Re: zfs mirrored pool dead after a disk death and reset

Hello,

On 25.02.2022 18:30, Steven Hartland wrote:
> Have you tried removing the dead disk physically. I've seen in the 
> past a bad disk sending causing bad data to be sent to the controller 
> causing knock on issues.

Yup, I did. I've even built 13.0 and tried to import it there. 13.0 
complains dirrerently, but still refuses to import:


# zpool import
pool: data
id: 15967028801499953224
state: ONLINE
status: One or more devices contains corrupted data.
action: The pool can be imported using its name or numeric identifier.
see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-4J
config:
data        ONLINE
nvd0      UNAVAIL  corrupted data
nvd1      ONLINE


And while importing:

# zpool import -FX data
cannot import 'data': one or more devices is currently unavailable

and I see the following in dmesg:

Feb 25 16:44:41 db0 ZFS[4857]: failed to load zpool data
Feb 25 16:44:41 db0 ZFS[4873]: failed to load zpool data
Feb 25 16:44:41 db0 ZFS[4889]: failed to load zpool data
Feb 25 16:44:41 db0 ZFS[4909]: failed to load zpool data
Feb 25 16:45:13 db0 ZFS[4940]: pool log replay failure, zpool=data
Feb 25 16:45:13 db0 ZFS[4952]: pool log replay failure, zpool=data
Feb 25 16:45:13 db0 ZFS[4964]: pool log replay failure, zpool=data
Feb 25 16:45:13 db0 ZFS[4976]: pool log replay failure, zpool=data

>
> Also the output doesn't show multiple devices, only nvd0. I'm hoping 
> you didn't use nv raid to create the mirror, as that means there's no 
> ZFS protection?
Nope, I'm aware of that. Acrually, the redundant drive is still there, 
but dead already, it's the FAULTED device 9566965891719887395 in my 
quotes below.

>
>     [root@db0:~]# zpool import
>     pool: data
>     id: 15967028801499953224
>     state: FAULTED
>     status: One or more devices contains corrupted data.
>     action: The pool cannot be imported due to damaged devices or data.
>     The pool may be active on another system, but can be imported using
>     the '-f' flag.
>     see: http://illumos.org/msg/ZFS-8000-5E
>     config:
>     data                   FAULTED  corrupted data
>     9566965891719887395  FAULTED  corrupted data
>     nvd0                 ONLINE
>

Thanks.

Eugene.