I think I may be seeing the same problem on a set of supermicro server based on the same Intel E7520 "Lindenhurst" chipset as the 1850. I can run xen-2.0.3 from the Jan 24th tarball using kernel 2.6.10 on these systems without any problem but if I use the latest 2.0.5, testing or unstable tarballs with 2.6.11 the server hangs under IO load. It often happens when I tar/untar, cp, or mkfs. I am running Redhat EL 3 & 4. I don''t know if it''s relevant but it looks like there was a patch added in 2.6.11 specifically for this chipset. "Disable SW irqbalance/irqaffinity for E7520/E7320/E7525" David> -----Original Message----- > From: xen-users-bounces@lists.xensource.com > [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of michal > urbanski > Sent: Monday, May 09, 2005 2:50 PM > To: xen-users@lists.xensource.com > Subject: Re: [Xen-users] Problem with Dell Poweredge 1850 > > On Sun, May 08, 2005 at 06:43:59PM +0200, Arie Kraai wrote: > > On Sun, May 08, 2005 at 10:15:45AM -0400, Rob See wrote: > > > > > > Any time the system is placed under high IO ( for example > untar/bz2ing a > > > tarball to create the fs for a xenU partiton) the machine hangs. > > > > Is this problem really xen-related; can you do the same actions booted > > from a "native" kernel without a crash? > > It looks like a memory or heating problem... > > I can state for certain that it is a xen problem. I''ve shelved the xen > stuff on our 2850 for the past few months, and the machine has been > running non-stop since then on a non-xen kernel. > > Just a data-point for you, fyi :) > > -michal > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
I think I may be seeing the same problem on a set of supermicro server based on the same Intel E7520 "Lindenhurst" chipset as the 1850. I can run xen-2.0.3 from the Jan 24th tarball using kernel 2.6.10 on these systems without any problem but if I use the latest 2.0.5, testing or unstable tarballs with 2.6.11 the server hangs under IO load. It often happens when I tar/untar, cp, or mkfs. booting xen with "ignorebiostables" seems to solve the problem. I am running Redhat EL 3 & 4. I don''t know if it''s relevant but it looks like there was a patch added in 2.6.10/2.6.11 specifically for this chipset. "Disable SW irqbalance/irqaffinity for E7520/E7320/E7525" David> > -----Original Message----- > > From: xen-users-bounces@lists.xensource.com > > [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of michal > > urbanski > > Sent: Monday, May 09, 2005 2:50 PM > > To: xen-users@lists.xensource.com > > Subject: Re: [Xen-users] Problem with Dell Poweredge 1850 > > > > On Sun, May 08, 2005 at 06:43:59PM +0200, Arie Kraai wrote: > > > On Sun, May 08, 2005 at 10:15:45AM -0400, Rob See wrote: > > > > > > > > Any time the system is placed under high IO ( for example > > untar/bz2ing a > > > > tarball to create the fs for a xenU partiton) the machine hangs. > > > > > > Is this problem really xen-related; can you do the same actions booted > > > from a "native" kernel without a crash? > > > It looks like a memory or heating problem... > > > > I can state for certain that it is a xen problem. I''ve shelved the xen > > stuff on our 2850 for the past few months, and the machine has been > > running non-stop since then on a non-xen kernel. > > > > Just a data-point for you, fyi :) > > > > -michal > > > > _______________________________________________ > > Xen-users mailing list > > Xen-users@lists.xensource.com > > http://lists.xensource.com/xen-users > > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
All, This seems to have fixed the problem. I didn''t get the usual lockup running either command that guaranteed me a hang in the past. Are there any side effects to the ignorebiostables option that I need to be aware of. Will there be a proper patch to address this issue ? Thanks, -Rob David Harms wrote:> I think I may be seeing the same problem on a set of supermicro server > based on the same Intel E7520 "Lindenhurst" chipset as the 1850. I > can run xen-2.0.3 from the Jan 24th tarball using kernel 2.6.10 on > these systems without any problem but if I use the latest 2.0.5, > testing or unstable tarballs with 2.6.11 the server hangs under IO > load. It often happens when I tar/untar, cp, or mkfs. > > booting xen with "ignorebiostables" seems to solve the problem. > > I am running Redhat EL 3 & 4. > > I don''t know if it''s relevant but it looks like there was a patch > added in 2.6.10/2.6.11 specifically for this chipset. "Disable SW > irqbalance/irqaffinity for E7520/E7320/E7525" > > David > > >>>-----Original Message----- >>>From: xen-users-bounces@lists.xensource.com >>>[mailto:xen-users-bounces@lists.xensource.com] On Behalf Of michal >>>urbanski >>>Sent: Monday, May 09, 2005 2:50 PM >>>To: xen-users@lists.xensource.com >>>Subject: Re: [Xen-users] Problem with Dell Poweredge 1850 >>> >>>On Sun, May 08, 2005 at 06:43:59PM +0200, Arie Kraai wrote: >>> >>>>On Sun, May 08, 2005 at 10:15:45AM -0400, Rob See wrote: >>>> >>>>>Any time the system is placed under high IO ( for example >>> >>>untar/bz2ing a >>> >>>>>tarball to create the fs for a xenU partiton) the machine hangs. >>>> >>>>Is this problem really xen-related; can you do the same actions booted >>>>from a "native" kernel without a crash? >>>>It looks like a memory or heating problem... >>> >>>I can state for certain that it is a xen problem. I''ve shelved the xen >>>stuff on our 2850 for the past few months, and the machine has been >>>running non-stop since then on a non-xen kernel. >>> >>>Just a data-point for you, fyi :) >>> >>>-michal >>> >>>_______________________________________________ >>>Xen-users mailing list >>>Xen-users@lists.xensource.com >>>http://lists.xensource.com/xen-users >>> >> > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
It will make your shiny new dual proc hyperthreaded system look like a single CPU non-ht machine to xen. Other than that it''s no problem. :)>From the user manual:ignorebiostables Disable parsing of BIOS-supplied tables. This may help with some chipsets that aren''t fully supported by Xen. If you specify this option then ACPI tables are also ignored, and SMP support is disabled. I am having more luck compiling from the latest unstable tarball. I will let you know how my testing goes. David On 5/10/05, Rob See <rob@rsee.net> wrote:> All, > > This seems to have fixed the problem. I didn''t get the usual lockup > running either command that guaranteed me a hang in the past. Are there > any side effects to the ignorebiostables option that I need to be aware > of. Will there be a proper patch to address this issue ? > > Thanks, > -Rob > > David Harms wrote: > > I think I may be seeing the same problem on a set of supermicro server > > based on the same Intel E7520 "Lindenhurst" chipset as the 1850. I > > can run xen-2.0.3 from the Jan 24th tarball using kernel 2.6.10 on > > these systems without any problem but if I use the latest 2.0.5, > > testing or unstable tarballs with 2.6.11 the server hangs under IO > > load. It often happens when I tar/untar, cp, or mkfs. > > > > booting xen with "ignorebiostables" seems to solve the problem. > > > > I am running Redhat EL 3 & 4. > > > > I don''t know if it''s relevant but it looks like there was a patch > > added in 2.6.10/2.6.11 specifically for this chipset. "Disable SW > > irqbalance/irqaffinity for E7520/E7320/E7525" > > > > David > > > > > >>>-----Original Message----- > >>>From: xen-users-bounces@lists.xensource.com > >>>[mailto:xen-users-bounces@lists.xensource.com] On Behalf Of michal > >>>urbanski > >>>Sent: Monday, May 09, 2005 2:50 PM > >>>To: xen-users@lists.xensource.com > >>>Subject: Re: [Xen-users] Problem with Dell Poweredge 1850 > >>> > >>>On Sun, May 08, 2005 at 06:43:59PM +0200, Arie Kraai wrote: > >>> > >>>>On Sun, May 08, 2005 at 10:15:45AM -0400, Rob See wrote: > >>>> > >>>>>Any time the system is placed under high IO ( for example > >>> > >>>untar/bz2ing a > >>> > >>>>>tarball to create the fs for a xenU partiton) the machine hangs. > >>>> > >>>>Is this problem really xen-related; can you do the same actions booted > >>>>from a "native" kernel without a crash? > >>>>It looks like a memory or heating problem... > >>> > >>>I can state for certain that it is a xen problem. I''ve shelved the xen > >>>stuff on our 2850 for the past few months, and the machine has been > >>>running non-stop since then on a non-xen kernel. > >>> > >>>Just a data-point for you, fyi :) > >>> > >>>-michal > >>> > >>>_______________________________________________ > >>>Xen-users mailing list > >>>Xen-users@lists.xensource.com > >>>http://lists.xensource.com/xen-users > >>> > >> > > > > _______________________________________________ > > Xen-users mailing list > > Xen-users@lists.xensource.com > > http://lists.xensource.com/xen-users > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users