[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] Xen and SCSI



Hi Jeff,

Jeff Garzik wrote:
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.

Neat! Is it a standard XenBus device? Does it use the existing blkfront/blkback ring queue? Do you have a sneak peak of the code you could possible point us to?

REgards,

Anthony Liguori

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



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.