move formatAndMount and diskLooksUnformatted to mount_linux

pkg/util/mount/mount.go

@@ -19,8 +19,6 @@ limitations under the License.
 package mount
 
 import (
-	"strings"
-
 	"github.com/golang/glog"
 	"k8s.io/kubernetes/pkg/util/exec"
 )
@@ -68,54 +66,6 @@ func (mounter *SafeFormatAndMount) Mount(source string, target string, fstype st
 	return mounter.formatAndMount(source, target, fstype, options)
 }
 
-// formatAndMount uses unix utils to format and mount the given disk
-func (mounter *SafeFormatAndMount) formatAndMount(source string, target string, fstype string, options []string) error {
-	options = append(options, "defaults")
-
-	// Try to mount the disk
-	err := mounter.Interface.Mount(source, target, fstype, options)
-	if err != nil {
-		// It is possible that this disk is not formatted. Double check using diskLooksUnformatted
-		notFormatted, err := mounter.diskLooksUnformatted(source)
-		if err == nil && notFormatted {
-			args := []string{source}
-			// Disk is unformatted so format it.
-			// Use 'ext4' as the default
-			if len(fstype) == 0 {
-				fstype = "ext4"
-			}
-			if fstype == "ext4" || fstype == "ext3" {
-				args = []string{"-E", "lazy_itable_init=0,lazy_journal_init=0", "-F", source}
-			}
-			cmd := mounter.Runner.Command("mkfs."+fstype, args...)
-			_, err := cmd.CombinedOutput()
-			if err == nil {
-				// the disk has been formatted sucessfully try to mount it again.
-				return mounter.Interface.Mount(source, target, fstype, options)
-			}
-			return err
-		}
-	}
-	return err
-}
-
-// diskLooksUnformatted uses 'lsblk' to see if the given disk is unformated
-func (mounter *SafeFormatAndMount) diskLooksUnformatted(disk string) (bool, error) {
-	args := []string{"-nd", "-o", "FSTYPE", disk}
-	cmd := mounter.Runner.Command("lsblk", args...)
-	dataOut, err := cmd.CombinedOutput()
-	output := strings.TrimSpace(string(dataOut))
-
-	// TODO (#13212): check if this disk has partitions and return false, and
-	// an error if so.
-
-	if err != nil {
-		return false, err
-	}
-
-	return output == "", nil
-}
-
 // New returns a mount.Interface for the current system.
 func New() Interface {
 	return &Mounter{}

pkg/util/mount/mount_linux.go

@@ -235,3 +235,51 @@ func readProcMountsFrom(file io.Reader, out *[]MountPoint) (uint32, error) {
 	}
 	return hash.Sum32(), nil
 }
+
+// formatAndMount uses unix utils to format and mount the given disk
+func (mounter *SafeFormatAndMount) formatAndMount(source string, target string, fstype string, options []string) error {
+	options = append(options, "defaults")
+
+	// Try to mount the disk
+	err := mounter.Interface.Mount(source, target, fstype, options)
+	if err != nil {
+		// It is possible that this disk is not formatted. Double check using diskLooksUnformatted
+		notFormatted, err := mounter.diskLooksUnformatted(source)
+		if err == nil && notFormatted {
+			args := []string{source}
+			// Disk is unformatted so format it.
+			// Use 'ext4' as the default
+			if len(fstype) == 0 {
+				fstype = "ext4"
+			}
+			if fstype == "ext4" || fstype == "ext3" {
+				args = []string{"-E", "lazy_itable_init=0,lazy_journal_init=0", "-F", source}
+			}
+			cmd := mounter.Runner.Command("mkfs."+fstype, args...)
+			_, err := cmd.CombinedOutput()
+			if err == nil {
+				// the disk has been formatted sucessfully try to mount it again.
+				return mounter.Interface.Mount(source, target, fstype, options)
+			}
+			return err
+		}
+	}
+	return err
+}
+
+// diskLooksUnformatted uses 'lsblk' to see if the given disk is unformated
+func (mounter *SafeFormatAndMount) diskLooksUnformatted(disk string) (bool, error) {
+	args := []string{"-nd", "-o", "FSTYPE", disk}
+	cmd := mounter.Runner.Command("lsblk", args...)
+	dataOut, err := cmd.CombinedOutput()
+	output := strings.TrimSpace(string(dataOut))
+
+	// TODO (#13212): check if this disk has partitions and return false, and
+	// an error if so.
+
+	if err != nil {
+		return false, err
+	}
+
+	return output == "", nil
+}

pkg/util/mount/mount_unsupported.go

@@ -35,3 +35,11 @@ func (mounter *Mounter) List() ([]MountPoint, error) {
 func (mounter *Mounter) IsLikelyNotMountPoint(file string) (bool, error) {
 	return true, nil
 }
+
+func (mounter *SafeFormatAndMount) formatAndMount(source string, target string, fstype string, options []string) error {
+	return nil
+}
+
+func (mounter *SafeFormatAndMount) diskLooksUnformatted(disk string) (bool, error) {
+	return true, nil
+}