Re: [linux-iscsi-devel] [question] deferred sense

Christoph Hellwig
2005-01-05T15:23:51Z

On Wed, Jan 05, 2005 at 09:21:12AM -0600, Scott M. Ferris wrote:
> On Wed, Jan 05, 2005 at 10:21:44AM +0100, Christoph Hellwig wrote:
> >
> > The kernel still doesn't hadle deferred sense correctly. In fact I'm
> > not sure it's entirely possible to handle deferred sense correctly.
> >
> > The iscsi driver variant of "translating" it to normal sense data and
> > that for disks only certainly doesn't make much sense.
>
> To be more specific, there were some devices that would fail a command
> and return deferred sense. The command didn't complete at the target,
> and the kernel wasn't retrying it because the sense was deferred
> rather than current. For those devices, the translation produced the
> desired retry.

Do you remember these devices? Might be worth adding a midlayer
blacklist entry for them.

And I suspect we should get linux-scsi in the loop for the discussion
about deferred sense handling.