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CRIU is a sub-project of http://static.openvz.org/wiki/openvz-logo.png

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

Download Tarball: criu-3.19.tar.gz Version: 3.19 "Bronze Peacock" Released: 27 Nov 2023 GIT tag: v3.19 Installation • Usage Releases

Latest version

Tarball:	criu-3.19.tar.gz
Version:	3.19 "Bronze Peacock"
Released:	27 Nov 2023
GIT tag:	v3.19

New features

• LoongArch64 support
• C/R membarrier() registrations
• Restore THP_DISABLE prctl.
• prctl: Migrate prctl(NO_NEW_PRIVS) setting.

Bugfixes

• Many fixes and improvements from the Google team.
• Fix dumping hugetlb-based memfd on kernels < 4.16.
• Fixes here and there.

Improvements

• drop python 2 support
• support XSAVE on newer Intel CPUs

Old versions

3.x

The following 3.x releases were made:

• 3.17 "Radiant Redstart"
• 3.16 "Petrified Puffin"
• 3.15 "Titanium Falcon"
• 3.14 "Platinum Peacock"
• 3.13 "Silicon Willet"
• 3.12 "Ice Penguin"
• 3.11 "Glass Flamingo"
• 3.10 "Granite Eagle"
• 3.9 "Sand Martin"
• 3.8.1 "Snow Bunting"
• 3.8 "Snow Bunting"
• 3.7 "Vinyl Magpie"
• 3.6 "Alabaster Finch"
• 3.5 "Clay Jay"
• 3.4 "Cobalt Swan"
• 3.3 "Crystal Pelican"
• 3.2.1
• 3.2 "Tin Hoopoe"
• 3.1 "Graphene Swift"
• 3.0 "Basalt Wagtail"

2.x

The following 2.x releases were made:

• 2.12.1
• 2.12 "Vulcanite Rook"
• 2.11.1
• 2.11 "Acrylic Bullfinch"
• 2.10 "Brass Waxwing"
• 2.9 "Silk Tit"
• 2.8 "Bronze Siskin"
• 2.7 "Rubber Owl"
• 2.6 "Paper Crane"
• 2.5 "Concrete Oriole"
• 2.4 "Marble Lark"
• 2.3 "Wooden Duck"
• 2.2 "Carbon Nightingale"
• 2.1 "Steel Lapwing"
• 2.0

1.x

The following 1.x releases were made:

• 1.8
• 1.7.2
• 1.7
• 1.6.1
• 1.6
• 1.5.2
• 1.5.1
• 1.5
• 1.4
• 1.3.1
• 1.3
• 1.3-rc2
• 1.3-rc1
• 1.2
• 1.1
• 1.1-rc2
• 1.1-rc1
• 1.0

0.x

The following 0.x releases were made:

• 0.8
• 0.7
• 0.6
• 0.5
• 0.4
• 0.3
• 0.2
• 0.1

See also

• Changelogs to see all the changelogs on a single page.

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, 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

• 2024-04-22, Pronghorn: Effective Checkpoint Orchestration for Serverless Hot-Starts
• 2023-11-12, Checkpoint/Restart for CUDA Kernels
• 2023-10-23, Evicting for the greater good: The Case for Reactive Checkpointing in Serverless Computing
• 2023-04-20, A Dynamic Checkpoint Interval Decision Algorithm for Live Migration-Based Drone-Recovery System
• 2023-03-10, Forensic Container Analysis
• 2023-01-14, Async-fork: Mitigating Query Latency Spikes Incurred by the Fork-based Snapshot Mechanism from the OS Level
• 2022-12-05, Forensic container checkpointing in Kubernetes
• 2022-11-13, Out of hypervisor (OoH): efficient dirty page tracking in userspace using hardware virtualization feature
• 2022-08-07, iContainer: Consecutive Checkpointing with Rapid Resilience for Immortal Container-based Services

More external articles...