linux-kernel - [PATCH]: Expand Xen blkfront for

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Date:	Tue, 19 Aug 2008 08:59:51 +0200
From:	Chris Lalancette <clalance@...hat.com>
To:	Jens Axboe <jens.axboe@...cle.com>
CC:	Jeremy Fitzhardinge <jeremy@...p.org>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH]: Expand Xen blkfront for > 16 xvd

Until recently, the maximum number of xvd block devices you could attach to
a Xen domU was 16.  This limitation turned out to be problematic for some users,
so it was expanded to handle a much larger number of disks.  However, this
requires a couple of changes in the way that blkfront scans for disks.  This
functionality is already present in the Xen linux-2.6.18-xen.hg tree; the
attached patch adds this functionality to the mainline xen-blkfront
implementation.  I successfully tested it on a 2.6.25 tree.  I build tested it
on 2.6.27-rc3, but couldn't get that tree to boot due to some other bug.

Signed-off-by: Chris Lalancette <clalance@...hat.com>
Acked-by: Jeremy Fitzhardinge <jeremy@...p.org>

View attachment "lkml-blkfront-expand-xvd.patch" of type "text/x-patch" (3736 bytes)