WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

RE: [Xen-devel] SCSI passthrough using /dev/sgX

To: "Tomonari Horikoshi" <t.horikoshi@xxxxxxxxxxxxxx>, "Mark Williamson" <mark.williamson@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] SCSI passthrough using /dev/sgX
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Tue, 4 Dec 2007 13:42:38 +1100
Delivery-date: Mon, 03 Dec 2007 18:43:19 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <AEC8361E723959t.horikoshi@xxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <AEC6C66638C05B468B556EA548C1A77D0131A277@trantor> <AEC6C66638C05B468B556EA548C1A77D0131A328@trantor> <200712040212.23030.mark.williamson@xxxxxxxxxxxx> <AEC8361E723959t.horikoshi@xxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: Acg2Hp1+0rkw1pL1SdKvcMOhvOStqwAAF1ww
Thread-topic: [Xen-devel] SCSI passthrough using /dev/sgX
> We are not developing SCSI of Windows.
> We have no plan to depvelop Windows SCSI pass-through currently.
> 
> Our SCSI pass-through doesn't use SCSI Generic.

Are you planning on allowing the export of only a single device, eg if
the SCSI bus was like this:

#0 - SCSI Disk
#1 - SCSI Disk
#5 - SCSI CDROM
#6 - SCSI Tape
#7 - SCSI HBA

Could I export #5 to one domain, #6 to another domain, and use #0 and #1
in Dom0? Maybe your code already can do this?

> Does using SCSI Generic in backend mean user-space access ?

/dev/sgX is the SCSI Generic interface, and it is available in
userspace.

Thanks

James

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