Izik Eidus schrieb: > Mike wrote: >> Izik Eidus schrieb: >> >>> 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? >>> >> Yes. If I run only 1 vm, it runs days without problems. >> I have sometimes have peaks in reply time from the guest. >> e.g. >> bytes=32 time=34ms TTL=57 >> bytes=32 time=34ms TTL=57 >> bytes=32 time=119ms TTL=57 >> bytes=32 time=400ms TTL=57 >> bytes=32 time=540ms TTL=57 >> bytes=32 time=947ms TTL=57 >> bytes=32 time=754ms TTL=57 >> bytes=32 time=850ms TTL=57 >> bytes=32 time=925ms TTL=57 >> bytes=32 time=2032ms TTL=57 >> bytes=32 time=897ms TTL=57 >> bytes=32 time=197ms TTL=57 >> bytes=32 time=34ms TTL=57 >> bytes=32 time=34ms TTL=57 >> >> but if I ping the host server the same time, the reply time is >> normal, around 34ms >> >> ------------------------------------------------------------------------- >> >> This SF.net email is sponsored by: Microsoft >> Defy all challenges. Microsoft(R) Visual Studio 2005. >> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ >> _______________________________________________ >> kvm-devel mailing list >> kvm-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/kvm-devel >> > ok sound interesting, > you are sure you are using kvm53 modules? > (one issue like that solved at kvm53, but maybe we have another one...) > I checked the version of the modules, here are the results: /sbin/modinfo kvm filename: /lib/modules/2.6.22-14-server/extra/kvm.ko license: GPL author: Qumranet version: kvm-53 srcversion: 185E42DE9D9A49E63243A57 depends: vermagic: 2.6.22-14-server SMP mod_unload
/sbin/modinfo kvm_amd filename: /lib/modules/2.6.22-14-server/extra/kvm-amd.ko license: GPL author: Qumranet version: kvm-53 srcversion: F215F1AB760E357FF762B4D depends: kvm,kvm vermagic: 2.6.22-14-server SMP mod_unload ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
