FCP-2 recovery problem

Baldwin, Dave Dave.Baldwin at emulex.com
Mon Jun 26 20:10:57 PDT 2000


* From the T10 Reflector (t10 at t10.org), posted by:
* "Baldwin, Dave" <Dave.Baldwin at emulex.com>
*
Matt,

It would not work with the change you are suggesting. If I send OX_ID=1 and
CRN=6 to LUN=1, then send CRN 7 through CRN 5 (wraparound) to LUN=2 (maybe a
disk), then send OX_ID=1 and CRN=6 to LUN=1 (which gets dropped), I have the
same problem.

Best regards,
Dave Baldwin

Matt Wakeley wrote:

> *
> * From the fc reflector, posted by:
> * Matt Wakeley <matt_wakeley at agilent.com>
> *
> Charles,
>
> If the CRN was *not* based on LU, your proposal would work...
>
> "Binford, Charles" wrote:
>
> > At this point my plan is working - single LUN.  But consider Multi-LUN.
> > IF
> > you change the scenario only slightly we break:
> >
> > CMD ------OX_ID=1, CRN=6, LUN=1 ---------------------->
> >
> >            <---------------------------     Response
> >
> > CMD -----OX_ID=1, CRN=6, LUN=2 ----->  X (dropped frame)
>
> If the above had a CRN of 7 (since both LUs are in the same target),
> everything would work fine.
>
> -Matt

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