Storage: move filesystem resize code to kubernetes/mount-utils

pkg/util/BUILD

@@ -36,7 +36,6 @@ filegroup(
         "//pkg/util/pod:all-srcs",
         "//pkg/util/procfs:all-srcs",
         "//pkg/util/removeall:all-srcs",
-        "//pkg/util/resizefs:all-srcs",
         "//pkg/util/rlimit:all-srcs",
         "//pkg/util/selinux:all-srcs",
         "//pkg/util/slice:all-srcs",

pkg/volume/util/BUILD

@@ -24,7 +24,6 @@ go_library(
         "//pkg/apis/core/v1/helper:go_default_library",
         "//pkg/features:go_default_library",
         "//pkg/securitycontext:go_default_library",
-        "//pkg/util/resizefs:go_default_library",
         "//pkg/volume:go_default_library",
         "//pkg/volume/util/types:go_default_library",
         "//pkg/volume/util/volumepathhandler:go_default_library",

pkg/volume/util/resize_util.go

@@ -21,8 +21,6 @@ import (
 	"encoding/json"
 	"fmt"
 
-	"k8s.io/mount-utils"
-
 	"k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/meta"
 	"k8s.io/apimachinery/pkg/api/resource"
@@ -31,9 +29,9 @@ import (
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/strategicpatch"
 	clientset "k8s.io/client-go/kubernetes"
-	"k8s.io/kubernetes/pkg/util/resizefs"
 	"k8s.io/kubernetes/pkg/volume"
 	volumetypes "k8s.io/kubernetes/pkg/volume/util/types"
+	"k8s.io/mount-utils"
 )
 
 var (
@@ -266,11 +264,6 @@ func MergeResizeConditionOnPVC(
 
 // GenericResizeFS : call generic filesystem resizer for plugins that don't have any special filesystem resize requirements
 func GenericResizeFS(host volume.VolumeHost, pluginName, devicePath, deviceMountPath string) (bool, error) {
-	mounter := host.GetMounter(pluginName)
-	diskFormatter := &mount.SafeFormatAndMount{
-		Interface: mounter,
-		Exec:      host.GetExec(pluginName),
-	}
-	resizer := resizefs.NewResizeFs(diskFormatter)
+	resizer := mount.NewResizeFs(host.GetExec(pluginName))
 	return resizer.Resize(devicePath, deviceMountPath)
 }

staging/src/k8s.io/mount-utils/BUILD

@@ -12,6 +12,8 @@ go_library(
         "mount_linux.go",
         "mount_unsupported.go",
         "mount_windows.go",
+        "resizefs_linux.go",
+        "resizefs_unsupported.go",
     ],
     importmap = "k8s.io/kubernetes/vendor/k8s.io/mount-utils",
     importpath = "k8s.io/mount-utils",

staging/src/k8s.io/mount-utils/mount_linux.go

@@ -441,11 +441,10 @@ func (mounter *SafeFormatAndMount) formatAndMountSensitive(source string, target
 	return nil
 }
 
-// GetDiskFormat uses 'blkid' to see if the given disk is unformatted
-func (mounter *SafeFormatAndMount) GetDiskFormat(disk string) (string, error) {
+func getDiskFormat(exec utilexec.Interface, disk string) (string, error) {
 	args := []string{"-p", "-s", "TYPE", "-s", "PTTYPE", "-o", "export", disk}
 	klog.V(4).Infof("Attempting to determine if disk %q is formatted using blkid with args: (%v)", disk, args)
-	dataOut, err := mounter.Exec.Command("blkid", args...).CombinedOutput()
+	dataOut, err := exec.Command("blkid", args...).CombinedOutput()
 	output := string(dataOut)
 	klog.V(4).Infof("Output: %q", output)
 
@@ -494,6 +493,11 @@ func (mounter *SafeFormatAndMount) GetDiskFormat(disk string) (string, error) {
 	return fstype, nil
 }
 
