// Unmounts the bind mount, and detaches the disk only if the PD
// resource was the last reference to that disk on the qinglet.
func (pd *awsElasticBlockStore) TearDownAt(dir string) error {
mountpoint, err := pd.mounter.IsMountPoint(dir)
if err != nil {
glog.V(2).Info("Error checking if mountpoint ", dir, ": ", err)
return err
}
if !mountpoint {
glog.V(2).Info("Not mountpoint, deleting")
return os.Remove(dir)
}
refs, err := mount.GetMountRefs(pd.mounter, dir)
if err != nil {
glog.V(2).Info("Error getting mountrefs for ", dir, ": ", err)
return err
}
if len(refs) == 0 {
glog.Warning("Did not find pod-mount for ", dir, " during tear-down")
}
// Unmount the bind-mount inside this pod
if err := pd.mounter.Unmount(dir); err != nil {
glog.V(2).Info("Error unmounting dir ", dir, ": ", err)
return err
}
// If len(refs) is 1, then all bind mounts have been removed, and the
// remaining reference is the global mount. It is safe to detach.
if len(refs) == 1 {
// pd.volumeID is not initially set for volume-cleaners, so set it here.
pd.volumeID, err = getVolumeIDFromGlobalMount(pd.plugin.host, refs[0])
if err != nil {
glog.V(2).Info("Could not determine volumeID from mountpoint ", refs[0], ": ", err)
return err
}
if err := pd.manager.DetachDisk(pd); err != nil {
glog.V(2).Info("Error detaching disk ", pd.volumeID, ": ", err)
return err
}
} else {
glog.V(2).Infof("Found multiple refs; won't detach EBS volume: %v", refs)
}
mountpoint, mntErr := pd.mounter.IsMountPoint(dir)
if mntErr != nil {
glog.Errorf("isMountpoint check failed: %v", mntErr)
return err
}
if !mountpoint {
if err := os.Remove(dir); err != nil {
glog.V(2).Info("Error removing mountpoint ", dir, ": ", err)
return err
}
}
return nil
}
// utility to tear down a disk based filesystem
func diskTearDown(manager diskManager, disk iscsiDisk, volPath string, mounter mount.Interface) error {
mountpoint, err := mounter.IsMountPoint(volPath)
if err != nil {
glog.Errorf("cannot validate mountpoint %s", volPath)
return err
}
if !mountpoint {
return os.Remove(volPath)
}
refs, err := mount.GetMountRefs(mounter, volPath)
if err != nil {
glog.Errorf("failed to get reference count %s", volPath)
return err
}
if err := mounter.Unmount(volPath); err != nil {
glog.Errorf("failed to unmount %s", volPath)
return err
}
// If len(refs) is 1, then all bind mounts have been removed, and the
// remaining reference is the global mount. It is safe to detach.
if len(refs) == 1 {
mntPath := refs[0]
if err := manager.DetachDisk(disk, mntPath); err != nil {
glog.Errorf("failed to detach disk from %s", mntPath)
return err
}
}
mountpoint, mntErr := mounter.IsMountPoint(volPath)
if mntErr != nil {
glog.Errorf("isMountpoint check failed: %v", mntErr)
return err
}
if !mountpoint {
if err := os.Remove(volPath); err != nil {
return err
}
}
return nil
}
// Unmounts the bind mount, and detaches the disk only if the PD
// resource was the last reference to that disk on the qinglet.
func (pd *gcePersistentDisk) TearDownAt(dir string) error {
mountpoint, err := pd.mounter.IsMountPoint(dir)
if err != nil {
return err
}
if !mountpoint {
return os.Remove(dir)
}
refs, err := mount.GetMountRefs(pd.mounter, dir)
if err != nil {
return err
}
// Unmount the bind-mount inside this pod
if err := pd.mounter.Unmount(dir); err != nil {
return err
}
// If len(refs) is 1, then all bind mounts have been removed, and the
// remaining reference is the global mount. It is safe to detach.
if len(refs) == 1 {
// pd.pdName is not initially set for volume-cleaners, so set it here.
pd.pdName = path.Base(refs[0])
if err := pd.manager.DetachDisk(pd); err != nil {
return err
}
}
mountpoint, mntErr := pd.mounter.IsMountPoint(dir)
if mntErr != nil {
glog.Errorf("isMountpoint check failed: %v", mntErr)
return err
}
if !mountpoint {
if err := os.Remove(dir); err != nil {
return err
}
}
return nil
}