Once upon a time, Rick Stevens <ricks@xxxxxxxx> said: > Back in the day, the SCSI controller was assigned ID 7 and typically > tape drives were given ID 4. Hard drives were usually 0, 1, 2, and 3. > IDs 5 and 6 were left for the user. Don't ask me why...I suppose they > figured no one would ever need more than four hard drives. Then again, While generally drives were given the low numbers (for boot order on PCs), most of the drives I saw had the same 3 jumpers to assign any ID (including 7 if you renumbered the SCSI card for any reason), the rotating switch, or the up/down push-buttons. There wasn't any actual reservation of the numbers for specific devices. IIRC I did see one external tape drive that could only be 5 or 6 though (just because of convention). > Then again, > Gates said we'd never need more than 640K of RAM. No, he didn't. > Older Linux kernels carried along the SCSI ID as the device name, No, Linux always assigned SCSI devices in order from the start (e.g. sda, sg0, sr0, st0). Assigning with the ID was always something controversial, because on one hand, it would have given fixed device names (when that was desired for the more "enterprise-level" SCSI, when IDE always used hda for primary master, hdb for primary slave, etc.), while on the other, there weren't enough device major/minor numbers (and that assignment style never handled multiple buses or HBAs) to actually do that. Other OSes did it different, but not Linux, and certainly not any Fedora version (as the OP said). I'm pretty sure the only way Fedora would have had st4 without st[0-3] would have been if there was a udev rule to rename it. -- Chris Adams <cmadams@xxxxxxxxxx> Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
