From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755094Ab0GEL6d (ORCPT ); Mon, 5 Jul 2010 07:58:33 -0400 Received: from smtp.eu.citrix.com ([62.200.22.115]:29645 "EHLO SMTP.EU.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751394Ab0GEL6b (ORCPT ); Mon, 5 Jul 2010 07:58:31 -0400 X-IronPort-AV: E=Sophos;i="4.53,539,1272844800"; d="scan'208";a="740278" Date: Mon, 5 Jul 2010 12:58:52 +0100 From: Stefano Stabellini X-X-Sender: sstabellini@kaball-desktop To: Don Dutile CC: "stefano@stabellini.net" , "linux-kernel@vger.kernel.org" , "xen-devel@lists.xensource.com" , Stefano Stabellini , "sheng@linux.intel.com" , "jeremy@goop.org" Subject: Re: [PATCH 12/13] Unplug emulated disks and nics In-Reply-To: <4C2CEF56.4050008@redhat.com> Message-ID: References: <1277136847-13266-12-git-send-email-stefano@stabellini.net> <4C2CEF56.4050008@redhat.com> User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 1 Jul 2010, Don Dutile wrote: > The problem with this check/enable is that if you run > this on an older qemu-xen that doesn't have unplug support, > it fails pv-hvm configuration. > > But, all that means is that you can't use an xvd as the boot device, > and you have to use an emulated IDE device as boot device. > There are a couple ways to configure the vnif correctly (in guest > or in xen guest config file). > > So, on an older (say, rhel5) xen, I don't have this check; > the boot device is required to be spec'd as hda, not vda, and > xen-blkfront is not allowed to configure blk major nums > for IDE (& SCSI) (to avoid 2 drivers twiddling w/same phys backend... not good!). > Who is requiring that the boot device is spec'd as hda and not xvda? I don't think there is such limitation in xend or libxl at the moment.