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

George Kontostanos gkontos.mail at gmail.com
Wed Feb 15 10:56:34 UTC 2012


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On a second look I doubt that this has anything to do with an outdated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.

Was this a new 9.0-RC2 install?
Also, how many devices are in the pool that you are trying to boot from?

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


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