This article describes the status of checkpoint/restore integration with containerd, and how to use it.
Container Checkpoint/Restore
Pull "ubuntu:latest" image if not already available locally.
ctr image pull docker.io/library/ubuntu:latest
Create and run a container with ID "looper"
ctr run --runtime io.containerd.runc.v1 -d docker.io/library/ubuntu:latest looper /bin/sh -c 'i=0; while true; do echo $i; i=$(expr $i + 1); sleep 1; done'
Create container checkpoint
ctr c checkpoint --rw --task looper checkpoint/looper:20211011
Restore container from checkpoint
ctr c restore looper-1 checkpoint/looper:20211011