On Wed, Mar 02, 2016 at 08:55:26PM -0700, Jidong Xiao wrote: > I have a Linux host machine, on which two Qemu/KVM virtual machines > are launched. Let's say they are VM1 and VM2, and their corresponding > processes on the host are Qemu1 and Qemu2. Inside VM2, I need nested > virtualization, i.e., A qemu process is started inside VM2, let's say > it's Qemu3, and a virtual machine VM3 is created accordingly. > > What I want to achieve is: communication between Qemu1 and Qemu3. For > example, if I need to migrate VM1 from Qemu1 to Qemu3, how do I > achieve that? One naïve solution is just go through the TCP stack, > however, since they are in the same host machine, is there any fast or > efficient way to implement it? I.e., Something similar to Unix domain > socket. I know Unix domain socket is not applicable to case like this, > but I am just looking for something similar to that. Does anyone have > any suggestions, ideas? Thanks. Use TCP/IP. The nested virtualization and migration aspect makes this non-trivial unless you choose a network protocol that supports routing. Stefan
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