I'm investigating the current schemes for the VM live storage migration in QEMU system. I have the following questions:
1. What is the functionality of drive_mirror in QEMU? Is it designed as a VM live storage migration approach?
2. What's the difference between drive_mirror and vMotion? I learned that vMotion employs IO Mirroring mechanism to migration a running VM with all the virtual disk images. Are there any other mechanisms inside QEMU serve this purpose as well?
I'm looking for a mechanism in QEMU, which is similar to vMotion ( IO Mirroring) in ESX environment.
Thanks!
Yaodong