Re: [PATCH as468] Retry supposedly "unrecoverable" hardware errors

James Bottomley
2005-02-17T15:12:29Z

On Thu, 2005-02-17 at 14:27 +1000, Douglas Gilbert wrote:
> Recent SPC-3 and SBC-2 drafts treat the sense keys of
> MEDIUM ERROR and HARDWARE ERROR in a similar way.
> Both can return an "info" field which has the same
> meaning (lba of first failure). The distinction is that
> MEDIUM ERROR is a little more precise (at least for
> magnetic rotating media) **. For flash ram the distinction
> is moot.

My copy of SPC-3 (r21d) still defined HARDWARE ERROR in Table 27 as

HARDWARE ERROR: Indicates that the device server detected a non-
recoverable hardware failure
(e.g., controller failure, device failure, or parity error) while
performing the command or during a self
test.

which looks pretty non-retryable to me ... where does it say that the
error might be retryable?

James