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This article describes the status of CRIU integration with [https://podman.io/ Podman], and how to use it.
This article provides an overview of CRIU integration with Podman and explains how to use it. For more detailed information on the available Podman options, please refer to the [https://podman.io/docs/checkpoint documentation] and [https://docs.podman.io/en/latest/markdown/podman-container-checkpoint.1.html man pages].
{{Note|Podman checkpoint/restore currently supports only root containers. Therefore, you have to run the example container as root.}}
== Container Checkpoint/Restore ==
== Container Checkpoint/Restore ==
$ sudo podman rm looper-1 looper-2
$ sudo podman rm looper-1 looper-2
$ sudo podman container restore checkpoint-1 checkpoint-2
$ sudo podman container restore checkpoint-1 checkpoint-2
== Container Pre-Checkpointing ==
The following example demonstrates how to use Podman's pre-checkpoint feature:
$ sudo podman run -d --name looper busybox /bin/sh -c 'i=0; while true; do echo $i; i=$(expr $i + 1); sleep 1; done'
$ sudo podman container checkpoint --pre-checkpoint -l -e /tmp/pre.tar
$ sudo podman container checkpoint --with-previous --export /tmp/test.tar.gz -l
$ sudo podman rm -l
$ sudo podman container restore --import /tmp/test.tar.gz --import-previous /tmp/pre.tar