func (util *RBDUtil) DetachDisk(c rbdUnmounter, mntPath string) error {
device, cnt, err := mount.GetDeviceNameFromMount(c.mounter, mntPath)
if err != nil {
return fmt.Errorf("rbd detach disk: failed to get device from mnt: %s\nError: %v", mntPath, err)
}
if err = c.mounter.Unmount(mntPath); err != nil {
return fmt.Errorf("rbd detach disk: failed to umount: %s\nError: %v", mntPath, err)
}
// if device is no longer used, see if can unmap
if cnt <= 1 {
// rbd unmap
_, err = c.plugin.execCommand("rbd", []string{"unmap", device})
if err != nil {
return fmt.Errorf("rbd: failed to unmap device %s:Error: %v", device, err)
}
// load ceph and image/pool info to remove fencing
if err := util.loadRBD(c.rbdMounter, mntPath); err == nil {
// remove rbd lock
util.defencing(c)
}
glog.Infof("rbd: successfully unmap device %s", device)
}
return nil
}
// TearDownAt simply deletes everything in the directory.
func (f *flexVolumeUnmounter) TearDownAt(dir string) error {
notmnt, err := f.mounter.IsLikelyNotMountPoint(dir)
if err != nil {
glog.Errorf("Error checking mount point %s, error: %v", dir, err)
return err
}
if notmnt {
return os.Remove(dir)
}
device, refCount, err := mount.GetDeviceNameFromMount(f.mounter, dir)
if err != nil {
glog.Errorf("Failed to get reference count for volume: %s", dir)
return err
}
if err := f.manager.unmount(f, dir); err != nil {
if !isCmdNotSupportedErr(err) {
glog.Errorf("Failed to unmount volume %s", f.volName)
return err
}
// Unmount not supported by the driver. Use core unmount logic.
if err := f.mounter.Unmount(dir); err != nil {
glog.Errorf("Failed to unmount volume: %s, error: %s", dir, err.Error())
return err
}
}
if refCount == 1 {
if err := f.manager.detach(f, device); err != nil {
if !isCmdNotSupportedErr(err) {
glog.Errorf("Failed to teardown volume: %s, error: %s", dir, err.Error())
return err
}
// Teardown not supported by driver. Unmount is good enough.
}
}
notmnt, err = f.mounter.IsLikelyNotMountPoint(dir)
if err != nil {
glog.Errorf("Error checking mount point %s, error: %v", dir, err)
return err
}
if notmnt {
return os.Remove(dir)
}
return nil
}