zroot won't mount after 9.0-RC2 -> 9.0-RELEASE upgrade

[George Kontostanos]

On Wed, Feb 15, 2012 at 5:26 PM, Daniel Shahaf <d.s at daniel.shahaf.name> wrote:
> George Kontostanos wrote on Wed, Feb 15, 2012 at 12:56:33 +0200:
>> On Wed, Feb 15, 2012 at 12:15 PM, George Kontostanos
>> <gkontos.mail at gmail.com> wrote:
>> > On Wed, Feb 15, 2012 at 5:09 AM, Daniel Shahaf <danielsh at apache.org> wrote:
>> >> Daniel Staal wrote on Tue, Feb 14, 2012 at 21:39:40 -0500:
>> >>> --As of February 15, 2012 2:31:10 AM +0200, Daniel Shahaf is alleged
>> >>> to have said:
>> >>>
>> >>> >One of our amd64 servers runs 9.0-RC2 (releng/9.0 at r228325) with a zfs
>> >>> >root.
>> >>> >
>> >>> >It fails to boot the 9.0-RELEASE (releng/9.0 at r229305) GENERIC kernel
>> >>> >(self compiled) with a mountfrom error:
>> >>> >
>> >>> >    http://people.apache.org/~danielsh/infra/loki-20120215-mountfrom.png
>> >>> >    mountfrom> zfs:zroot
>> >>> >    Trying to mount root from zfs:zroot []...
>> >>> >    Mounting from zfs:zroot failed with error 2.
>> >>> >
>> >>> >We've tried to upgrade the zpool format 15->28; the symptoms are
>> >>> >unchanged.  (The zroot fs is at version 4.)
>> >>> >
>> >>> >Why does 9.0-RC2 boot while 9.0-RELEASE (as /boot/testkernel) doesn't?
>> >>> >What can do to boot 9.0-RELEASE from our zfs root filesystem?
>> >>>
>> >>> --As for the rest, it is mine.
>> >>>
>> >>> Did you update the bootloader?  Depending on when you installed the
>> >>> system, it's possible your upgrading the zpool means the bootloader
>> >>> can't read it.
>> >>>
>> >>
>> >> Immediately after upgrading the zroot zpool I ran
>> >>
>> >>    gpart bootcode -p /boot/gptzfsboot -i 1 ${devices}
>> >>
>> >> as instructed in /usr/src/UPDATING.  I did not pass -b.
>> >>
>> >>> Daniel T. Staal
>> >
>> > Hi could you try passing the -b switch like this:
>> >
>> > gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ${devices}
>> >
>>
>>
>> On a second look I doubt that this has anything to do with an outdated
>> bootcode.
>>
>
> *nod* trying 'gpart bootcode -b' is on the list still, though.  It
> shouldn't hurt.
>
>> Was this a new 9.0-RC2 install?
>
> No, it was an upgrade from 8.2-RELEASE.
>
>> Also, how many devices are in the pool that you are trying to boot from?
>>
>
> Six: mfid[0-5]p3.
>
>> --
>> George Kontostanos
>> Aicom telecoms ltd
>> http://www.aisecure.net
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Try loading geom_part_gpt.ko to see if it helps.

-- 
George Kontostanos
Aicom telecoms ltd
http://www.aisecure.net