mirror of https://github.com/k3s-io/k3s
74 lines
1.9 KiB
Go
74 lines
1.9 KiB
Go
/*
|
|
Copyright 2017 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.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package flexvolume
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
|
|
"k8s.io/klog"
|
|
"k8s.io/kubernetes/pkg/util/mount"
|
|
"k8s.io/kubernetes/pkg/volume"
|
|
"k8s.io/utils/exec"
|
|
)
|
|
|
|
// FlexVolumeUnmounter is the disk that will be cleaned by this plugin.
|
|
type flexVolumeUnmounter struct {
|
|
*flexVolume
|
|
// Runner used to teardown the volume.
|
|
runner exec.Interface
|
|
}
|
|
|
|
var _ volume.Unmounter = &flexVolumeUnmounter{}
|
|
|
|
// Unmounter interface
|
|
func (f *flexVolumeUnmounter) TearDown() error {
|
|
path := f.GetPath()
|
|
return f.TearDownAt(path)
|
|
}
|
|
|
|
func (f *flexVolumeUnmounter) TearDownAt(dir string) error {
|
|
pathExists, pathErr := mount.PathExists(dir)
|
|
if pathErr != nil {
|
|
// only log warning here since plugins should anyways have to deal with errors
|
|
klog.Warningf("Error checking path: %v", pathErr)
|
|
} else {
|
|
if !pathExists {
|
|
klog.Warningf("Warning: Unmount skipped because path does not exist: %v", dir)
|
|
return nil
|
|
}
|
|
}
|
|
|
|
call := f.plugin.NewDriverCall(unmountCmd)
|
|
call.Append(dir)
|
|
_, err := call.Run()
|
|
if isCmdNotSupportedErr(err) {
|
|
err = (*unmounterDefaults)(f).TearDownAt(dir)
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Flexvolume driver may remove the directory. Ignore if it does.
|
|
if pathExists, pathErr := mount.PathExists(dir); pathErr != nil {
|
|
return fmt.Errorf("Error checking if path exists: %v", pathErr)
|
|
} else if !pathExists {
|
|
return nil
|
|
}
|
|
return os.Remove(dir)
|
|
}
|