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d669dbfb9f
CRIU's pre-copy migration support relies on the soft dirty page tracking in the Linux kernel: https://www.kernel.org/doc/Documentation/vm/soft-dirty.txt This functionality is not implemented for all architectures and it can also be turned off in the kernel. CRIU can check if the combination of architecture/kernel/CRIU supports the soft dirty page tracking and exports this feature checking functionality in go-criu. This commit adds an early check if the user selects pre-copy checkpointing to error out if the system does not support it. Signed-off-by: Adrian Reber <areber@redhat.com>
46 lines
950 B
Go
46 lines
950 B
Go
// +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 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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