From owner-freebsd-xen@freebsd.org Mon Jul 25 13:59:28 2016 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 4DF4DBA4561 for ; Mon, 25 Jul 2016 13:59:28 +0000 (UTC) (envelope-from kpielorz_lst@tdx.co.uk) Received: from smtp.krpservers.com (smtp.krpservers.com [62.13.128.145]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.krpservers.com", Issuer "RapidSSL SHA256 CA - G3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id EB81B12C2 for ; Mon, 25 Jul 2016 13:59:27 +0000 (UTC) (envelope-from kpielorz_lst@tdx.co.uk) Received: from [10.12.30.106] (vpn01-01.tdx.co.uk [62.13.130.213] (may be forged)) (authenticated bits=0) by smtp.krpservers.com (8.15.2/8.15.2) with ESMTPSA id u6PDxBAO026115 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 25 Jul 2016 14:59:12 +0100 (BST) (envelope-from kpielorz_lst@tdx.co.uk) Date: Mon, 25 Jul 2016 14:59:02 +0100 From: Karl Pielorz To: =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= , "Hoyer-Reuther, Christian" cc: freebsd-xen@freebsd.org Subject: Re: 'Live' Migrate messes up NTP on FreeBSD domU - any suggestions? Message-ID: In-Reply-To: <20160722115542.dopzb63dgkilqall@mac> References: <41E487BC91654544B2B8F31096F2D9D4D1514D1D8E@ex1> <20160714103016.4hgfzsjgkkgtkkgg@mac> <41E487BC91654544B2B8F31096F2D9D4D1514D1E88@ex1> <20160720093111.mpmp27wol7j3ge3d@mac> <41E487BC91654544B2B8F31096F2D9D4D1516490E9@ex1> <20160722115542.dopzb63dgkilqall@mac> X-Mailer: Mulberry/4.0.8 (Win32) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.22 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: Mon, 25 Jul 2016 13:59:28 -0000 --On 22 July 2016 13:55 +0200 Roger Pau Monn=C3=A9 = wrote: > In my environment I've migrated a FreeBSD VM with 2 cpus for > 100 > consecutive times without seeing any issues (or freezes), although this > was with OSS Xen and without xe-guest-utilities. Karl, have you tested > HEAD recently? Ok, I have tested this with r303286 - it seems to work OK. The hosts gain=20 no time that I can see while migrating, and NTP stays happy. I did get a panic after about 40 migrations - but that seems to be some=20 network issue or something... ('panic called with 0 available queues / dbt_trace_self_wrapper / vpanic = / kassert_panic / xn_txq_mq_start / ether_output / udp_send / sosend_dgram=20 / kern_sendit / sendit / sys_sendto / amd64_syscall / Xfast_syscall) I don't have a crashdump (failed). I did get a backtrace, for what it's=20 worth. I'm running the test again now (in case it panics again - I'll try harder=20 to get a dump just in case). -Karl