From owner-freebsd-xen@freebsd.org Fri Jul 29 14:58:31 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 6D41CBA78ED for ; Fri, 29 Jul 2016 14:58:31 +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" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 14D4A1C01 for ; Fri, 29 Jul 2016 14:58:30 +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 u6TEwGQX014598 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 29 Jul 2016 15:58:17 +0100 (BST) (envelope-from kpielorz_lst@tdx.co.uk) Date: Fri, 29 Jul 2016 15:57:55 +0100 From: Karl Pielorz To: =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= , Wei Liu cc: "Hoyer-Reuther, Christian" , freebsd-xen@freebsd.org Subject: Re: 'Live' Migrate messes up NTP on FreeBSD domU - any suggestions? Message-ID: In-Reply-To: <20160729082905.46js7o3zp6iwuibd@mac> References: <41E487BC91654544B2B8F31096F2D9D4D1514D1D8E@ex1> <20160714103016.4hgfzsjgkkgtkkgg@mac> <41E487BC91654544B2B8F31096F2D9D4D1514D1E88@ex1> <20160720093111.mpmp27wol7j3ge3d@mac> <41E487BC91654544B2B8F31096F2D9D4D1516490E9@ex1> <20160722115542.dopzb63dgkilqall@mac> <20160725144314.yhggviqhsqzgux2w@mac> <20160725153714.GW27082@citrix.com> <20160729082905.46js7o3zp6iwuibd@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: Fri, 29 Jul 2016 14:58:31 -0000 --On 29 July 2016 10:29 +0200 Roger Pau Monn=C3=A9 = wrote: > Hello Karl and Christian, I have the following patches that solve all the > issues I've seen with live migration, with those I've been able to > migrate a VM > 100 times without seeing any issues. Could you give them > a try? > > BTW, I haven't been able to reproduce Karl's crash ("called with 0 > available queues"), but I've added a condition that should prevent it > from triggering anyway. Patches are here: > > https://reviews.freebsd.org/D7349 > https://reviews.freebsd.org/D7362 > https://reviews.freebsd.org/D7363 > > It doesn't really matter in which order you apply them as long as both 3 > are applied. Ideally I would like to commit them on Monday, so that I > can MFC them to stable/11 before the releng/11 branch, could you please > provide some feedback before then? Patched, and have been running migrations back & forth between two pool=20 members all day (must have done ~100), time has stayed in sync - and I've=20 not experienced any panics. This is on the same VM as before - I've also tried leaving more heavy=20 network processes running in the background, and still seems Ok. Regards, -Karl