From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Tokarev Subject: Re: Unable to boot from SCSI disk Date: Tue, 28 May 2013 13:59:37 +0400 Message-ID: <51A48009.1040602@msgid.tls.msk.ru> References: <51A3C946.1040906@redhat.com> <51A3CF36.6030605@msgid.tls.msk.ru> <51A47112.5020904@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: Daniel Guillermo Bareiro , kvm@vger.kernel.org To: Paolo Bonzini Return-path: Received: from isrv.corpit.ru ([86.62.121.231]:52844 "EHLO isrv.corpit.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751193Ab3E1J7j (ORCPT ); Tue, 28 May 2013 05:59:39 -0400 In-Reply-To: <51A47112.5020904@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: 28.05.2013 12:55, Paolo Bonzini wrote: > Il 27/05/2013 23:25, Michael Tokarev ha scritto: [] >> but it is wheezy, which ships with seabios 1.7.0, which does not >> have scsi boot support. So in order to boot from scsi, you have >> to use old ,boot=on device property, which has been forward-ported >> from older qemu-kvm version to 1.1 version used on debian, because >> it was the only way at that time to boot from an scsi disk without >> resorting to using proprietary firmware. > > Why don't you forward port the SCSI boot patches? That'd be back-porting, not forward-porting. Anyway, in Debian we use a bit different approach usually. Namely, instead of backporting lots of stuff resulting in a BigMess(tm), we provide more recent upstream versions of the software but compiled for previous (stable) debian release. This mechanism is named "debian backports". The stable release itself does not receive any large feature updates. It receives bugfixes, but only important ones. Besides, this scsi stuff doesn't really matter much -- it helps in some very rare situations (for example, sometimes this way it's easier to migrate from vmware to qemu), but that's about it. So I don't consider doing backports especially for scsi. If the new version backported to debian _also_ fixes scsi issues, that's just a side-effect. Thanks, /mjt