lost array, started with metadata issues

[Anaxagoras-bc]

I moved my DAS from a proxmox host with an lsi 9200 HBA to a truenas host with a dell 355e HBA. The array was clean when unplugged from proxmox. upon plugging it into truenas it had a bunch of checksum errors, i assumed due to lose cable, so i shut everything down and reseated everything, the pool was suspended, so i ran a zpool clear on it to reset the error counters. after running the clear i ran a zpool scrub just to make sure nothing was corrupt.

this is the first error i saw

truenas_admin@truenas[~]$ sudo zpool status -v Archive
[sudo] password for truenas_admin: 
  pool: Archive
 state: ONLINE
status: One or more devices has experienced an error resulting in data
        corruption.  Applications may be affected.
action: Restore the file in question if possible.  Otherwise restore the
        entire pool from backup.
   see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-8A
  scan: scrub in progress since Sat Jun  6 18:06:40 2026
        11.1T / 192T scanned at 1.80G/s, 4.56T / 192T issued at 758M/s
        0B repaired, 2.37% done, 3 days 00:03:03 to go
config:
        NAME                                      STATE     READ WRITE CKSUM
        Archive                                   ONLINE       0     0     0
          raidz2-0                                ONLINE       0     0     0
            b25497f0-ab5e-2a41-971d-b2ace23b1a3b  ONLINE       0     0    28
            7320ab18-040e-2444-b84b-90bbe0c45d5d  ONLINE       0     0    28
            481750df-43ea-5f43-80f0-bc78e278ded1  ONLINE       0     0    28
            9ee258ee-8e08-ce40-a7f8-ea48c1b42712  ONLINE       0     0    30
            6c13d703-4eba-4d4d-b19c-fb8383a3fa20  ONLINE       0     0    24
            4c446531-1235-744f-88e6-ddbe94bdc9c2  ONLINE       0     0    24
          raidz2-1                                ONLINE       0     0     0
            a2ba15a3-a981-11ed-90cb-589cfc10ff87  ONLINE       0     0    34
            7417deb8-a981-11ed-90cb-589cfc10ff87  ONLINE       0     0    30
            c1e90993-a981-11ed-90cb-589cfc10ff87  ONLINE       0     0    36
            a9f91a37-a8ec-11ed-90cb-589cfc10ff87  ONLINE       0     0    36
            4d9c1047-aa8b-11ed-90cb-589cfc10ff87  ONLINE       0     0    34
            50c80919-a981-11ed-90cb-589cfc10ff87  ONLINE       0     0    34
errors: Permanent errors have been detected in the following files:
        <metadata>:<0x0>
        <metadata>:<0x167>
        <metadata>:<0xf9>
        <metadata>:<0x3cfe>

while trying to figure out what the error was the system locked up, so i rebooted it. I can no longer import the pool. All the disks are present an online.

zpool import shows the array and all 12 drives are online.
when trying to import the pool i either get
"cannot import 'Archive': insufficient replicas Destroy and re-create the pool from a backup source."
OR
"cannot import 'Archive': one or more devices is currently unavailable"

Unfortunatly i don't have backups of about 15% of the data on the pool that is irreplaceable.

[amotin]

IIRC one of the reason to suspend the pool can be a write error. Clearing the errors is not a way out. I don't remember if it tries to replay the errored write, but if not, it is a request for troubles. You may try to import the pool as read-only at some older TXG, hoping it might be some more complete, but at that point it already becomes a data recovery project.