From owner-freebsd-xen@freebsd.org Thu Mar 3 09:08:18 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 8B61EA936A1 for ; Thu, 3 Mar 2016 09:08:18 +0000 (UTC) (envelope-from gustau.perez@gmail.com) Received: from mail-wm0-x22f.google.com (mail-wm0-x22f.google.com [IPv6:2a00:1450:400c:c09::22f]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 1CF97EF1 for ; Thu, 3 Mar 2016 09:08:18 +0000 (UTC) (envelope-from gustau.perez@gmail.com) Received: by mail-wm0-x22f.google.com with SMTP id l68so24914053wml.0 for ; Thu, 03 Mar 2016 01:08:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-transfer-encoding; bh=mXgXujwHkHXDuFiM9SZt/OnfBcw1G+Ydwvi4uIkM2jA=; b=wHuRL/fgZp9cMdGLus1yum5TZEeYkI/Z21N/Jrtg7Kl5lOK1NAtww+QsqbmHO/MVgz 1TDttTmXSrO4DTwmSR3To5oeCr2Es0UU/NIPLhAYj9UL+wDefUuU+UMj7A1JBl4w4DlE iyJMHYB6UYKM8hbhfRiUOjBCEjC7utxdmGMxspUkvvu7FgsEw1yBhL9pULRh7feDDbj4 BvZhyN8LZVqqDW2q4NmtK9+mWEveIcrxKcUTwJ7lHV/18Sit3tbqkIiCIbP9nOjVKZvQ AVO+77S5uByk2q32XE17ak7S98HdGPQWsndfGXyAx+44NRFQ9R95Pb1EPN9xOtWjTbNV 9f8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=mXgXujwHkHXDuFiM9SZt/OnfBcw1G+Ydwvi4uIkM2jA=; b=D7fgrnBxS6sJVHs1s55gZx3mPqlshIpnvydB2O0JtVE9+tF+CUbuxJiE08Y31WteB2 AQBxZjyXKxVEacnRvXmrEaJeBr7CJR+4o/p7XbGc2BSgVjzEBGwcuHviBcMbHPr3mLbf pGC0Ch+qVDgl+xXIHUa07E6pmqF4K2EUN9lndocys4C6MICTXd15bWYQFTZBd7OthEQM Z0eHR1QnLp2d+EQkrs1dykYOtliXXOvcJ3CG1xbQ7ZlbUQawV2ARibJtrB6yi7VNZwi8 brGyCLjFle8gsU6yFGZ58MpQdJ22a6KeoorA24KhTDgNJ/zCnPso22vTrf7VElePVWR8 OmtA== X-Gm-Message-State: AD7BkJIdJQ89wBDeIdDkN71mc5/9l8QJwqBHJABdKu6/p2gbWab/N9T2yAPiIuo+fla9Tg== X-Received: by 10.194.58.47 with SMTP id n15mr1686774wjq.155.1456996096606; Thu, 03 Mar 2016 01:08:16 -0800 (PST) Received: from [10.0.2.151] ([147.83.40.10]) by smtp.googlemail.com with ESMTPSA id cb2sm39867281wjc.16.2016.03.03.01.08.14 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 03 Mar 2016 01:08:15 -0800 (PST) Subject: Re: Porting the block-iscsi hotplug script To: =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= , FreeBSD XEN References: <553DEB97.5000300@entel.upc.edu> <5541FC8A.8080009@citrix.com> <5542365D.10403@entel.upc.edu> <55423ECD.6000404@citrix.com> <5556F21D.2050005@entel.upc.edu> <555EEFBA.5080902@citrix.com> <555EF542.3090002@citrix.com> <555F9B3F.1000600@entel.upc.edu> <55602512.1090702@citrix.com> <56C6FA2F.8040900@gmail.com> <56CAC8CB.8030107@gmail.com> <56CADEDA.4050007@citrix.com> <56CB0057.1060509@gmail.com> <56CB041E.1020009@citrix.com> <56CB2D90.5080809@gmail.com> <56CB34BA.6060809@citrix.com> <56CC24BD.6050609@gmail.com> <56CC32E5.5010101@citrix.com> <56CC7637.3080408@gmail.com> <56CF5668.6090605@citrix.com> <56D0091F.80408@gmail.com> <56D02863.7040100@citrix.com> <56D03D95.9090509@gmail.com> <56D04E5F.8070901@citrix.com> <56D42A28.8050701@gmail.com> <56D434FC.8030905@citrix.com> <56D57110.2060406@gmail.com> <56D587D8.6030702@citrix.com> <56D590EA.609@gmail.com> <56D591BA.4020303@gmail.com> <56D5929F.7040001@citrix.com> <56D5C722.3080205@gmail.com> <56D6B68D.8080809@citrix.com> From: =?UTF-8?Q?Gustau_P=c3=a9rez?= X-Enigmail-Draft-Status: N1110 Message-ID: <56D7FEFE.9050000@gmail.com> Date: Thu, 3 Mar 2016 10:08:14 +0100 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: <56D6B68D.8080809@citrix.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.21 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: Thu, 03 Mar 2016 09:08:18 -0000 El 2/03/16 a les 10:46, Roger Pau Monné ha escrit: > > There's a little shortcut in libxl to deal with disks that are using the > default hotplug script, see: > > http://xenbits.xen.org/gitweb/?p=xen.git;a=blob;f=tools/libxl/libxl.c;h=4cdc1690c4d5e5d5b66c896e4c11e813be92b468;hb=HEAD#l2451 > > libxl does the hotplug script job and already writes the xenstore > "physical-device" node on behalf of the hotplug script. This is done to > speed up domain creation. > > You can disable this shortcut by spelling out the hotplug script on each > disks configuration line. Using the configuration file you posted in [2] > as an example, you will need to change your disk configuration lines so > they look like: > > disk = [ > 'vdev=xvda,access=rw,script=block,target=/dev/zvol/dades/debian', > 'vdev=xvdb,access=rw,script=block,target=/dev/zvol/dades/debian_1', > ] > > This will prevent libxl from writing the "physical-device" node. Thank you. That makes it. I'm using a simpler form like: phy:/dev/zvol/dades/debian,xvda,rw,script=block', which behaves in the same way. > >> On the other hand, if I attach two disks[2], the xenstored again >> complains about one of the disks already declared in the xenstore. >> However the store seem to be fine [3]. If I remove that disk from the >> definition the domain boots just fine. > According to [2], you are assigning the same vdev to both disks (xvda). > This is not possible, you should change the second disk definition to: > > 'phy:/dev/zvol/dades/debian_1,xvdb,rw' > > Or any other xvd* value that's not xvda. Ah, you're right. Cut and paste betrayed me :) However perhaps the error message may be misleading (it made me think the error was the volume, no the given virtual disk). > http://www.informit.com/articles/article.aspx?p=1160234 Very interesting. I'd need some time to read it through. I'm checking the libxl code and I'd like to pass more arguments to the script. I'll modify libxl/libxl_freebsd.c to do so. I'll let you know my experiments. Thank you, Gustau