Here is some of my experience with OVM (Up to Version 3.1.1)
1) Docs says that 3 x mode are supported for NIC bonding.
- Active/Backup
- Adaptive Load Balancing
- Dynamic Link Aggregation (LACP)
But only A/B and Link Aggregation can be used for VM network. If you hook VM to ALB-bonded interface, VM will get extremely unstable connection.
Like you guess, we have to approach our network guys to configure LACP on their switches to get Redundancy+Performance.
2) Max. 2 x physical NIC ports per each bonded interface. You want more? Upgrade to 3.2.1 and you will get 4 ports at Max. for each bond. That sucks. Doesn't it? Especially for VMware guys...
3) It supports Live-Migration!!! Hold on a sec! You can live-migrate only one VM at a time. Sorry pals, you get a long way to go if you have many VMs to migrate live.
4) NO SNAPSHOT! Don't waste time finding how to take snapshot of VMs in OVM. Oracle gives you a work-around method close enough to taking snapshot:"Thin Cloning".
Yes. Thin Cloning is a neat thing that makes use of OCFS2's Reflinking feature. You can do "Thin Cloning" live. You can read more about Reflinking here.
To be continued.....
