[OpenIndiana-discuss] Diagnosis help needed

[Sašo Kiselkov]

On 06/25/2012 08:08 PM, michelle wrote:
> OK - my back is up against the wall.
> 
> mich at jaguar:~# zpool status
>   pool: data
>  state: DEGRADED
> status: One or more devices are faulted in response to persistent errors.
>         Sufficient replicas exist for the pool to continue functioning in a
>         degraded state.
> action: Replace the faulted device, or use 'zpool clear' to mark the device
>         repaired.
>   scan: scrub repaired 7.10M in 24h30m with 0 errors on Mon Jun 25
> 18:30:48 2012
> config:
> 
>         NAME        STATE     READ WRITE CKSUM
>         data        DEGRADED     0     0     0
>           raidz1-0  DEGRADED     0     0     0
>             c2t2d0  ONLINE       0     0     0
>             c2t3d0  FAULTED      0   102     0  too many errors
>             c2t4d0  ONLINE       0     0     0
> 
> errors: No known data errors
> 
> 
> The cables appear fine, so I'm dealing with either a controller issue,
> or a hard drive issue, I don't know how to interpret those earlier
> "messages" messages.
> 
> I need help please to make the right call, before I potentially loose
> 4tb of files.

Have you tried running "iostat -En c2t3d0 1" and watching it while
placing load on the machine? I've had bad SAS cabling give me weird ZFS
behavior. Meanwhile, I went a hunt for all sorts of firmware issues, not
realizing it was the physical layer which bit me.

--
Saso