Now in KVM, when RAM snapshot, vcpus needs stopped, it is Unfriendly restrictions to users.
Are there plans to achieve ram live Snapshot feature? in my mind, Snapshots can not occupy additional too much memory, So when the memory needs to be changed, the old memory page is needed to flush to the file first. But flushing to file is too slower than memory, and when flushing, the vcpu or VM is need to be paused until finished flushing, so pause...resume...pause...resume............., more and more slower. Is this idea feasible? Are there any other thoughts?
