Il 25/06/2014 16:32, Xiongzi Ge ha scritto:
I should make it clearer. I want to use a device for caching for the guest in host A. Then after the guest migrating to Host B, there is also a device for caching in Host B. I want to the guest can access the new cache device in Host B at first automatically. I also want the guest can access the previous cache device in Host A, if it gets a miss. Here, I may need to modify some interfaces. Is there a simple way to do this?
If your caching is done in the guest, the guest must use O_DIRECT to open the block device.
Paolo
