CRIU (checkpoint/restore in userspace) is a project, which allows to dump a group of processes on a disk and restore them back later on the same or another host. Another significant use case is online (iterative) migration of Linux Containers. CRIU project was born in OpenVZ team to replace their in-kernel realization.

There was a talk here about CRIU two years ago. In that time CRIU was a young project and we needed to do a lot of things to be ready for real use. Now CRIU is mature enough, the main functionality is completed. People are getting more and more interested in the project. They are integrating CRIU into their own projects.  Our community becomes bigger. There are more than thirty people from Parallels, Canonical, Google, Docker, etc.

The talk will cover following questions: * How does this work? * How to integrate CRIU in another project? * What are the most interesting use cases? * What are the current state and future plans? * How are we caring about quality?