[Xen-users] RE: How to disable xennet PV driver

["James Harper" <james.harper@xxxxxxxxxxxxxxxx>]

> Hello!
> I'm using latest Windows GPL PV drivers on Win 2003 r2 (sp2) and while
> HD driver works o.k.
> network driver gives STOP error at boot-up or at net use.
> Is it possible to re-enable old driver?

There is a bug in the grant table code that affects xennet when vcpus > 1. Can 
you change to vcpus = 1 for now?

Btw, this bug is pretty nasty and can kill your filesystem.

James

> 
> 
> System info: (maybe useful)
> Linux 84-255-235-83 2.6.18-5-xen-amd64 #1 SMP Sat Dec 22 22:22:11 UTC
> 2007 x86_64 GNU/Linux
> 
> Xen (and utils) 3.1.3-1-amd64 from packages.debianbase.de on Debian
> etch.
> 
> HW is white MacBook 1.5GB RAM
> Cpu: Intel(R) Core(TM)2 CPU         T7400  @ 2.16GHz
> 
> Windows error: STOP : 0x0000008E (0x80000003, 0x80878A8F, 0x8089A14C,
> 0x00000000)
> 
> Windows xen config:
> name = "w2k3r2s"
> builder = "hvm"
> memory = "512"
> disk = [ 'phy:/dev/vg1/winsnap,ioemu:hda,w' ]
> #,'file:/home/w2k3r2_cd2.iso,hdc:cdrom,r' ]
> vif = [ 'type=ioemu, mac=00:16:3e:0c:7e:18, bridge=xenbr0' ]
> device_model = "/usr/lib64/xen/bin/qemu-dm"
> kernel = "/usr/lib64/xen/boot/hvmloader"
> vnc=1
> #vncunused=1
> vnclisten='0.0.0.0'
> apic=1
> acpi=1
> pae=1
> boot='c'
> vcpus=2
> usb=1
> usbdevice='tablet'
> on_reboot = 'restart'
> on_crash = 'restart'
> on_powerof = 'destroy'
> 
> 
> On 6.2.2008, at 0:06, James Harper wrote:
> 
> >> By now the whole dom0 left unusable, former configured bridge routing
> > is
> >> working
> >> as well as the other domU's are up and running.
> >> ... one shouldn't test at production environment ;)
> >
> > No, one shouldn't :)
> >
> > I test in a semi-production environment (there's a secondary mail
> > server
> > running on the same Dom0).
> >
> > Curiously, I'm testing an SMP problem reported by Jim Burns, and when
> > the SMP DomU crashed last night during the backup, it also crashed
> > another non-SMP Windows DomU on the same server. I think we've got
> > some
> > ASSERT statements in the error path for xennet instead of handling
> > errors gracefully.
> >
> > Early in development, I was able to hang the whole physical machine
> > too,
> > but that hasn't happened in a while.
> >
> > One thing I have noticed though is that when I first install the
> > network
> > drivers in a windows DomU, Dom0 terminates all tcp connections,
> > although
> > they can be re-established immediately. It might be something like
> > that
> > the bridge thinks it has detected a loop.
> >
> > James
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users


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