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

<big>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 the 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 the freeze. With this feature, application live migration, snapshots, remote debugging, and [[usage scenarios|many other things]] are possible.

Checkpoint/Restore In Userspace, or CRIU (pronounced kree-oo, IPA: /krɪʊ/, Russian: криу), is a Linux software. It can freeze a running container (or an individual application) and checkpoint its state to disk. The data saved can be used to restore the application and run it exactly as it was during the time of the freeze. Using this functionality, application or container live migration, snapshots, remote debugging, and [[usage scenarios|many other things]] are now possible.

CRIU started as a project of [https://virtuozzo.com/ Virtuozzo] and grew with tremendous help from the [[community]]. It is currently used by (integrated into) [https://openvz.org/ OpenVZ], [[LXC]]/LXD, [[Docker]], and [[Integration|other software]], and [[packages|packaged for many Linux distributions]].

CRIU started as a project of Virtuozzo, and grew with the tremendous help from the [[community]]. It is currently used by (integrated into) OpenVZ, [[LXC]]/LXD, [[Docker]], Podman, and [[Integration|other software]], and [[packages|packaged for many Linux distributions]].

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: 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.

: 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]]

;[https://www.criu.org/index.php?title=FAQ FAQ] & [[When C/R fails]]

: A sort of troubleshooting guide

: A sort of troubleshooting guide

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== Misc ==

== Misc ==

* [[Podcasts]] and other audio/video interviews

* [[Podcasts]] and other audio/video interviews

* Project [[history]]

* Project [[history]]