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756ecd5400
This is an enhancement proposal for the checkpoint / restore feature of Podman that enables container migration across multiple systems with standard image distribution infrastructure. A new option `--create-image <image>` has been added to the `podman container checkpoint` command. This option tells Podman to create a container image. This is a standard image with a single layer, tar archive, that that contains all checkpoint files. This is similar to the current approach with checkpoint `--export`/`--import`. This image can be pushed to a container registry and pulled on a different system. It can also be exported locally with `podman image save` and inspected with `podman inspect`. Inspecting the image would display additional information about the host and the versions of Podman, criu, crun/runc, kernel, etc. `podman container restore` has also been extended to support image name or ID as input. Suggested-by: Adrian Reber <areber@redhat.com> Signed-off-by: Radostin Stoyanov <radostin@redhat.com>
52 lines
1.0 KiB
Go
52 lines
1.0 KiB
Go
//go:build linux
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// +build linux
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package criu
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import (
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"github.com/checkpoint-restore/go-criu/v5"
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"github.com/checkpoint-restore/go-criu/v5/rpc"
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"google.golang.org/protobuf/proto"
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)
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// MinCriuVersion for Podman at least CRIU 3.11 is required
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const MinCriuVersion = 31100
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// PodCriuVersion is the version of CRIU needed for
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// checkpointing and restoring containers out of and into Pods.
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const PodCriuVersion = 31600
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// CheckForCriu uses CRIU's go bindings to check if the CRIU
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// binary exists and if it at least the version Podman needs.
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func CheckForCriu(version int) bool {
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c := criu.MakeCriu()
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result, err := c.IsCriuAtLeast(version)
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if err != nil {
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return false
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}
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return result
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}
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func GetCriuVestion() (int, error) {
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c := criu.MakeCriu()
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return c.GetCriuVersion()
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}
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func MemTrack() bool {
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features, err := criu.MakeCriu().FeatureCheck(
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&rpc.CriuFeatures{
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MemTrack: proto.Bool(true),
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},
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)
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if err != nil {
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return false
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}
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if features == nil || features.MemTrack == nil {
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return false
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}
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return *features.MemTrack
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}
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