Hi Soren, Good news...
We're back to kvm-62 (stock hardy setup) and everything seems to be working fine this time, we're running seven guests and we haven't noticed any kernel trace or network problem so far. This leaves us with two variables that could explain the problems we've been experiencing originally: - zabbix server > 1.4.2 - dapper as guest We were running a compiled version of zabbix 1.4.5 (latest release) on a dapper guest, now we're running zabbix 1.4.2 (from deb) on a hardy/jeos host. Please note that we've also removed virtio as the network card model and everything still works right... At this point we think the problem was (is) caused by a zabbix, the dapper guest or a combination of the two. Thanks for your attention, feel free to invalidate this bug report if the problems come back we will eventually reopen it and add more details. PS Regarding kvm-68, I recompiled the modules using "module-assistant auto-install --force kvm" right after having installed all the debs generated from your intrepid sources, that's what was installed: # dpkg -l | grep kvm ii kvm 1:68+dfsg-0ubuntu1 Full virtualization on x86 hardware ii kvm-data 1:68+dfsg-0ubuntu1 Data files for the KVM package ii kvm-modules-2.6.24-16-server 1:68+dfsg-0ubuntu1+2.6.24-16.30 kvm modules for Linux (kernel 2.6.24-16-serv ii kvm-source 1:68+dfsg-0ubuntu1 Source for the KVM driver Note that I had to manually put kvm*.ko modules inside "/lib/modules/2.6.24-16-server/kernel/arch/x86/kvm" since the generated package puts them inside "/lib/modules/2.6.24-16-server/kernel/misc" and modprobe ignores them. That was the modinfo output: # modinfo kvm filename: /lib/modules/2.6.24-16-server/kernel/arch/x86/kvm/kvm.ko license: GPL author: Qumranet version: kvm-68 srcversion: 864F52BC7981C1E04A13D0E depends: vermagic: 2.6.24-16-server SMP mod_unload # modinfo kvm-intel filename: /lib/modules/2.6.24-16-server/kernel/arch/x86/kvm/kvm-intel.ko license: GPL author: Qumranet version: kvm-68 srcversion: C45B26FD80918EB572A6BEF depends: kvm vermagic: 2.6.24-16-server SMP mod_unload parm: bypass_guest_pf:bool parm: enable_vpid:bool parm: flexpriority_enabled:bool parm: enable_ept:bool Just out of curiosity, what's the supposed way to generate the modules package? correct me if I'm wrong but it seems as there is no an official way to update them without updating the whole kernel package... back then I asked on IRC but someone told me you were on vacation... ;-) -- kvm network instability https://bugs.launchpad.net/bugs/228163 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs