From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: XFS causes Kernel trace with Jeremy's pv_ops kernel Date: Thu, 07 Oct 2010 14:53:02 -0700 Message-ID: <4CAE413E.4050704@goop.org> References: <4CAD9D97.5070800@hosteurope.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <4CAD9D97.5070800@hosteurope.de> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Ulf Kreutzberg Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On 10/07/2010 03:14 AM, Ulf Kreutzberg wrote: > Hi Jeremy, > hi all, > > > I have checked out Jeremy's last git built of dom0 pv_ops kernel 2.6.32= .23: > > commit 41a85de5caef68bbd58e11ed7b781b7867d96eaa > Merge: 62bf426... 0ee0f94... > Author: Jeremy Fitzhardinge > Date: Tue Sep 28 11:20:40 2010 -0700 > > I have set up on a Dell PE1950 2xDualXeon 5130 an LVM2 partition > containing XFS. I have built Jeremy's kernel successfully, so the > running dom0 Kernel is the one mentioned above. > System is Debian-Lenny, Xen and Xen-tools are self-built. > > If I make some I/O, eg: > cd linux-2.6-xen-git (which is then on the lv with the XFS filesystem) > make -j 7 ; make install; make -j 7 modules; make modules_install > > in dmesg appears a kernel trace after a while. But compiling continues > and all keeps up and running. This only happens if the kernel is runnin= g > under xen 4.0.2-rc1-pre hypervisor. Nothing strange happens if I run it > on bare-metal (same machine) without hypervisor. > I have not tested bonnie or iozone yet. > > I have attached booting output of xen 4.0.2-rc1-pre > as well as the trace (file console-kerneltrace.txt). > Kernel config is also attached (config-2.6.32.23.txt) This doesn't look obviously Xen specific. At least at one point XFS was prone to spurious lockdep warnings that were hard to eliminate. I wonder if its possible you're seeing this under Xen because of some kind of timing issue? Of course it could be Xen related too, but as I said, nothing stands out. J > Perhaps you can help. Please let me know if I have forgotten any > important information. > > Many thanks and best regards, > Ulf Kreutzberg > > > Viele Gr=FC=DFe, > Ulf > > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel