----- Original Message ----- > From: "Riccardo Veraldi" <riccardo.vera...@cnaf.infn.it> > To: kvm@vger.kernel.org > Sent: Friday, March 30, 2012 5:45:47 PM > Subject: live migration problems. > > Hello, > I have problems with live migration. > I have several VMs in a CentOS 6.2 cluster environment. > > When I migrate one virtual machine from nodeA to nodeB the migration > goes smoothly but > in the same time the VM is migrated an external ping cannot reach the > VM. > I ping the VM before migration and after the migration is done ping > stops to work. > This happens for some VM and does not happen for other VM. > Apparently the VM are configured the same way so I can't understand > why > this is happening. > If I migrate the VM back to the original physical node the ping start > working again like if the switch did not > realize the VM mac address changed switch port. > To make things work always I Should make a ping from the VM console > to > whatever host and > in this case the arp table is updated on the switch. > The strange thing as I said is that some VM seems to always work > after > migration while other > seems never to work untl they are migrated back to original cluster > node. > Any hints or suggestions ?
Make sure you have DELAY=0 set in the ifcfg file for the bridge on both hosts. > > thank you very much > > Rick > > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
