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Date:      Wed, 23 Feb 2022 20:52:00 -0600
From:      Larry Rosenman <ler@lerctr.org>
To:        Alexander Motin <mav@freebsd.org>
Cc:        Freebsd current <freebsd-current@freebsd.org>
Subject:   Re: ZFS PANIC: HELP.
Message-ID:  <1b6b2017ba69e6fda1ca237c3016ac61@lerctr.org>
In-Reply-To: <95c7c326-e2f9-6e66-7b97-b9fb2671f4ad@FreeBSD.org>
References:  <07c0c9c34b4a4133acab597c96867d27@lerctr.org> <95c7c326-e2f9-6e66-7b97-b9fb2671f4ad@FreeBSD.org>

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On 02/23/2022 8:41 pm, Alexander Motin wrote:
> Hi Larry,
> 
> The panic you are getting is an assertion, enabled by kernel built
> with INVARIANTS option.  On 13 you may just not have that debugging
> enabled to hit the issue.  But that may be only a consequence.
> Original problem I guess in possibly corrupted ZFS intent log records
> (or false positive), that could happen so due to use of -F recovery
> option on `zpool import`, that supposed to try import pool at earlier
> transaction group if there is some metadata corruption found.  It is
> not supposed to work 100% and only a last resort.  Though may be that
> assertion is just excessively strict for that specific recovery case.
> If as you say pool can be imported and scrubbed on 13, then I'd expect
> following clean export should allow later import on 14 without -F.
> 
> On 23.02.2022 21:21, Larry Rosenman wrote:
>> 
>> 've got my main dev box that crashes on 14 with the screen shot at 
>> https://www.lerctr.org/~ler/14-zfs-crash.png.
>> Booting from a 13-REL USB installer it imports and scrubs.
>> 
>> Ideas?
>> 
>> I can either video conference with shared screen or give access to the 
>> console via my Dominion KVM.
>> 
>> Any help/ideas/etc welcome I really need to get this box back.
>> 
>> 
How can I import the pool withOUT it mounting the FileSystems so I can 
export it cleanly on the 13 system?


-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 214-642-9640                 E-Mail: ler@lerctr.org
US Mail: 5708 Sabbia Dr, Round Rock, TX 78665-2106



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