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Revision as of 23:03, 4 October 2016

Download
Tarball: criu-3.13.tar.bz2
Version: 3.13 "Silicon Willet"
Released: 11 Sep 2019
GIT tag: v3.13
InstallationUsage
Releases

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

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 as a collection of files on disk. You can then use the files to restore the application and run it exactly as it was during the time of freeze. With this feature, application live migration, snapshots, remote debugging, and many other things are possible.


Events
Feed-icon.svg RSSAtom

Linux Plumbers Conference 2019

Linuxplumbers.png

September 9-11, Lisbon, Portugal

Update on Task Migration at Google Using CRIU

CRIU and the PID dance

CRIU: Reworking vDSO proxification, syscall restart

Secure Image-less Container Migration

--User:Avagin 14:05, 23 Aug 2019 (UTC)

Google Summer of Code 2019

Gsoc.png

Mar-Sep 2019

Google Summer of Code

--User:Avagin 21:32, 26 Feb 2019 (PST)




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. More info about APIs.
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.
FAQ & 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.
Contacts
Ways to communicate with CRIU community

Developing

If you're interested in CRIU development, please subscribe to the criu mailing list: https://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


Misc