zfs corruption (again) due to interupted resilver and power faults.

[Michelle Sullivan]

Michelle Sullivan wrote:
> Trying now thanks (and no I hadn’t - wasn’t aware of the sysctl)

Failed with the same old...

http://flashback.sorbs.net/packages/zfs/image6.jpeg


Michelle

> Michelle Sullivan
> http://www.mhix.org/
> Sent from my iPad
>
>> On 20 Mar 2019, at 05:21, Xin LI <delphij at gmail.com> wrote:
>>
>> 0x7a is 122, which is ECKSUM, it seems that your space map is corrupt.
>>
>> Have you tried importing with vfs.zfs.recover=1 set in loader and import the pool with -o readonly?
>>
>> Cheers,
>>
>>> On Tue, Mar 19, 2019 at 6:15 AM Michelle Sullivan <michelle at sorbs.net> wrote:
>>> So lost my pool again...  this time looks more hopeless, but for simpler
>>> reasons.
>>>
>>> Basically a significant power issue occurred whilst in a resilver
>>> process which I am lucky no-one was killed - though if I find the idiot
>>> there is still time...
>>>
>>> anyhoo, to the issue at hand...
>>>
>>> FreeBSD 12 (memstick boot)
>>>
>>> Can't import the pool 'storage'
>>>
>>> All devices are now online (one wasn't but that issue has been resolved
>>> by byte copying the drive to a new drive and inserting)
>>>
>>> Its a zraid2 set... only the one drive had failed and was in the middle
>>> of the resilver when the power issue occurred.
>>>
>>> Pool refuses to import (even with -FfX)
>>>
>>> zdb reports 4 metdata errors and no (zero) data errors... see:
>>> http://flashback.sorbs.net/packages/zfs/image4.jpeg
>>>
>>> 'zdb -bcd' asserts out in space_map_load (123 of 163) see:
>>> http://flashback.sorbs.net/packages/zfs/image5.jpeg
>>>
>>> Thoughts on how I might recover this?
>>>
>>> (Really need to as was in the middle of blowing away the original
>>> (backup) server for a rebuild and new backup.. so I have quite literally
>>> no backups, and every photo I have taken are in that zvol on the pool -
>>> there should be no reason why it's corrupt as with the exception of the
>>> resilver - there was no active writing to the pool.)
>>>
>>> Yours hopefully,
>>>
>>> Michelle
>>>
>>> -- 
>>> Michelle Sullivan
>>> http://www.mhix.org/
>>>
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-- 
Michelle Sullivan
http://www.mhix.org/