I presume you are using the default rtl8139 nic. Correct? What does 'ethtool -S eth0' show when the network locks up? Many months ago adding 'noapic' to the (guest) kernel boot parameters helped, but that option is not currently helping with my RHEL4 networking issues.
A thread for this issue is at: http://sourceforge.net/tracker/index.php?func=detail&aid=1802082&group_id=180599&atid=893831 david Arne Kepp wrote: > Hi, > > I am running KVM 61 on CentOS 5.1 x86_64 (on a Dell PowerEdge 2950 > III). I start my virtual machine as follows: > qemu-kvm -hda /dev/kvm_sdb/geust_root -m 1024 -net tap -net > nic,vlan=0,macaddr=00:16:3e:00:00:02 -daemonize -nographic -smp 2 > > The problem is that when the guest (also CentOS 5.1 x86_64) utilizes the > network heavily (scp to a machine on the same switch, around 12 mbyte/s) > the network on the virtual machine just drops out. > > I can no longer ping the virtual machine, and any existing SSH sessions > die. If I connect to the virtual machine using VNC everything looks okay > (eth0 is up, routes are okay), but I still cannot connect to anything. > All other virtual machines on the same host continue to work as if > nothing has happened. The same problem occurred in -58 and -59. > > /var/log/messages on the guest says: > NETDEV WATCHDOG: eth0: transmit timed out > eth0: link up, 100Mbps, full-duplex, lpa 0x05E1 > > Any suggestions (permanent fixes or temporary workarounds, I'll take > what you got) would be much appreciated. > > Thanks for all the great work :) > -Arne > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > 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 > ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. 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
