From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sander Eikelenboom Subject: Re: Re: 2.6.37-rc1 mainline domU - BUG: unable to handle kernel paging request Date: Sun, 14 Nov 2010 18:52:44 +0100 Message-ID: <148142194.20101114185244@eikelenboom.it> References: <834181.93454.qm@web56101.mail.re3.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <834181.93454.qm@web56101.mail.re3.yahoo.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Boris Derzhavets Cc: Jeremy Fitzhardinge , xen-devel@lists.xensource.com, Bruce Edge , Konrad Rzeszutek Wilk List-Id: xen-devel@lists.xenproject.org Ahh i see that patch contains the patches i mentioned already. Sunday, November 14, 2010, 6:47:25 PM, you wrote: > This is not exactly git8 . Michael Young applied attached patch on top of= git8. > It's=A0 his the most recent submission to fedora-xen. > http://koji.fedoraproject.org/koji/taskinfo?taskID=3D2598434=20 > Boris. > --- On Sun, 11/14/10, Sander Eikelenboom wrote: > From: Sander Eikelenboom > Subject: Re: [Xen-devel] Re: 2.6.37-rc1 mainline domU - BUG: unable to ha= ndle kernel paging request > To: "Boris Derzhavets" > Cc: "Konrad Rzeszutek Wilk" , xen-devel@lists.xen= source.com, "Bruce Edge" , "Jeremy Fitzhardinge" > Date: Sunday, November 14, 2010, 12:19 PM > Perhaps these patches (especially Stefano's) could make a difference ? > http://lkml.indiana.edu/hypermail/linux/kernel/1011.1/02348.html > I don't think these are applied to your domU kernel=A0 since it's git8, i= t worth the shot i guess... > -- > Sander > Sunday, November 14, 2010, 6:09:14 PM, you wrote: >>> Hmmm have you tried do do a lot of I/O with something else as NFS ? >> I've tried scp a lot from DomU to Dom0 on F14 no problems, on Ubuntu 10.= 04 Server >> DomU as NFS client cannot survive more then a 2-3 min with I/O generated= by scp. >> If i unmount NFS share everything goes fine ( Ubuntu 10.04) >>> That would perhaps pinpoint it to NFS doing something not completely co= mpatible with=20 >> Xen. >> If DomU ( Ubuntu 10.04 ) is running=A0 by 2.6.36 kernel there is no any = NFS or other network related problems . Issue is specific for 2.6.37-rc1 ke= rnel as kernel running DomU at Xen 4.0.1 Dom0 ( 2.6.32.25 pvops) on top of = Ubuntu Lucid Server. >> Boris. >> -- On Sun, 11/14/10, Sander Eikelenboom wrote: >> From: Sander Eikelenboom >> Subject: Re: [Xen-devel] Re: 2.6.37-rc1 mainline domU - BUG: unable to h= andle kernel paging request >> To: "Boris Derzhavets" >> Cc: "Konrad Rzeszutek Wilk" , xen-devel@lists.xe= nsource.com, "Bruce Edge" , "Jeremy Fitzhardinge" >> Date: Sunday, November 14, 2010, 11:56 AM >> Hmmm have you tried do do a lot of I/O with something else as NFS ? >> That would perhaps pinpoint it to NFS doing something not completely com= patible with Xen. >> I'm not using NFS (I still use file: based guests, and i use glusterfs (= fuse based userspace cluster fs) to share diskspace to domU's via ethernet). >> I tried NFS in the past, but had some troubles setting it up, and even m= ore problems with disconnects. >> I haven't seen any "unable to handle page request" problems with my mix = of guest kernels, which includes some 2.6.37-rc1 kernels. >> -- >> Sander >> Sunday, November 14, 2010, 5:37:59 PM, you wrote: >>> I've tested F14 DomU (kernel vmlinuz-2.6.37-0.1.rc1.git8.xendom0.fc14.x= 86_64) as NFS client and Xen 4.0.1 F14 Dom0 (kernel vmlinuz-2.6.32.25-172.x= endom0.fc14.x86_64) as NFS server . Copied 700 MB ISO images from NFS folde= r at Dom0 to DomU and scp'ed them back to Dom0. During about 30 - 40 min Do= mU ran pretty stable , regardless kernel crash as "unable to handle page re= quest" was reported once by F14 DomU, but it didn't actually crash DomU. Sa= me excersises with replacement F14 by Ubuntu 10.04 Server results DomU cras= h in about several minutes. Dom0's instances dual boot on same development = box ( Q9500,ASUS P5Q3,8GB) >>> Boris. >>> --- On Fri, 11/12/10, Konrad Rzeszutek Wilk wr= ote: >>> From: Konrad Rzeszutek Wilk >>> Subject: Re: [Xen-devel] Re: 2.6.37-rc1 mainline domU - BUG: unable to = handle kernel paging request >>> To: "Sander Eikelenboom" >>> Cc: "Boris Derzhavets" , xen-devel@lists.xensour= ce.com, "Bruce Edge" , "Jeremy Fitzhardinge" >>> Date: Friday, November 12, 2010, 12:01 PM >>> On Fri, Nov 12, 2010 at 05:27:43PM +0100, Sander Eikelenboom wrote: >>>> Hi Bruce, >>>>=20 >>>> Perhaps handpick some kernels before and after the pulls of the xen pa= tches (pv-on-hvm etc) to begin with ? >>>> When you let git choose, especially with rc-1 kernels, you will end up= with kernels in between patch series, resulting in panics. >>> Well, just the bare-bone boot of PV guests with nothing fancy ought to = work. >>> But that is the theory and .. >>>> > The git bisecting is slow going. I've never tried that before and I'= m a git >>>> > rookie. >>>> > I picked 2.6.36 - 2.6.37-rc1 as the bisect range and my first 2 bise= cts all >>>> > panic at boot so I'm obviously doing something wrong. >>>> > I'll RTFM a bit more and keep at it. >>> .. as Bruce experiences this is not the case. Hmm.. >>> _______________________________________________ >>> Xen-devel mailing list >>> Xen-devel@lists.xensource.com >>> http://lists.xensource.com/xen-devel >>>=A0 =A0 =A0=A0=A0 --=20 Best regards, Sander mailto:linux@eikelenboom.it