[Xen-users] DomU Fails when network load is high

["Chris Holland" <rangerco1@xxxxxxxxx>]

Hello,

I am using Gentoo 2008.1 with Xen 3.2.1
I am having an unusual problem with a DomU, it is setup as a router. The DomU is connected to 2 NICs, one of which is connected to the outside and the other to the internal network.
When I pass a large amount of data through this DomU like a large torrent download for example, the DomU simply dies with no errors or any indication. It just fails and I have to
re-create the vm.
If any more info is needed please let me know and I will provide it.

Any help would be appreciated
Thanks Chris

My "xm info" is as follows:

Magnesium ~ # xm info
host                   : Magnesium
release                : 2.6.21-xen
version                : #11 SMP Sat May 3 01:58:49 MDT 2008
machine                : x86_64
nr_cpus                : 2
nr_nodes               : 1
cores_per_socket       : 2
threads_per_core       : 1
cpu_mhz                : 2109
hw_caps                : 178bf3ff:ebd3fbff:00000000:00000010:00002001:00000000:0000011f
total_memory           : 4063
free_memory            : 8
node_to_cpu            : node0:0-1
xen_major              : 3
xen_minor              : 2
xen_extra              : .1
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
cc_compiler            : gcc version 4.1.2 (Gentoo 4.1.2 p1.1)
cc_compile_by          : root
cc_compile_domain      : acutefailure.com
cc_compile_date        : Tue Jun  3 13:14:54 MDT 2008
xend_config_format     : 4

Also, here is the output from "brctl show"
Magnesium ~ # brctl show
bridge name    bridge id        STP enabled    interfaces
xenbr0        8000.001018249e83    no        peth0
                                                                    vif11.1
                                                                    vif2.0
                                                                    vif3.0
                                                                    vif4.0
                                                                    vif5.0
xenbr1        8000.001018308ef8    no        peth1
xenbr2        8000.001d7d93c2cc    no        peth2
                                                                    vif11.0

and here is the configuration file for the vm:

Magnesium xen # cat Helium 
# General
name = "Helium"
memory = 256;

# Bootinn
kernel = "/mnt/storage/VM_Storage/boot/kernel-genkernel-x86_64-xen-2.6.21-xen-domU"
ramdisk = "/mnt/storage/VM_Storage/boot/initramfs-genkernel-x86_64-xen-2.6.21-xen-domU.gz"

#Virtual Disks
disk = [ 'file:/mnt/storage/VM_Storage/VMs/Helium.img,hda1,w',
             'file:/mnt/storage/VM_Storage/VMs/Helium-Swap.img,hda2,w' ]
     
root = "/dev/hda1 ro"

# Virtual Network
vif = [ "mac=00:16:3e:00:01:02, bridge=xenbr2",
           "mac=00:16:3e:00:00:02 ,bridge=xenbr0" ]





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