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Download Tarball: criu-4.3.1.tar.gz Version: 4.3.1 "CRIURBO" Released: 12 Nov 2026 GIT tag: v4.3.1 Installation • Usage Releases

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

CRIU is a sub-project of OpenVZ Linux Containers.

Releases

• crtools-0.1.tar.bz2 23 Jul 2012 (sha1 aa1a9af42f4132e00701555a00ee3884cbe0c36b)

Using

CR tools

Main checkpoint/restore utility description (sort of HOWTO)

Usage scenarios

Ideas how crtools can be used (some are crazy indeed)

What software is supported

Describes TODO list in higher level terms

Developing

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

Images

Description of image files format

Commits

Mainline kernel commits tracker

ZDTM Test Suite

Zero downtime test suite

TODO

Current TODO list

Under the hood

• Sockets
• Memory dumping and restoring
• Checkpoint/Restore
• TCP connection
• Porting crtools to new kernel releases
• Files

External links

• 2026-12-18, Transparent and Unified CPU-GPU Snapshots for LLM Inference Platforms
• 2026-11-16, Parallel Restore-Optimized Snapshot Compression for Cost-Efficient Inference Serving
• 2026-09-21, Fast Recovery for LLM Serving via Decoupled Device Memory Lifetime in Dynamo
• 2026-07-22, Forensic Analysis of Container Snapshot Chains for Post-event Reconstruction
• 2026-07-14, Accelerating Model Inference with On‑the‑Fly Snapshot Compression

More external articles...