// VerifyKVMEnabled makes sure that the host OS is Ubuntu, and that the required
// packages are installed, and that the host CPU is able to support KVM.
func VerifyKVMEnabled() error {
pacman, err := getPackageManager()
if err != nil {
return err
}
if !utils.IsUbuntu() {
return fmt.Errorf(kvmNeedsUbuntu)
}
supported, err := IsKVMSupported()
if err != nil {
// Missing the kvm-ok package.
return fmt.Errorf(needToInstallKVMOk)
}
if !supported {
return fmt.Errorf(kvmNotSupported)
}
// Check for other packages needed.
toInstall := []string{}
for _, pkg := range requiredPackages {
if !pacman.IsInstalled(pkg) {
toInstall = append(toInstall, pkg)
}
}
if len(toInstall) > 0 {
return fmt.Errorf(missingKVMDeps, strings.Join(toInstall, " "))
}
return nil
}
func (s *IsUbuntuSuite) TestIsNotUbuntu(c *gc.C) {
s.patchLsbRelease(c, "Windows NT")
c.Assert(utils.IsUbuntu(), jc.IsFalse)
}
func (s *IsUbuntuSuite) TestIsNotUbuntuLsbReleaseNotFound(c *gc.C) {
if runtime.GOOS != "windows" {
s.patchLsbRelease(c, "exit 127")
}
c.Assert(utils.IsUbuntu(), jc.IsFalse)
}
func (s *IsUbuntuSuite) TestIsUbuntu(c *gc.C) {
s.patchLsbRelease(c, "Ubuntu")
c.Assert(utils.IsUbuntu(), jc.IsTrue)
}
func wrapLxcNotFound(err error) error {
if utils.IsUbuntu() {
return fmt.Errorf("%v\n%s", err, installLxcUbuntu)
}
return fmt.Errorf("%v\n%s", err, installLxcGeneric)
}