Help, Pool faulted

[Harle]

System:
CPU: i7 4790
MOB: MSI mainboard, using integrated NIC and SATA controller
RAM: 32GiB non ECC
HDD: 4x HGST HUH721008ALE600 (8TB SATA)
SSD: Kingston generic, for Truenas boot

TrueNAS-12.0-U3
Problematic pool RAID Z2, 2 disk redund.

Problem:
Used Truenas as Hyper V host, passing all physical disks to vm, suddenly 3 disks degraded because com. errors, Pool was accessible and usable. I put 2 disks Offline and runned SMART test on offlined disks, everything was ok, tested online disks as well, same all ok, Pool was 2 disk online, 2 offline, degraded but usable, scrubed pool but 1 online disk stayed Degraded, Pool was degraded but accessible. Shuted-down machine. Today started it and pool stated faulted, no access.
So tried export/import pool

but can not import:

So did I nuked the pool into dust? or is salvage possible?

 

[Alecmascot]

Corrupted MetaData is usually fatal.
Search the Forum for more info.

 

[c77dk]

Are the disks still shown with

Code:

camcontrol devlist

?

 

[Harle]

camcontrol devlist

root@truenas[~]# camcontrol devlist
<SAMSUNG MZHPV256HDGL-00000 BXW2500Q> at scbus0 target 0 lun 0 (pass0,ada0)
<HGST HUH721008ALE600 LHGNT384> at scbus1 target 0 lun 0 (pass1,ada1)
<HGST HUH721008ALE600 LHGNT384> at scbus2 target 0 lun 0 (pass2,ada2)
<HGST HUH721008ALE600 LHGNT384> at scbus3 target 0 lun 0 (pass3,ada3)
<HGST HUH721008ALE600 LHGNT384> at scbus4 target 0 lun 0 (pass4,ada4)
<KINGSTON SMS200S360G 541ABBF0> at scbus5 target 0 lun 0 (pass5,ada5)
<AHCI SGPIO Enclosure 2.00 0001> at scbus6 target 0 lun 0 (pass6,ses0)

 

[Harle]

Yes all pool drives are present, I can run SMART on them, and all of them Pass. I redone SATA cabling, nothing canges, I can try drives w/o enclosure but that is likely not a problem.

 

[Harle]

So there is no way to online off-lined disks in disconnected pool?