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criu-1.5.tar.bz2

Released: 2 Mar 2015
Changes: git commit v1.5

InstallationUsage
Releases

Welcome to CRIU, a project to implement checkpoint/restore functionality for Linux in userspace.

Checkpoint/Restore In Userspace, or CRIU (pronounced kree-oo, IPA: /krɪʊ/, Russian: криу), is a software tool for Linux operating system. 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.


Using

Getting packages for your distribution
Or try manual installation to have CRIU on your system

CLI, RPC and C API
Three ways to start using the C/R functionality
Usage scenarios
Ideas how criu can be used (some are crazy indeed)
Category:HOWTO
Collection of real world examples of how to use CRIU. Some are complex, some are not. HOW TO dump a simple loop might be the best one to start with. Also a set of asciinema records for real-life examples.
Category:API
Collection of pages about CRIU's API.
When C/R fails
A sort of troubleshooting guide
What can change after C/R
CRIU cannot (yet) save and restore every single bit of tasks' state. This page describes what bits visible through standard kernel API are such.
What cannot be checkpointed
What an application could do to make CRIU refuse to dump it.

Developing

If you're interested in CRIU development, please subscribe to the criu mailing list: http://lists.openvz.org/mailman/listinfo/criu

Images
Description of image files format
Plugins
CRIU can call plugins provided by people
Upstream kernel commits
Mainline kernel commits tracker
Recent commits
CRIU tool repository commits
Manpages
Kernel's manpages commits tracker
ZDTM Test Suite
Zero downtime test suite
TODO
Current TODO list
User namespace
Implementing user namespace support
Postulates
What to keep in mind when writing new code
Code coverage results
Shows how zdtm run covers the criu code paths
How to submit patches

Events
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Linux Plumbers 2015

Linuxplumbers.png

August 19-21, 2015, Seattle, WA

C/R miniconf

--talk 16:30, 9 February 2015 (MSK)




Under the hood

External links

Date Article
2014-02-15 Efficient, Accurate and Reproducible Simulation of Multi-Threaded Workloads (slides) at OCCAM REPRODUCE Workshop
2013-11-25 v1.0 article on Phoronix
2013-11-25 A note about 1.0 on LWN
2013-10-29 Kernel summit report from LWN
2013-02-01 A blog post upon LCA-2013 talk.
2013-01-09 LWN: Checkpoint/restore and signals
2012-11-20 LWN: LCE: Checkpoint/restore in user space: are we there yet?
2012-05-01 LWN: TCP connection repair
2012-01-31 LWN: Preparing for user-space checkpoint/restore
2011-07-19 LWN Checkpoint/restart (mostly) in user space
Wikipedia: en:CRIU, ru:CRIU
OpenVZ blog: CRtools 0.1 released! (+ LWN.net repost, + this repost)
Debian includes crtools package
in Russian:

Other