Mike wrote: > Izik Eidus schrieb: > >> Mike wrote: >> >>> Izik Eidus schrieb: >>> >>> >>>> Mike wrote: >>>> >>>> >>>>> Hello, >>>>> I have a problem with my virtual machines. I am using kvm53 >>>>> on an AMD Athlon(tm) 64 X2 Dual Core Processor 5000+. >>>>> As distribution I use Ubuntu server 7.10. >>>>> As kernel I use Linux 2.6.22-14-server #1 SMP Sun Oct 14 22:09:15 >>>>> GMT 2007 x86_64 GNU/Linux. >>>>> >>>>> I have 3 different vms running. At the beginning they all work >>>>> without a problem. >>>>> Then, after one moment to another one or more stop working. >>>>> I did a ping test to all the machines, the vm with the failure >>>>> stops pinging. >>>>> The result from external ping: Destination host unreachable. >>>>> The same result from a ping onto the main server. >>>>> >>>>> Here are my configuration files: >>>>> cat /etc/qemu-ifup >>>>> #!/bin/sh >>>>> /sbin/ifconfig $1 0.0.0.0 promisc up >>>>> /usr/sbin/brctl addif br0 $1 >>>>> sleep 2 >>>>> ------------------------------------------------------------------------ >>>>> >>>>> cat /etc/network/interfaces >>>>> auto lo >>>>> iface lo inet loopback >>>>> >>>>> auto br0 >>>>> iface br0 inet static >>>>> address 195.24.77.169 >>>>> netmask 255.255.255.0 >>>>> gateway 195.24.77.1 >>>>> bridge_ports eth0 >>>>> bridge_stp off >>>>> bridge_maxwait 5 >>>>> ------------------------------------------------------------------------ >>>>> >>>>> I use scripts for starting the vms: >>>>> kvm -hda apache.img -hdb apache_storage.img -m 512 -boot c -net >>>>> nic,vlan=0,macaddr=00:16:3e:00:00:01 -net tap -nographic -daemonize >>>>> kvm -hda postfix.img -m 512 -boot c -net >>>>> nic,vlan=0,macaddr=00:16:3e:00:00:12 -net tap -nographic -daemonize >>>>> kvm -hda openvpn.img -m 256 -boot c -net >>>>> nic,vlan=0,macaddr=00:16:3e:00:00:03 -net tap -nographic -daemonize >>>>> ------------------------------------------------------------------------ >>>>> >>>>> The tapN devices are being created at the startup of the vms. >>>>> >>>>> When I run dmesg I have this: >>>>> [ 112.390943] br0: port 2(tap1) entering learning state >>>>> [ 112.391919] br0: port 3(tap0) entering learning state >>>>> [ 112.397605] br0: port 4(tap2) entering learning state >>>>> [ 122.674313] tap0: no IPv6 routers present >>>>> [ 122.729185] tap1: no IPv6 routers present >>>>> [ 122.843901] tap2: no IPv6 routers present >>>>> [ 123.336081] kvm: emulating exchange as write >>>>> [ 127.367940] br0: topology change detected, propagating >>>>> [ 127.367949] br0: port 4(tap2) entering forwarding state >>>>> [ 127.362971] br0: topology change detected, propagating >>>>> [ 127.362977] br0: port 2(tap1) entering forwarding state >>>>> [ 127.362978] br0: topology change detected, propagating >>>>> [ 127.362980] br0: port 3(tap0) entering forwarding state >>>>> >>>>> No indication of a problem, nowhere in the log files. >>>>> >>>>> I don't know if the vms are freezing, or the network forwarding >>>>> stops working. >>>>> I also activated "net.ipv4.conf.default.forwarding=1" >>>>> >>>>> I googled days for that problem, but without a result. >>>>> I hope that maybe you have a solution for this problem. That would >>>>> be great, because I prefer using kvm instead of other >>>>> virtualization systems. >>>>> >>>>> Thank you very much in advance, >>>>> Greetings from Luxembourg. >>>>> >>>>> Have a nice day, >>>>> Mike >>>>> >>>>> >>>> it might be not the network that die, but the whole vm >>>> can you run the vms with -vnc ? (first vm -vnc :1 secoend vm -vnc :2 >>>> third vm -vnc :3) >>>> and try to connect to them with vncviewer and see if they are alive? >>>> >>>> >>>> >>> Thank you for your reply. >>> I can't connect to the vm if it has died, even with vnc. I tried this >>> already, no reply from the host. >>> I don't have physical access to the server because its located in a >>> dc. Only ssh to the host. >>> >>> >> ok this mean there is bug in kvm for amd and it not realted to the >> network >> what is the guest that you use? is it 64/32? >> >> > I'm using Debian Etch 32 Bit for all guests > with Kernel Linux apache 2.6.18-5-486 #1 Tue Oct 2 23:38:54 UTC 2007 > i686 GNU/Linux > > ------------------------------------------------------------------------- > ok but what more interesting me is: if you run just one vm is it work?
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