From owner-freebsd-xen@FreeBSD.ORG Wed Dec 26 00:17:02 2012 Return-Path: Delivered-To: freebsd-xen@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 2D13C8EB for ; Wed, 26 Dec 2012 00:17:02 +0000 (UTC) (envelope-from jwest@ezwind.net) Received: from ezwind.net (bobby.ezwind.net [209.145.140.14]) by mx1.freebsd.org (Postfix) with ESMTP id D461A8FC13 for ; Wed, 26 Dec 2012 00:17:01 +0000 (UTC) Received: from LENOVOD6B52A6B by ezwind.net (MDaemon.PRO.v8.1.3.R) with ESMTP id 48-md50000140551.msg for ; Tue, 25 Dec 2012 18:16:04 -0600 From: "Jay West" To: "'Mark Felder'" References: <000301cddfa8$b6af8b70$240ea250$@ezwind.net> <20121222012933.5694d482@tech304> In-Reply-To: <20121222012933.5694d482@tech304> Subject: RE: 9.1R? Date: Tue, 25 Dec 2012 18:16:03 -0600 Message-ID: <001201cde2fe$3113bc80$933b3580$@ezwind.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQDDwiTSYMbgkcl4ObZ3lS8RUuUUGAJpdmfCmism8nA= Content-Language: en-us X-Authenticated-Sender: jwest@ezwind.net X-Spam-Processed: gateway.ezwind.net, Tue, 25 Dec 2012 18:16:04 -0600 (not processed: message from valid local sender) X-MDRemoteIP: 71.14.76.0 X-Return-Path: jwest@ezwind.net X-MDaemon-Deliver-To: freebsd-xen@freebsd.org X-MDAV-Processed: gateway.ezwind.net, Tue, 25 Dec 2012 18:16:05 -0600 Cc: freebsd-xen@freebsd.org X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.14 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: Wed, 26 Dec 2012 00:17:02 -0000 >Also, if you aren't aware, here is my personal list of Xen bugs: - Shutdown via Xen fails to poweroff. It doesn't issue any normal shutdown commands, but tells the Xen code in the kernel to start a shutdown. It's broken on the kernel side. kern/171118 Also, NetBSD's workaround for this is to enable powerd, but we can't when we're running XENHVM and I suspect their powerd is a completely different beast. I can confirm this as a problem as well, on x86 64bit PVM. FreeBSD VM sits at "press any key to reboot". Soon as I press any key, then the VM shuts down. I don't recall why, but something made me think that FreeBSD was responding to a VM shutdown with 'shutdown -h now' when it should be responding with 'shutdown -p now", which seemed to work correctly. - If you use PF with Xen HVM your performance will suck. Known bug. kern/154428 Set net.inet.tcp.tso=0 as a workaround. We don't use PF under Xen, so can't comment. - "Deactivating" a network interface is an option after enabling the xe-guest-utilities scripts. Please don't do that. It seems to cause a panic every time. kern/171138 Also, this happens when you try to change the VLAN assigned to an interface. We have not tried this, good to know. Additional bugs.... I believe all mentioned here already.... 1) 64bit PVM won't mount filesystems, after install have to change fstab adpXpY references to adXpY (or something similar, don't have it in front of me). 2) 64bit PVM won't boot with a virtual CD/DVD drive attached, have to remove it from the command line. I know there's other bugs, but the above ones are pretty much show-stoppers for getting freebsd up under XenServer. Fortunately, there's workarounds. Best, Jay West