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[Xen-devel] Xen and SCSI

To: Randy Thelen <rthelen@xxxxxxxxxx>
Subject: [Xen-devel] Xen and SCSI
From: Jeff Garzik <jeff@xxxxxxxxxx>
Date: Tue, 20 Jun 2006 17:34:43 -0400
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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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