+// GetDiskFormat uses 'blkid' to see if the given disk is unformatted
+func (mounter *SafeFormatAndMount) GetDiskFormat(disk string) (string, error) {
+	return getDiskFormat(mounter.Exec, disk)
+}
+
 // ListProcMounts is shared with NsEnterMounter
 func ListProcMounts(mountFilePath string) ([]MountPoint, error) {
 	content, err := utilio.ConsistentRead(mountFilePath, maxListTries)

pkg/util/resizefs/resizefs_linux.go → staging/src/k8s.io/mount-utils/resizefs_linux.go

@@ -1,7 +1,7 @@
 // +build linux
 
 /*
-Copyright 2017 The Kubernetes Authors.
+Copyright 2021 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,28 +16,28 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package resizefs
+package mount
 
 import (
 	"fmt"
 
 	"k8s.io/klog/v2"
-	"k8s.io/mount-utils"
+	utilexec "k8s.io/utils/exec"
 )
 
 // ResizeFs Provides support for resizing file systems
 type ResizeFs struct {
-	mounter *mount.SafeFormatAndMount
+	exec utilexec.Interface
 }
 
 // NewResizeFs returns new instance of resizer
-func NewResizeFs(mounter *mount.SafeFormatAndMount) *ResizeFs {
-	return &ResizeFs{mounter: mounter}
+func NewResizeFs(exec utilexec.Interface) *ResizeFs {
+	return &ResizeFs{exec: exec}
 }
 
 // Resize perform resize of file system
 func (resizefs *ResizeFs) Resize(devicePath string, deviceMountPath string) (bool, error) {
-	format, err := resizefs.mounter.GetDiskFormat(devicePath)
+	format, err := getDiskFormat(resizefs.exec, devicePath)
 
 	if err != nil {
 		formatErr := fmt.Errorf("ResizeFS.Resize - error checking format for device %s: %v", devicePath, err)
@@ -61,7 +61,7 @@ func (resizefs *ResizeFs) Resize(devicePath string, deviceMountPath string) (boo
 }
 
 func (resizefs *ResizeFs) extResize(devicePath string) (bool, error) {
-	output, err := resizefs.mounter.Exec.Command("resize2fs", devicePath).CombinedOutput()
+	output, err := resizefs.exec.Command("resize2fs", devicePath).CombinedOutput()
 	if err == nil {
 		klog.V(2).Infof("Device %s resized successfully", devicePath)
 		return true, nil
@@ -74,7 +74,7 @@ func (resizefs *ResizeFs) extResize(devicePath string) (bool, error) {
 
 func (resizefs *ResizeFs) xfsResize(deviceMountPath string) (bool, error) {
 	args := []string{"-d", deviceMountPath}
-	output, err := resizefs.mounter.Exec.Command("xfs_growfs", args...).CombinedOutput()
+	output, err := resizefs.exec.Command("xfs_growfs", args...).CombinedOutput()
 
 	if err == nil {
 		klog.V(2).Infof("Device %s resized successfully", deviceMountPath)

pkg/util/resizefs/resizefs_unsupported.go → staging/src/k8s.io/mount-utils/resizefs_unsupported.go

@@ -1,7 +1,7 @@
 // +build !linux
 
 /*
-Copyright 2017 The Kubernetes Authors.
+Copyright 2021 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,22 +16,22 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package resizefs
+package mount
 
 import (
 	"fmt"
 
-	"k8s.io/mount-utils"
+	utilexec "k8s.io/utils/exec"
 )
 
 // ResizeFs Provides support for resizing file systems
 type ResizeFs struct {
-	mounter *mount.SafeFormatAndMount
+	exec utilexec.Interface
 }
 
 // NewResizeFs returns new instance of resizer
-func NewResizeFs(mounter *mount.SafeFormatAndMount) *ResizeFs {
-	return &ResizeFs{mounter: mounter}
+func NewResizeFs(exec utilexec.Interface) *ResizeFs {
+	return &ResizeFs{exec: exec}
 }
 
 // Resize perform resize of file system