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Date:      Fri, 02 Mar 2012 19:07:11 -0600
From:      Nathan Whitehorn <nwhitehorn@freebsd.org>
To:        Lucas Yamanishi <lyamanishi@sesda2.com>
Cc:        freebsd-ppc@freebsd.org
Subject:   Re: ZFS rootfs  on G5 970MP
Message-ID:  <277C1706-D1AE-4FC2-9486-AD361454398C@freebsd.org>
In-Reply-To: <4F513C2E.30200@sesda2.com>
References:  <4F50F579.3000507@sesda2.com> <E4EACD79-0C41-4D15-80F2-4C74965410CC@freebsd.org> <4F513C2E.30200@sesda2.com>

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It's some very low-level bug in the boot loader -> kernel init  
transition, so kdb and such are unlikely to be helpful.
-Nathan

On Mar 2, 2012, at 3:31 PM, Lucas Yamanishi wrote:

> I have to bring up another machine next week.  I was going to just dd
> the disk, but I'll try again if it'll be any help.
>
> Are there any kdb commands I should run when I get there?
>
>
> ##########################################################
> ## *question everything*learn something*answer nothing* ##
> ##########################################################
> ## Lucas Yamanishi                                      ##
> ## Systems Administrator, ADNET Systems, Inc.           ##
> ## 7515 Mission Drive, Suite A100                       ##
> ## Lanham, MD 20706                                     ##
> ## 301-352-4646                                         ##
> ##########################################################
>
> On 03/02/2012 04:13 PM, Nathan Whitehorn wrote:
>>
>> On Mar 2, 2012, at 10:29 AM, Lucas Yamanishi wrote:
>>
>>> Is it possible?
>>>
>>> I tried using 9.0-RELEASE.  I followed the UFSBoot guide from the  
>>> wiki
>>> using a UFS /bootdir slice.  Everything was done to the T.  zfs and
>>> opensolaris modules were specified in loader.conf.  Unfortunately  
>>> when I
>>> rebooted I got this error:
>>>
>>> <pre>
>>> Trying to mount root from zfs:zroot []...
>>> Mounting from zfs:zroot failed with error 2: unknown file system.
>>>
>>> Loader variables:
>>> vfs.root.mountfrom=zfs:zroot
>>> </pre>
>>>
>>> At this point I've settled for a UFS root with ZFS /var, /tmp,  
>>> and /usr
>>> sub-hierarchies.  Sorry, that means no logs, no kbd.
>>
>> It looks like there's a bug in the ppc64 loader(8) that prevents  
>> module
>> preload from working properly. I'll see if I can track it down, but  
>> am
>> very short on time at the moment (help appreciated).
>> -Nathan
>>
>




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