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
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