From owner-freebsd-xen@freebsd.org Fri Nov 6 14:56:45 2015 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 38CD4A28DDA for ; Fri, 6 Nov 2015 14:56:45 +0000 (UTC) (envelope-from prvs=7454c2131=roger.pau@citrix.com) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 20CA61136 for ; Fri, 6 Nov 2015 14:56:45 +0000 (UTC) (envelope-from prvs=7454c2131=roger.pau@citrix.com) Received: by mailman.ysv.freebsd.org (Postfix) id 207B8A28DD9; Fri, 6 Nov 2015 14:56:45 +0000 (UTC) Delivered-To: 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 20197A28DD8 for ; Fri, 6 Nov 2015 14:56:45 +0000 (UTC) (envelope-from prvs=7454c2131=roger.pau@citrix.com) Received: from SMTP02.CITRIX.COM (smtp02.citrix.com [66.165.176.63]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "mail.citrix.com", Issuer "Verizon Public SureServer CA G14-SHA2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id CA5BA1135 for ; Fri, 6 Nov 2015 14:56:44 +0000 (UTC) (envelope-from prvs=7454c2131=roger.pau@citrix.com) X-IronPort-AV: E=Sophos;i="5.20,252,1444694400"; d="scan'208";a="316195242" Subject: Re: Current shortcomings (XEN dom0 & FreeBSD) To: Michael Reifenberger References: <20150918194154.Horde.PQcchwucJFPQY4U0K75MgpW@mail.eeeit.de> <56027D61.70207@citrix.com> <20150923163642.Horde.C2gq8tfwkC45mOK8NwCIAj-@mail.eeeit.de> <5602BD02.7050004@citrix.com> <20151106132308.Horde.wqlInItwP9c68Ih_23aoBbQ@mail.eeeit.de> CC: From: =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= X-Enigmail-Draft-Status: N1110 Message-ID: <563CBFA7.30502@citrix.com> Date: Fri, 6 Nov 2015 15:56:39 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: <20151106132308.Horde.wqlInItwP9c68Ih_23aoBbQ@mail.eeeit.de> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-DLP: MIA2 X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.20 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, 06 Nov 2015 14:56:45 -0000 Hello, El 06/11/15 a les 13.23, Michael Reifenberger ha escrit: > Hi, > before analyzing deeper I just wanted to ask if the following symptoms > are already known: > > - Often / Mostly the FreeBSD dom0 hangs without further output during > poweroff (reboot works though) Yes, I'm aware of this issue, unfortunately the way to solve it it's not clear. In order to do a proper power off when running as Dom0 we would have to modify ACPICA code, which is a separate upstream project that's used by a bunch of different OSes. Linux does it this way, but then they have to keep all this local modifications on top of upstream ACPICA, which increases the maintainership burden. > - The same happens mostly for the Centos7 guests I'm currently testing. Do you mean that CentOS 7 guests do not poweroff properly? Are those PV or HVM guests? I usually use Debian guests when I have to test Linux and have never experienced this. > - Sometimes (usually after some uptime and/or many guest reboots) the > blockback > (ZFS Zvols in my case) seems to get wedged (guest hang during startup)... Yes, I've also experienced this once or twice. The problem is that the blkback error path can get deadlocked depending on the situation. I have to look into cleaning it when I have some time. > Besides that the whole system is quite usable (For Windows, SUSE and > Centos guests)! Thanks for the testing and the list of issues! Roger.