the steps, and all went smoothly and normally until a reboot:
> 
>  freebsd-update upgrade -r 12.0-RC2
>  freebsd-update install
>  shutdown -r now
> 
> While booting, the 'BTX loader' comes up, lists the BIOS drives,
> then the spinner below the list comes up and begins turning,
> stuttering, and after a couple of seconds it grinds to a standstill
> and nothing happens afterwards.
> 
> At this point the ZFS and the bootstrap loader is supposed to
> come up, but it doesn't.
> 
> This host has too zfs pools, the system pool consists of two SSDs
> in a zfs mirror (also holding a freebsd-boot partition each), the
> other pool is a raidz2 with six JBOD disks on an LSI controller.
> The gptzfsboot in both freebsd-boot partitions is fresh from 11.2,
> both zpool versions are up-to-date with 11.2. The 'zpool status -v'
> is happy with both pools.
> 
> After rebooting from an USB drive and reverting the /boot directory
> to a previous version, the machine comes up normally again
> with the 11.2-RELEASE-p4.
> 
> I found a file init.core in the / directory, slightly predating the
> last reboot with a salvaged system - although it was probably not
> a cause of the problem, but a consequence of the rescue operation.
> 
> It is unfortunate that this is a production host, so I can't play
> much with it. One or two more quick experiments I can probably
> afford, but not much more. Should I just first wait for the
> official 12.0 release? Should I try booting with a 12.0 on USB
> and try to import pools? Suggestions welcome.
> 
> 
> 
> Now that the /boot has been manually restored to the 11.2 state,
> A SECOND QUESTION is about freebsd-update, which still thinks we are
> in the middle of an upgrade procedure. Trying now to just update
> the 11.2-RELEASE-p4 to 11.2-RELEASE-p5, the fetch complains:
> 
>  # uname -a
>  FreeBSD xxx 11.2-RELEASE-p4 FreeBSD 11.2-RELEASE-p4
>  #
>  # freebsd-version
>  11.2-RELEASE-p4
>  #
>  # freebsd-update fetch
>  src component not installed, skipped
>  You have a partially completed upgrade pending
>  Run '/usr/sbin/freebsd-update install' first.
>  Run '/usr/sbin/freebsd-update fetch -F' to proceed anyway.
> 
> So what is the right way to get rid of all traces of the
> unsuccessful upgrade, and let freebsd-update believe we are cleanly
> at 11.2-p4 ?  Removing /var/db/freebsd-update did not help.
> 
>  Mark
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