From owner-freebsd-xen@freebsd.org Fri Jan 20 14:48:44 2017 Return-Path: Delivered-To: freebsd-xen@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 02957CB8D86; Fri, 20 Jan 2017 14:48:44 +0000 (UTC) (envelope-from fbstable@cps-intl.org) Received: from mail3r.parlicentre.org (mail3r.parlicentre.org [199.48.129.20]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id D339210CF; Fri, 20 Jan 2017 14:48:43 +0000 (UTC) (envelope-from fbstable@cps-intl.org) To: "freebsd-stable@freebsd.org" , freebsd-xen@freebsd.org, freebsd-virtualization@freebsd.org From: SK Message-ID: <7c06aea6-0b10-e9c0-d750-f42d4a406258@cps-intl.org> Date: Fri, 20 Jan 2017 14:26:18 +0000 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-SA-Exim-Mail-From: fbstable@cps-intl.org X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on mail3r.parlicentre.org X-Spam-Level: X-Spam-Status: No, score=-6.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, RP_MATCHES_RCVD,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.1 Subject: FreeBSD 11 Stable on a Xen :: bridge0 crashing server X-SA-Exim-Version: 4.2 X-SA-Exim-Scanned: Yes (on mail3r.parlicentre.org) X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.23 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: Fri, 20 Jan 2017 14:48:44 -0000 Dear List members Apologies for cross posting to two other lists -- was not sure which one is more appropriate for this, as it may be related to stable, xen or virtualization. Here is the situation: I have a VPS server from a well reputed provider (and they deserve the reputation), running FreeBSD 11 stable x64 under Xen Full Virtualization (HVM). I have the xn0 interface which is working fine. I intend to use VIMAGE, so I compiled the kernel, added cloned_interface="bridge0" and restarted the server. But as soon as I am attaching the xn0 to bridge0, the kernel is panicking and the server restarting. The provider confirmed that they found similar behaviour on a freshly installed/provisioned FreeBSD 11 x64 system. Further to that, the provider ran some tests, and what they are telling me is if they install/provision FreeBSD 10 x64, there is no problem with attaching bridge0 to xn0. Then they updated/upgraded that box to FreeBSD 11 x64, and that too worked when they attached bridge0 to xn0. However, they are yet to come back with my request to build a custom kernel with options VIMAGE and try it out. In the meanwhile, I took a crash dump and followed the FreeBSD handbook (not that it gave me much idea, I'm not a programmer nor am at that level of skillsets). The dump/debug is available at http://pastebin.com/XuWvJHUZ for anyone who is interested. Just wondering how to go about it. I do need to have bridge0 with xn0 and all the epairs I'm going to use for my jails. Any suggestion/pointer/test-instruction is highly appreciated. Best regards SK