Messages in this thread |  | | Date | Tue, 02 Jul 1996 01:40:39 +0200 | From | Alexandre Maret <> | Subject | Re: SCSI device numbering |
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Johnie Stafford wrote: > > >>>>> "ac" == Albert Cahalan <albert@ccs.neu.edu> writes: > > ac> No, it is sufficient for everything, including really weird > ac> SCSI adapters. Using nibble boundries (for nice hex output), > ac> dev_t can be split as follows: > > ac> Purpose Bits Normal Extreme > ac> controller 4 <= 1 2 > ac> bus 4 == 0 1 > ac> device 8 <= 2 4 > > What about wide SCSI? It does 16 devices.
sorry... that's 8 bits -> 256 devices. It should be enough for your ultra-giga-wide-SCSI ;-)
> ac> lun 8 == 0 3 > ac> partition 4 <= 3 4 > > What about an entry for the entire disk (eg. /dev/sda)? What about > logical partitions? If you include the entry for the entire disk, I > use 9 entries for my primary disk.
4**2 = 16 is enough for 15 partitions + the whole disk
> Johnie
PS : shouldn't this message go to linux-scsi instead ??
-- \\-----------------------------------------------------------\\ // Alexandre Maret -- Linux : The choice of a GNU generation // \\ amaret@infomaniak.ch -- http://www.infomaniak.ch/~amaret \\ //-----------------------------------------------------------//
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