Exemple #1
0
// Unmounts the bind mount, and detaches the disk only if the PD
// resource was the last reference to that disk on the kubelet.
func (c *awsElasticBlockStoreCleaner) TearDownAt(dir string) error {
	notMnt, err := c.mounter.IsLikelyNotMountPoint(dir)
	if err != nil {
		glog.V(2).Info("Error checking if mountpoint ", dir, ": ", err)
		return err
	}
	if notMnt {
		glog.V(2).Info("Not mountpoint, deleting")
		return os.Remove(dir)
	}

	refs, err := mount.GetMountRefs(c.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 := c.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 {
		// c.volumeID is not initially set for volume-cleaners, so set it here.
		c.volumeID, err = getVolumeIDFromGlobalMount(c.plugin.host, refs[0])
		if err != nil {
			glog.V(2).Info("Could not determine volumeID from mountpoint ", refs[0], ": ", err)
			return err
		}
		if err := c.manager.DetachDisk(&awsElasticBlockStoreCleaner{c.awsElasticBlockStore}); err != nil {
			glog.V(2).Info("Error detaching disk ", c.volumeID, ": ", err)
			return err
		}
	} else {
		glog.V(2).Infof("Found multiple refs; won't detach EBS volume: %v", refs)
	}
	notMnt, mntErr := c.mounter.IsLikelyNotMountPoint(dir)
	if mntErr != nil {
		glog.Errorf("IsLikelyNotMountPoint check failed: %v", mntErr)
		return err
	}
	if notMnt {
		if err := os.Remove(dir); err != nil {
			glog.V(2).Info("Error removing mountpoint ", dir, ": ", err)
			return err
		}
	}
	return nil
}
Exemple #2
0
// utility to tear down a disk based filesystem
func diskTearDown(manager diskManager, c iscsiDiskCleaner, volPath string, mounter mount.Interface) error {
	notMnt, err := mounter.IsLikelyNotMountPoint(volPath)
	if err != nil {
		glog.Errorf("cannot validate mountpoint %s", volPath)
		return err
	}
	if notMnt {
		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(c, mntPath); err != nil {
			glog.Errorf("failed to detach disk from %s", mntPath)
			return err
		}
	}

	notMnt, mntErr := mounter.IsLikelyNotMountPoint(volPath)
	if mntErr != nil {
		glog.Errorf("IsLikelyNotMountPoint check failed: %v", mntErr)
		return err
	}
	if notMnt {
		if err := os.Remove(volPath); err != nil {
			return err
		}
	}
	return nil

}
Exemple #3
0
// Unmounts the bind mount, and detaches the disk only if the PD
// resource was the last reference to that disk on the kubelet.
func (c *gcePersistentDiskCleaner) TearDownAt(dir string) error {
	notMnt, err := c.mounter.IsLikelyNotMountPoint(dir)
	if err != nil {
		return err
	}
	if notMnt {
		return os.Remove(dir)
	}

	refs, err := mount.GetMountRefs(c.mounter, dir)
	if err != nil {
		return err
	}
	// Unmount the bind-mount inside this pod
	if err := c.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 {
		// c.pdName is not initially set for volume-cleaners, so set it here.
		c.pdName = path.Base(refs[0])
		if err := c.manager.DetachDisk(c); err != nil {
			return err
		}
	}
	notMnt, mntErr := c.mounter.IsLikelyNotMountPoint(dir)
	if mntErr != nil {
		glog.Errorf("IsLikelyNotMountPoint check failed: %v", mntErr)
		return err
	}
	if notMnt {
		if err := os.Remove(dir); err != nil {
			return err
		}
	}
	return nil
}
Exemple #4
0
// Unmounts the bind mount, and detaches the disk only if the PD
// resource was the last reference to that disk on the kubelet.
func (c *cinderVolumeCleaner) TearDownAt(dir string) error {
	notmnt, err := c.mounter.IsLikelyNotMountPoint(dir)
	if err != nil {
		return err
	}
	if notmnt {
		return os.Remove(dir)
	}
	refs, err := mount.GetMountRefs(c.mounter, dir)
	if err != nil {
		return err
	}
	if err := c.mounter.Unmount(dir); err != nil {
		return err
	}
	glog.Infof("successfully unmounted: %s\n", dir)

	// If refCount 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 {
		c.pdName = path.Base(refs[0])
		if err := c.manager.DetachDisk(c); err != nil {
			return err
		}
	}
	notmnt, mntErr := c.mounter.IsLikelyNotMountPoint(dir)
	if mntErr != nil {
		glog.Errorf("IsLikelyNotMountPoint check failed: %v", mntErr)
		return err
	}
	if !notmnt {
		if err := os.Remove(dir); err != nil {
			return err
		}
	}
	return nil
}