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

[Michelle Sullivan]

Trying now thanks (and no I hadn’t - wasn’t aware of the sysctl)

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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