Re: ata4.00: exception Emask 0x0 SAct 0x1b7ffff SErr 0x0 action 0x6 frozen

[Tim Small <tim@seoss.co.uk>]

On 15/11/10 14:33, Pol Hallen wrote:
> [ 5485.000265] ata4.00: status: { DRDY }
> [ 5485.000293] ata4.00: failed command: READ FPDMA QUEUED
> [ 5485.000325] ata4.00: cmd 60/60:08:c7:3e:84/00:00:56:00:00/40 tag 1 ncq 
> 49152 in
> [ 5485.000326]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 
> (timeout)
> [...]
>
> how check which disk should be broke broken? or is it a controller problem?
> thanks!
>   

Could be all sorts of things - disk or controller, or cabling, or
PSU...  See the libata wiki, and run smartctl -a against each drive in
turn.  Look for non-zero reallocated sector counts, non-zero pending
sector counts (check the "raw" data field for both), as well as logged
SMART errors etc. etc.  If you have a suspect bad drive, you can use
smartctl to tell the drive to run a smart long self test.  See the
documentation.

Tim.


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