Difference between revisions of "Integration"

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CRIU is not so easy to be used as a standalone tool -- it works best integrated into other software. This page lists such software and provides details about the current status.
 
CRIU is not so easy to be used as a standalone tool -- it works best integrated into other software. This page lists such software and provides details about the current status.
  
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== OpenVZ ==
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== Container platforms ==
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{{Status|in progress}}
 
  
−
Currently, vzctl supports CRIU for checkpoint/restore of upstream containers (i.e. when non-OpenVZ kernel is used). Commands <code>vzctl suspend</code> and <code>vzctl restore</code> fully work. Live migration doesn't work yet as it requires support for <code>vzctl suspend {--suspend, --dump, --kill, --restore}</code> which is not yet implemented as it requires a separate daemon to hold the state of a partially checkpointed container (or an ability from criu tool to do that).
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=== Virtuozzo/OpenVZ ===
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* [https://openvz.org Project homepage]
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{{Status|ready}}
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* [http://git.openvz.org/?p=vzctl&a=search&h=HEAD&st=commit&s=CRIU%7Ccriu%7Ccrtools&sr=1 Relevant vzctl git commits]
+
 
 +
As of Virtuozzo/OpenVZ 7, CRIU is fully integrated and supported. Older OpenVZ releases used in-kernel checkpoint/restore functionality, now superseded by CRIU.
 +
 
 +
* [https://openvz.org/ OpenVZ]
 +
* [https://virtuozzo.com/ Virtuozzo]
  
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== [[LXC]]/LXD ==
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=== LXC/LXD ===
 
{{Status|ready}}
 
{{Status|ready}}
 
* [http://linuxcontainers.org Project homepage]
 
* [http://linuxcontainers.org Project homepage]
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* [https://linuxcontainers.org/lxc/manpages/man1/lxc-checkpoint.1.html lxc-checkpoint man page]
 
* [https://linuxcontainers.org/lxc/manpages/man1/lxc-checkpoint.1.html lxc-checkpoint man page]
  
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== [[Docker]] ==
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''See also: [[LXC]]''
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{{Status|in progress}}
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 +
=== Docker ===
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{{Status|ready}}
 
* [https://docker.io Project homepage]
 
* [https://docker.io Project homepage]
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* Integration [https://github.com/docker/libcontainer/pull/204 efforts] done by Saied Kazemi from Google
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* [https://github.com/docker/libcontainer/pull/479 Merged] into libcontainer/runc
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* [https://github.com/docker/docker/pull/22049 Merged] into Docker itself
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* Preparations [https://github.com/docker/libcontainer/pull/204 efforts] done by Saied Kazemi
  
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== CoreOS Rocket ==
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''See also: [[Docker]] C/R''
 +
 
 +
=== CoreOS Rocket ===
 
{{Status|not started}}
 
{{Status|not started}}
  
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== OpenMPI ==
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== Tools and utilities ==
 +
 
 +
=== The <code>file</code> utility ===
 +
{{Status|ready}}
 +
* Starting from v1.6 new images (v1.1) will be generated
 +
* File utility starting from 5.23 [https://github.com/file/file/commit/0d76d756c5d7d5bbd4df6390b21b080f32665fd6 will support these]
 +
 
 +
=== Screen/TMUX ===
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{{Status|stalled}}
 +
 
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* Jerome [https://github.com/jpetazzo/critmux did] this some time ago
 +
 
 +
''See also: [[Screen]]''
 +
 
 +
=== Shell ===
 +
{{Status|not started}}
 +
 
 +
It would be nice to have bash (or other shell) to launch criu with <code>--restore-sibling</code> option and get new kid processes from it. Right now we workaround it with "[[shell jobs]]".
 +
 
 +
''See also: [[Shell jobs]]''
 +
 
 +
== Other ==
 +
 
 +
=== OpenMPI ===
 
{{Status|stalled}}
 
{{Status|stalled}}
 
* Adrian Reber [https://lisas.de/~adrian/open-mpi.git/ did] first version of patches
 
* Adrian Reber [https://lisas.de/~adrian/open-mpi.git/ did] first version of patches
  
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== Wayland/Weston ==
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=== Subgraph OS ===
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{{Status|under investigation}}
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{{Status|not started}}
 +
 
 +
* [https://subgraph.com/sgos/index.en.html Subgraph OS] is a desktop operation system uses containers for users applications.
 +
 
 +
=== SLURM workload manager ===
 +
{{Status|ready}}
 +
 
 +
* Project homepage [http://slurm.schedmd.com/slurm.html here]
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* Integration code [https://github.com/supermanue/slurm/commits/criuPlugin on the github]
 +
 
 +
=== Wayland/Weston ===
 +
{{Status|stalled}}
 
* Ruslan Kuprieiev plans to [http://lists.openvz.org/pipermail/criu/2015-January/018875.html patch] Weston to let CRIU C/R graphical apps
 
* Ruslan Kuprieiev plans to [http://lists.openvz.org/pipermail/criu/2015-January/018875.html patch] Weston to let CRIU C/R graphical apps
  
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== The <code>file</code> utility ==
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''See also: [[X applications]]
 +
 
 +
=== Systemd ===
 
{{Status|not started}}
 
{{Status|not started}}
−
* Need to reformat the images' header not to contain unique magic values and submit a patch to <code>file</code> tool to identify those.
+
 
 +
Adrian suggested that migrating
 +
processes from one system to another works, depending on the process,
 +
pretty good. Migrating a process under systemd's control might be
 +
possible by just killing the process on the source side but it cannot
 +
become a child process of systemd on the destination of the migration
 +
without systemd knowing how to restore a process and thus making it a
 +
child process of systemd (--restore-sibling).
  
 
[[Category:Plans]]
 
[[Category:Plans]]
 +
[[Category:Development]]

Revision as of 17:30, 29 January 2018

CRIU is not so easy to be used as a standalone tool -- it works best integrated into other software. This page lists such software and provides details about the current status.

Container platforms

Virtuozzo/OpenVZ

Status: ready

As of Virtuozzo/OpenVZ 7, CRIU is fully integrated and supported. Older OpenVZ releases used in-kernel checkpoint/restore functionality, now superseded by CRIU.

LXC/LXD

Status: ready

See also: LXC

Docker

Status: ready

See also: Docker C/R

CoreOS Rocket

Status: not started

Tools and utilities

The file utility

Status: ready

  • Starting from v1.6 new images (v1.1) will be generated
  • File utility starting from 5.23 will support these

Screen/TMUX

Status: stalled

  • Jerome did this some time ago

See also: Screen

Shell

Status: not started

It would be nice to have bash (or other shell) to launch criu with --restore-sibling option and get new kid processes from it. Right now we workaround it with "shell jobs".

See also: Shell jobs

Other

OpenMPI

Status: stalled

  • Adrian Reber did first version of patches

Subgraph OS

Status: not started

  • Subgraph OS is a desktop operation system uses containers for users applications.

SLURM workload manager

Status: ready

Wayland/Weston

Status: stalled

  • Ruslan Kuprieiev plans to patch Weston to let CRIU C/R graphical apps

See also: X applications

Systemd

Status: not started

Adrian suggested that migrating processes from one system to another works, depending on the process, pretty good. Migrating a process under systemd's control might be possible by just killing the process on the source side but it cannot become a child process of systemd on the destination of the migration without systemd knowing how to restore a process and thus making it a child process of systemd (--restore-sibling).

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