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RE: [Xen-users] Release 0.9.6 of GPL PV Drivers for Windows

To: <Dustin.Henning@xxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Release 0.9.6 of GPL PV Drivers for Windows
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Tue, 3 Jun 2008 11:19:02 +1000
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Thread-topic: [Xen-users] Release 0.9.6 of GPL PV Drivers for Windows
> James,
>       I saw some discussion about xenscsi/pvscsi in last month's
archives
> (I wasn't a member yet, so I don't have the e-mails to respond to).  I
> haven't seen anything on the newer version the author was talking
about
> posting, so I am wondering if it might have been posted to some other
list
> where you are be a member.  Also, I am curious as to whether or not it
> might
> benefit me.  I have four Windows domUs, each has its own SATA HD, so I
> think
> I could use those drivers (alongside the GPL PV ones for everything
else).

If you load the 'sg' module under linux, you'll get a /dev/sgX entry for
each scsi device (sd, st, etc) which is used to be able to send raw scsi
commands to devices.

If you wanted to pass raw disks to domains then pvscsi could do that,
but I can't speak from a performance point of view as I haven't tried
it. There could be less overheads involved... You also wouldn't be able
to boot from them as I don't believe that the HVM bios can boot from raw
scsi disks.

Jun posted the latest pvscsi patches to the xen-devel list on Friday
30th, you should be able to find them in the mailing list archives.

James

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