Subject: Re: scsipi changes
To: Manuel Bouyer <>
From: Matthew Jacob <>
List: tech-kern
Date: 07/16/2001 14:22:55
> > Still, it's the target driver who really should be deciding how important a
> > selection timeout is.
> I can't see why, sorry. Can you give an example of why selection timeout
> should be handled differently for 2 different type of device ?

Different access methods:

Method 1: SCSI Scanner- just single shot stuff, assumed a non-critical
application, just return ENXIO to app. End of story.

Method 2: SCSI Disk- delay and retry.

It's possible that these are the wrong places for such policy. It might
should be the case that the applications or the kernel caller should decide
what to do. However, from a pragmatic point of view neither applications or
kernel subsystems are typically written robustly enough to figure out quite
what to do with such information.