we are upgrading with last update of OVS the servers.. After we upgraded one server (called A) from 2.6.39-200.1.1.el5uek to 2.6.39-200.1.9.el5uek with certified yum repository from Oracle, the live migration not working anymore in correct mode.
If I will migrate one guest from another server to server A or vice versa , the results are the same, the 3%-10% of packets dropped. Is it a normal behaviour , if the kernel are different ? Or are this kernel/driver/xen bugged ?
Obviously the version of OVS are always 3.1.1 and the oracle vm the 3.1.1 build 478, and previously the live migration always worked well. No errors are visible and the job gone well.
Edited by: user10717184 on Oct 29, 2012 12:46 AM
I try to migrate with xm command but the problem not disappear .
The xm command not give any result code. it finished correctly, by the way or we lost 3-10% of packets or stop pinging .
[root@******** ~]# xm migrate -l ****UUID*** ****SERVER_OVS_NAME***
[root@******** ~]# echo $?
Now the server have both the new kernel, but it continues to have the problem. The strange thing is that if you return to previous server OVS, the pinging restart, sometime.
This sounds like your network/VLAN group stuff is mismatched between your OVM hosts.. If the machine migrates, but doesnt talk on the network or talks intermittenly I would immediately start looking at the networking config on the destination server (both from a NIC conf and switch port config)