On Mon, Oct 15, 2007 at 02:29:45PM +0100, Alan Cox wrote: > > You can pull a Model and Serial number via hdparm -i, but it's not as > > easy to manipulate as a fixed-length MAC address. That's why people > > tend to use filesystem UUID's. > > ATA8 at the moment looks set to add a true "MAC" or "WWN" type identifier > to each device.. Right now model/serial is not always unique. True, but most manufacturers try to make the serial number unique for their own reasons (like warrantee service), and you can have manufacturing errors with MAC assignment just as easily as you can with serial numbers. I still remember when SGI shipped MIT 20 SGI Indy pizza boxes that all had the same MAC addresses (that we knew about --- we found out because all 20 were installed on the same subnet). That was a mildly entertaining bug to track down.... especially since IIRC, Irix at the time didn't print warning messages when someone else with a different IP addresses responded to your MAC address. - Ted - To unsubscribe from this list: 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
