From owner-freebsd-xen@FreeBSD.ORG Thu Jul 21 17:15:19 2011 Return-Path: Delivered-To: freebsd-xen@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id ED801106566C for ; Thu, 21 Jul 2011 17:15:19 +0000 (UTC) (envelope-from scott@bqinternet.com) Received: from mail.bqinternet.com (mail.bqinternet.com [69.9.32.203]) by mx1.freebsd.org (Postfix) with ESMTP id C11288FC17 for ; Thu, 21 Jul 2011 17:15:19 +0000 (UTC) Received: from localhost (mail [69.9.32.203]) by mail.bqinternet.com (Postfix) with ESMTP id 564E584021C for ; Thu, 21 Jul 2011 17:15:25 +0000 (GMT) Received: from mail.bqinternet.com ([69.9.32.203]) by localhost (mail.bqinternet.com [69.9.32.203]) (amavisd-new, port 10024) with ESMTP id nmBc2t+l123O for ; Thu, 21 Jul 2011 17:15:25 +0000 (GMT) Received: from [192.168.23.125] (mail [69.9.32.203]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.bqinternet.com (Postfix) with ESMTP id C5EDB84019F for ; Thu, 21 Jul 2011 17:15:24 +0000 (GMT) Message-ID: <4E285EA3.2070104@bqinternet.com> Date: Thu, 21 Jul 2011 13:15:15 -0400 From: Scott Burns User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.18) Gecko/20110616 Thunderbird/3.1.11 MIME-Version: 1.0 To: freebsd-xen@freebsd.org References: <4E275BC1.9040508@bqinternet.com> <4E27A048.1070405@freebsd.org> In-Reply-To: <4E27A048.1070405@freebsd.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: Xen save/resume with XENHVM kernel X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion of the freebsd port to xen - implementation and usage List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Jul 2011 17:15:20 -0000 On 7/20/11 11:43 PM, Colin Percival wrote: > On 07/20/11 15:50, Scott Burns wrote: >> I see in sys/dev/xen/blkfront/blkfront.c that the blkfront_resume() >> function is not implemented, and there are also some notes about it in >> blkif_recover(). Is anyone currently working on this? Is there a hack >> I could use to get live migration working, even if it's not under ideal >> conditions? > > I'm not aware of any ongoing work on this. Most of the places where FreeBSD is > being used with Xen don't use live migration. I use live migration so that I can upgrade hardware or do maintenance without needing to shut down VMs. Xen + DRBD makes for a nice little cloud setup. -- Scott Burns System Administrator BQ Internet Corporation