[OmniOS-discuss] Hung ZFS Pool

[Dan McDonald]

> On Dec 9, 2015, at 11:13 AM, Brian Hechinger <wonko at 4amlunch.net> wrote:
> 
> I didn’t know about pgrep, no. :)

The Solaris/illumos ptools are a huge win.  Learn about 'em.  :)

Back to the main discussion...

> So the ‘zpool clear’ has fixed things a bit. The touch processes have all exited.
> 
> I can now touch a file on that pool.
> 
> A zpool scrub later and this is the status:
> 
>  pool: zoom
> state: ONLINE
> status: One or more devices has experienced an unrecoverable error.  An
>        attempt was made to correct the error.  Applications are unaffected.
> action: Determine if the device needs to be replaced, and clear the errors
>        using 'zpool clear' or replace the device with 'zpool replace'.
>   see: http://illumos.org/msg/ZFS-8000-9P
>  scan: scrub repaired 6K in 0h0m with 0 errors on Wed Dec  9 10:25:33 2015
> config:
> 
>        NAME          STATE     READ WRITE CKSUM
>        zoom          ONLINE       0     0     0
>          mirror-0    ONLINE       0     0     0
>            c4t1d0s1  ONLINE       0     0     0
>            c5t1d0s1  ONLINE       0     0     2
> 
> errors: No known data errors
> 
> I’m going to try to re-run iozone later and see if I can’t get it to happen again.
> 
> This is concerning.

I see this, and I think "c5t1d0" is broken HW and needs to be replaced.

Combine that with "unrecoverable IO failures" and you really should be planning to replace that drive.

Dan