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fd972a739c
Before we were unshare(CLONE_NEWCGROUP)ing in a child task, which meant that we couldn't c/r this test once we forbid nested cgroup namespaces. Instead, use a new strategy for testing cgroup namespaces: set up the namespace before forking the test task so there is no nesting, and then do a setns back to init's ns to check the cgroup namespace of the test. This doesn't work in the 'ns' flavor because init in the test's pid ns is the test itself. There is a bit of a chicken and egg problem here, though, because if we set it up after test_init(), we can't unshare because that would be a nested cgroup ns. Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com> 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
How to contribute
- How to submit patches;
- Send all bug reports to mailing list;
- Spread the word about CRIU in social networks;