RE: iSCSI: Re: iSCSI & Linked Commands

[Charles Monia <cmonia@NishanSystems.com>]

Hi:

This seems like a non-issue.

As I recall, what triggered this thread was the concern that the iSCSI had
transport had to do something special to support linked commands. While
there were and continue to be issues with existing implementations, these
seem to be strictly confined to the SCSI layer.

I don't believe linked commands impose any requirements on iSCSI over and
above what's needed to support normal unlinked commands.

Charles
> -----Original Message-----
> From: Stephen Bailey [mailto:steph@cs.uchicago.edu]
> Sent: Monday, April 23, 2001 6:16 AM
> To: ips@ece.cmu.edu
> Subject: iSCSI: Re: iSCSI & Linked Commands 
> 
> 
> Julian,
> 
> > According to your logic no FCP implementation can use 
> linked commands?
> > Is this true for all OS's?  Is it a verified fact or foloklor?
> 
> In my experience it's fact.  I have never used a SCSI stack which both
> supported AND used linked commands.  Like some others here, I always
> assumed AIX might :^) Ralph has pointed out that T10 is well aware
> that the feature is not popular.  There are other ways of
> accomplishing the same thing that are less likely to blow up in your
> face.
> 
> > Is it so also for the new MS StorPort driver?
> 
> I don't know, but I'd be really surprised if they did use linked
> commands.  You have to be pretty nuts to rely on a feature that's not
> even exercised by most SCSI implementations.
> 
> Steph
>