From owner-freebsd-xen@freebsd.org Tue Nov 10 09:35:07 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 23836A2B08E for ; Tue, 10 Nov 2015 09:35:07 +0000 (UTC) (envelope-from mike@reifenberger.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 0779B199C for ; Tue, 10 Nov 2015 09:35:07 +0000 (UTC) (envelope-from mike@reifenberger.com) Received: by mailman.ysv.freebsd.org (Postfix) id 069A0A2B08D; Tue, 10 Nov 2015 09:35:07 +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 062B5A2B08B for ; Tue, 10 Nov 2015 09:35:07 +0000 (UTC) (envelope-from mike@reifenberger.com) Received: from mail.eeeit.de (mail.eeeit.de [37.120.160.187]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id BE54F199B for ; Tue, 10 Nov 2015 09:35:06 +0000 (UTC) (envelope-from mike@reifenberger.com) Received: from localhost (localhost [127.0.0.1]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: mike@reifenberger.com) by mail.eeeit.de (Postfix) with ESMTPSA id 43F9C3265; Tue, 10 Nov 2015 10:34:58 +0100 (CET) Received: from ppp-93-104-7-181.dynamic.mnet-online.de (ppp-93-104-7-181.dynamic.mnet-online.de [93.104.7.181]) by mail.eeeit.de (Horde Framework) with HTTP; Tue, 10 Nov 2015 10:34:58 +0100 Date: Tue, 10 Nov 2015 10:34:58 +0100 Message-ID: <20151110103458.Horde.H363qPg0Pt7dxArnT4Xwun9@mail.eeeit.de> From: Michael Reifenberger To: Roger Pau =?utf-8?b?TW9ubsOp?= Cc: xen@freebsd.org Subject: Re: Current shortcomings (XEN dom0 & FreeBSD) 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> <563CBFA7.30502@citrix.com> In-Reply-To: <563CBFA7.30502@citrix.com> User-Agent: Horde Application Framework 5 Content-Type: text/plain; charset=utf-8; format=flowed; DelSp=Yes MIME-Version: 1.0 Content-Disposition: inline Content-Transfer-Encoding: 8bit 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: Tue, 10 Nov 2015 09:35:07 -0000 Zitat von Roger Pau Monné : > 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. > How big are the diffs to the original version? Have you asked upstream already if the Patches would be accepted? >> - 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? > Yes, as it seems. They are HVM for first installation and PV afterwards. BTW: How can one specify pv disks to a HVM guest (Some guests get more than 4 disks)? Something like the following is not accepted: ... disk= [ '/dev/zvol/zdata/VM/cnt_nw1/root,raw,hda,w', '/dev/zvol/zdata/VM/cnt_nw1/swap,raw,xvdb,w', '/dev/zvol/zdata/VM/cnt_nw1/sapmnt,raw,xvdc,w', '/VM/ISO/CentOS-7-x86_64-Minimal-1503-01.iso,raw,hdc:cdrom,r' ... > I usually use Debian guests when I have to test Linux and have never > experienced this. > SUSE SLES11SP2 also seems not affected. >> - 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. > Since bapt@ stepped down from maintaining the xen ports: Has someone already tried to use xen 4.6 kernel and tools? Thanks! Greetings --- Michael Gruß --- Michael Reifenberger