func overlay2Supported() bool {
if !overlayFSSupported() {
return false
}
daemonV, err := kernel.ParseRelease(daemonKernelVersion)
if err != nil {
return false
}
requiredV := kernel.VersionInfo{Kernel: 4}
return kernel.CompareKernelVersion(*daemonV, requiredV) > -1
}
cmd := exec.Command(dockerBinary, "run", "--rm", "busybox", "/bin/sh", "-c", "cat /proc/filesystems")
out, err := cmd.CombinedOutput()
if err != nil {
return false
}
return bytes.Contains(out, []byte("overlay\n"))
},
"Test cannot be run without suppport for overlayfs",
}
overlay2Supported = testRequirement{
func() bool {
if !overlayFSSupported.Condition() {
return false
}
daemonV, err := kernel.ParseRelease(daemonKernelVersion)
if err != nil {
return false
}
requiredV := kernel.VersionInfo{Kernel: 4}
return kernel.CompareKernelVersion(*daemonV, requiredV) > -1
},
"Test cannot be run without overlay2 support (kernel 4.0+)",
}
)
func init() {
SysInfo = sysinfo.New(true)
}