Main Page
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Welcome to CRIU, a project to implement checkpoint/restore functionality for Linux in userspace.
Checkpoint/Restore In Userspace, or CRIU, is a software tool for Linux operating system. Using this tool, you can freeze a running application (or part of it) and checkpoint it to a hard drive as a collection of files. You can then use the files to restore and run the application from the point it was frozen at. The distinctive feature of the CRIU project is that it is mainly implemented in user space.
The project is currently under very active development. CRIU is a sub-project of OpenVZ.
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
- LXC
- How to dump and restore an LXC container
Developing
If you're interested in CRIU development, please 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
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Under the hood
External links
- 2025-08-13, Software Availability Protection in Cyber-Physical Systems
- 2025-07-14, PhoenixOS: Concurrent OS-level GPU Checkpoint and Restore with Validated Speculation
- 2025-06-18, Improving Checkpoint/Restore Functionality in Kubernetes
- 2025-06-12, MOSE: A Novel Orchestration Framework for Stateful Microservice Migration at the Edge
- 2025-05-14, Elastic Vertical Memory Management for Container-based Stateful Applications in Kubernetes
- 2025-05-02, Practice and Observation: Live Migration for MPI Workload
- 2025-04-28, GRANNY: Granular Management of Compute-Intensive Applications in the Cloud
- 2025-04-28, KubeSPT: Stateful Pod Teleportation for Service Resilience with Live Migration
- 2025-04-04, Optimizing Stateful Microservice Migration in Kubernetes with MS2M and Forensic Checkpointing
- 2025-03-30, CXLfork: Fast Remote Fork over CXL Fabrics
- 2025-02-23, CRIUgpu: Transparent Checkpointing of GPU-Accelerated Workloads
Other
- Project history
- Logo description
- Events
- Join the CRIU acronym fun
http://static.openvz.org/wiki/openvz-logo.png