From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1GmPox-0006Jj-9I for user-mode-linux-devel@lists.sourceforge.net; Mon, 20 Nov 2006 23:13:31 -0800 Received: from smtp003.mail.ukl.yahoo.com ([217.12.11.34]) by mail.sourceforge.net with smtp (Exim 4.44) id 1GmPou-0008NP-FW for user-mode-linux-devel@lists.sourceforge.net; Mon, 20 Nov 2006 23:13:31 -0800 From: Blaisorblade Date: Tue, 21 Nov 2006 08:13:14 +0100 References: <22a33e9f0611180345w7ec64513l34424a59e1671479@mail.gmail.com> In-Reply-To: <22a33e9f0611180345w7ec64513l34424a59e1671479@mail.gmail.com> MIME-Version: 1.0 Content-Disposition: inline Message-Id: <200611210813.14745.blaisorblade@yahoo.it> Subject: Re: [uml-devel] Problem with newer (>2.6.14) UML kernels hanging under Xen DomU/Centos 4.4 List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: user-mode-linux-devel-bounces@lists.sourceforge.net Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net To: user-mode-linux-devel@lists.sourceforge.net On Saturday 18 November 2006 12:45, Matt Willsher wrote: > I've been trying to get UML running under a Xen DomU running Centos > 4.4, which I understand is a reasonable thing to do. > > When I started out I was using a download 2.6.12 kernel and the image > booted up fine. I then tried 2.6.18.2, which is hanging after VFS: > Mounted root (ext3 filesystem) readonly. I've had someone check my > kernel and the image on another machine and it works without problem. > I've tried some other kernels, and 2.6.14 seemed ok, 2.6.16 wasn't. > > I've had some problems with TLS under Xen running Berkely DB, so have > rebuilt glibc with native threading disabled, but /lib/tls is still > there because Bdb complains if it's removed. > > Below I've give the process list at the time, backtraces of each of > these processes and the output of the ./linux ubd0=root_fs_router > command. Let me know if more output is required > > Any help is very much appreciated. I have two suggestions for you to try: * reduce CONFIG_HOST_VM_SPLIT for UML guest kernels (Xen consumes part of the available memory for UML, which causes crashes) * try if booting with mode=tt helps - around 2.6.14 or 2.6.15 skas0 support was introduced (a very big change!) and become the new default, so that's the 1st likely culprit. -- Inform me of my mistakes, so I can add them to my list! Paolo Giarrusso, aka Blaisorblade http://www.user-mode-linux.org/~blaisorblade Chiacchiera con i tuoi amici in tempo reale! http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel