James Bottomley wrote:
On Mon, 2006-09-11 at 10:34 -0400, Jeff Garzik wrote:
A long-term, low priority project of mine is to increasingly isolate
HCIL addressing, making it easier to directly support FC/SAS-style
addressing without hacks and HCIL emulation.
I'm not sure we want to embed an actual struct scsi_lun into the whole
of the scsi subsystem. At the moment, given that no-one's actually
managed to find any device that goes beyond two levels, the current u32
for lun is perfectly fine. If we're eventually forced beyond two
levels, we can consider the transition (although going to u64 does look
tempting).
A pretty print for the current u32 would be very useful though for
transports dealing with non single level luns (or address methods other
than zero).
A better subject line would have been "HCIL isolation" I suppose. I
would like to see increased usage of the accessors already present in
include/scsi/scsi_device.h, which would ease the transition from
hardcoded HCIL struct members to a more flexible addressing method.
Though, FWIW, for LUNs I would certainly like to see u64 rather than
u32.....
Jeff
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