// 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 }
// 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 }
// 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 }
// 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 }