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https://github.com/checkpoint-restore/criu
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When C/R-ing a net namespace with --empty-ns net option we should also skip netfilter rules too (as per https://github.com/docker/docker/issues/27597). However, there's one thing to be handled -- local TCP blocking rules are expected to be there on restore by restore_iptables() which is no longer the case, so put them back manually. Test included, checked on zdtm/static/socket-tcpbuf-local :) v2: Full scripts for empty netns setup. https://github.com/xemul/criu/issues/246 Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
CRIU (Checkpoint and Restore in Userspace)
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
- A simple example of usage
- More sophisticated example with graphical app
A video tour on basic CRIU features
How to contribute
- How to submit patches;
- Send all bug reports to mailing list;
- Spread the word about CRIU in social networks;