No idea what is going on, but recent kernels lock up here after
transferring some amount of data. So far I only know that 2.6.32 is the
last working kernel I have tested and 3.0 is the first non-working
version I tested.
How to reproduce:
vm1: iperf -c vm2
vm2: iperf -s vm1
After some time either of both VMs cannot be pinged anymore, neither
from host nor from the other (still working) VM. Direct access of the
non-net-working vm via console still works fine.
Also not important if I run with vhost on or off, in both modes it fails.
qemu-kvm version is 1.0.
Here's my qemu-kvm start-up script:
#! /bin/bash
source ~/bin/kvm-config.sh
iface=`sudo tunctl -b -u $USER`
FILE=${IMAGE_DIR}/squeeze1.img
#NICMODEL=e1000
NICMODEL=virtio
DISKIF=virtio
#DISKIF=ide
#DISKIF=scsi
${kvm} \
-m 4096 \
-net nic,macaddr=52:54:00:12:34:11,model=${NICMODEL} \
-net tap,id=foo,script=${HOME}/bin/kvm-ifup,downscript=${HOME}/bin/kvm-ifdown,ifname=$iface,vhost=on \
-boot c \
-drive file=${FILE},if=${DISKIF},boot=on,cache=writeback \
${common_opts} \
"$@"
sudo /usr/sbin/tunctl -d $iface
Any idea what is going on or how to debug it?
Thanks,
Bernd
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