[Xen-devel] Xen and SCSI

[Jeff Garzik <jeff@xxxxxxxxxx>]

FWIW, I'm about to complete a domU scsi driver for Xen (initiator, aka 
front-end).  Additionally, I'm writing "the other side", the associated 
target (tunnel, aka back-end) for dom0-style kernels.
I was planning on sending it to linux-scsi for review this week, then 
figure out the best path to get it upstream.
The basic message protocol draws heavily on native SCSI RPC model, and 
by that, I mean SAM and "SMP-ish".  This allows communication with any 
number of SCSI targets/LUNs/etc. between any domU or dom0.
Reading your email earlier today, I would recommend against using the 
SCSI generic driver, unless you're doing something strange like passing 
everything through userspace.  Just put SCSI commands on the request 
queue...
        Jeff



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