36fc33af11
Signed-off-by: Salahuddin Khan <salah@docker.com> (cherry picked from commit 4c8b1fd5a2803e393ad1296692533b7b5c727918) Signed-off-by: Sebastiaan van Stijn <github@gone.nl> Upstream-commit: 37cb9e73006acd13b9708cd594ebc25054fef666 Component: engine
32 lines
773 B
Go
32 lines
773 B
Go
package requirement // import "github.com/docker/docker/integration/internal/requirement"
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import (
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"strings"
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"github.com/docker/docker/pkg/parsers/kernel"
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"gotest.tools/icmd"
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)
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func overlayFSSupported() bool {
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result := icmd.RunCommand("/bin/sh", "-c", "cat /proc/filesystems")
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if result.Error != nil {
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return false
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}
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return strings.Contains(result.Combined(), "overlay\n")
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}
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// Overlay2Supported returns true if the current system supports overlay2 as graphdriver
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func Overlay2Supported(kernelVersion string) bool {
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if !overlayFSSupported() {
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return false
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}
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daemonV, err := kernel.ParseRelease(kernelVersion)
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if err != nil {
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return false
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}
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requiredV := kernel.VersionInfo{Kernel: 4}
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return kernel.CompareKernelVersion(*daemonV, requiredV) > -1
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}
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