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https://github.com/checkpoint-restore/criu
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The implementation is pretty straightforward. When dumping per-thread misc data with parasite, collect one, then write in thread_core_info. On restore wait for creds restore and put the value back (some creds changes drop it to zero). Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
criu ==== An utility to checkpoint/restore tasks. Using this tool, you can freeze a running application (or part of it) and checkpoint it to a hard drive as a collection of files. You can then use the files to restore and run the application from the point it was frozen at. The distinctive feature of the CRIU project is that it is mainly implemented in user space. The project home is at http://criu.org Pages worth starting with are * Kernel configuration, compilation, etc: http://criu.org/Installation * A simple example of usage: http://criu.org/Simple_loop * More sophisticated example with graphical app: http://criu.org/VNC