On Mon, Mar 27, 2006 at 09:15:35AM -0800, Linus Torvalds wrote: > On Mon, 27 Mar 2006, Douglas Gilbert wrote: > > > > There are two things that really count: > > 1) the identifier (preferably a world wide unique name) > > of the logical unit that is being addressed > > 2) a topological description of how that logical unit > > is connected > > And "SCSI ID" doesn't describe either. > > > Linux's <hctl> may be a ham fisted way of describing > > a path through a topology, but it easily beats /dev/sdabc > > and /dev/sg4711 . > > Sure, you can easily beat it by selecting what you compare it against. > > But face it, /dev/sdabc or /dev/sg4711 simply isn't what you should > compare against. What you should compare against is > > /dev/cdrom > /sys/bus/ide/devices/0.0/block:hda/dev > /dev/uuid/3d9e6e8dfaa3d116 > .. > > and a million OTHER ways to specify which device you're interested in. > > The fact is, they can potentially all do the SCSI command set. And a "SCSI > ID" makes absolutely zero sense for them (those three devices may be the > same device, they may not be, they might be on another machine, who > knows..) If this ioctl is generally supported, then you'll be able to find out if they're all the same ;-) - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
