Re: ZFS PANIC: HELP.

On 23.02.2022 22:01, Larry Rosenman wrote:
> On 02/23/2022 8:58 pm, Alexander Motin wrote:
>> On 23.02.2022 21:52, Larry Rosenman wrote:
>>> 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?
>>
>> Why do you need to import without mounting file systems?  I think you
>> may actually wish them to be mounted to replay their ZILs.  Just use
>> -R option to mount file systems in some different place.
> 
> I get the errors shown at:
> https://www.lerctr.org/~ler/14-mount-R-output.png
> 
> Should I worry?  Or do something(tm) here?

This looks weird, but may possibly depend on mount points topology, 
whether /mnt is writable, etc.  What happen if you export it now and try 
to import it in normal way on 14 without -F?

-- 
Alexander Motin