tech-kern: sharing disks on the same bus with multiple hosts

Subject: sharing disks on the same bus with multiple hosts
To: None <tech-kern@NetBSD.org>
From: Erik E. Fair <fair@NetBSD.org>
List: tech-kern
Date: 04/09/2004 13:01:36

NetBSD supports at least three busses that can have multiple hosts on 
them: SCSI, FireWire, and USB. Has anyone we know actually tried to 
share, say, a disk between multiple hosts on the same SCSI bus? 
Obviously for that case, some of the host SCSI IDs would have to be 
pre-set to something other than 7, and after that, there is a 
question of access arbitration and cache coherency...

	curious,

	Erik <fair@netbsd.org>