On Sat, Jan 29, 2011 at 07:32:31PM +0100, Jordan Pittier wrote:
> >Xen dom0 kernel does irq handling through Xen hypervisor,
> >so that might make some drivers behave in a different way baremetal vs.
> dom0.
> Ok, so the driver is a good "responsible" for this SCSI crazyness.
I'm not sure if it is, but it *could* be.
> >What driver version does the squeeze kernel have?
> 3.04. Which seems to be several years old. There is lot of users
> complaining about LSI drivers all over the Internet.*
> I will keep you posted as soon as I manage to build the latest driver.
See here for tips how to build updated megaraid_sas driver:
http://lists.xensource.com/archives/html/xen-devel/2010-11/msg00250.html
Maybe it helps also with your driver.
-- Pasi
> On Sat, Jan 29, 2011 at 7:25 PM, Pasi K*rkk*inen <[1]pasik@xxxxxx> wrote:
> > On Sat, Jan 29, 2011 at 07:03:16PM +0100, Jordan Pittier wrote:
> >> Thanks for your reply. LSI has indeed newer driver for the controler;
> >> but I can't "build" it, there's an error when I try to compile it [see
> >> attachement]. I will give another try in the next days.
> >>
> >> What is puzzling is that the IO errors only occurs with Xen HV. I am
> >> 100% willing to accept that the problem is the drivers, but how come
> >> the exact same kernel (the xenified one) could work fine without Xen
> >> loaded ? I am almost a noob in kernel/driver and stuff; but I thought
> >> the drivers were entirely in the kernel.
> >>
> >
> > Yep, the driver is entirely in the kernel, but that's not the whole
> story.
> >
> > Xen dom0 kernel does irq handling through Xen hypervisor,
> > so that might make some drivers behave in a different way baremetal vs.
> dom0.
> >
> > Also remember dom0 is a *vm*, so some timing stuff might happen
> > differently on baremetal vs. dom0.
> >
> >> I will try with the latest kernel in a few days.
> >>
> >> SLES11SP1 ships mptfusion 4.22
> >>
>
> ([2]http://www.novell.com/linux/releasenotes/x86_64/SUSE-SLES/11-SP1/#driver-updates-storage)
> >> I dont know for RHEL
> >>
> >
> > What driver version does the squeeze kernel have?
> >
> >
> > -- Pasi
> >
> >
> >> On Sat, Jan 29, 2011 at 6:02 PM, Pasi K*rkk*inen <[3]pasik@xxxxxx>
> wrote:
> >> > On Sat, Jan 29, 2011 at 04:27:25PM +0100, Jordan Pittier wrote:
> >> >> * *Hi,
> >> >> * *I have been tracking a bug affecting all my servers running
> Debian Squeeze
> >> >> * *for more than a month now, and I*desperately*need your help :)*
> >> >> * *I have 10 Sun v20z servers (2*66GB SCSI disk in RAID 1 ==
> mirror). 4 of
> >> >> * *them are running Debian Squeeze with the latest Xen Debian kernel
> >> >> * *(2.6.32-5-xen-amd64 ==*2.6.32-29). The rest are running Debian
> Lenny
> >> >> * *(2.6.26-2-xen-amd64 ==*2.6.26-26lenny1).
> >> >> * *On a Squeeze boxe, under very high IO (such as running a IO
> stress test,
> >> >> * *ie bonnie++), server starts behaving*weirdly and I see messages
> like these
> >> >> * *in kernel.log : [see attachement]. Then the server becomes
> totally
> >> >> * *unresponsive (but doesn't "freeze") and commands such as "ls" or
> "reboot"
> >> >> * *don't work anymore. I have to do an hard reboot. After the server
> has
> >> >> * *reboot, the RAID array seems degraded (I am using the mpt-status
> command)
> >> >> * *and starts rebuilding. After several hours, the raid array is
> "fine"
> >> >> * *("clean"). The raid controler is "LSI53C1030" U320, with driver
> "Fusion
> >> >> * *MPT SPI Host driver 3.04.06". I have attached the result of
> "lsmod".
> >> >> * *None of my Lenny boxes are affected by this issue, all of my
> Squeeze boxes
> >> >> * *are.
> >> >> * *What does it have to do with Xen ? When I boot my Squeeze boxes
> without
> >> >> * *the Xen hypervisor but the same Xen kernel, bonnie++
> runs*absolutely*fine.
> >> >> * *The issue appears only with the Xen hypervisor loaded.*
> >> >> * *There is a debian bug report for this
> >> >> * *:*[1][4]http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=603727
> >> >> * *Any suggestion ?*
> >> >
> >> > Did you check if LSI has newer driver version available?
> >> >
> >> > Also you might check which driver version for example RHEL6
> >> > or SLES11SP1 ships with.. both of those distros have 2.6.32 kernels
> too.
> >> >
> >> > On one of my testboxes I need to upgrade the LSI driver
> >> > to a newer version to make it work. This is SAS based LSI though.
> >> >
> >> > Can you try using another disk controller?
> >> >
> >> > Also: Did you try using the latest kernel (-30) ?
> >> >
> >> > -- Pasi
> >> >
> >> >
> >
>
> References
>
> Visible links
> 1. mailto:pasik@xxxxxx
> 2.
> http://www.novell.com/linux/releasenotes/x86_64/SUSE-SLES/11-SP1/#driver-updates-storage
> 3. mailto:pasik@xxxxxx
> 4. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=603727
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