// getPodVolumePathListFromDisk returns a list of the volume paths by reading the
// volume directories for the given pod from the disk.
func (kl *Kubelet) getPodVolumePathListFromDisk(podUID types.UID) ([]string, error) {
volumes := []string{}
podVolDir := kl.getPodVolumesDir(podUID)
if pathExists, pathErr := volumeutil.PathExists(podVolDir); pathErr != nil {
return volumes, fmt.Errorf("Error checking if path %q exists: %v", podVolDir, pathErr)
} else if !pathExists {
glog.Warningf("Warning: path %q does not exist: %q", podVolDir)
return volumes, nil
}
volumePluginDirs, err := ioutil.ReadDir(podVolDir)
if err != nil {
glog.Errorf("Could not read directory %s: %v", podVolDir, err)
return volumes, err
}
for _, volumePluginDir := range volumePluginDirs {
volumePluginName := volumePluginDir.Name()
volumePluginPath := path.Join(podVolDir, volumePluginName)
volumeDirs, err := util.ReadDirNoStat(volumePluginPath)
if err != nil {
return volumes, fmt.Errorf("Could not read directory %s: %v", volumePluginPath, err)
}
for _, volumeDir := range volumeDirs {
volumes = append(volumes, path.Join(volumePluginPath, volumeDir))
}
}
return volumes, nil
}
// getVolumesFromPodDir scans through the volumes directories under the given pod directory.
// It returns a list of pod volume information including pod's uid, volume's plugin name, mount path,
// and volume spec name.
func getVolumesFromPodDir(podDir string) ([]podVolume, error) {
podsDirInfo, err := ioutil.ReadDir(podDir)
if err != nil {
return nil, err
}
volumes := []podVolume{}
for i := range podsDirInfo {
if !podsDirInfo[i].IsDir() {
continue
}
podName := podsDirInfo[i].Name()
podDir := path.Join(podDir, podName)
volumesDir := path.Join(podDir, options.DefaultKubeletVolumesDirName)
volumesDirInfo, err := ioutil.ReadDir(volumesDir)
if err != nil {
glog.Errorf("Could not read volume directory %q: %v", volumesDir, err)
continue
}
for _, volumeDir := range volumesDirInfo {
pluginName := volumeDir.Name()
volumePluginPath := path.Join(volumesDir, pluginName)
volumePluginDirs, err := util.ReadDirNoStat(volumePluginPath)
if err != nil {
glog.Errorf("Could not read volume plugin directory %q: %v", volumePluginPath, err)
continue
}
unescapePluginName := strings.UnescapeQualifiedNameForDisk(pluginName)
for _, volumeName := range volumePluginDirs {
mountPath := path.Join(volumePluginPath, volumeName)
volumes = append(volumes, podVolume{
podName: volumetypes.UniquePodName(podName),
volumeSpecName: volumeName,
mountPath: mountPath,
pluginName: unescapePluginName,
})
}
}
}
glog.V(10).Infof("Get volumes from pod directory %q %+v", podDir, volumes)
return volumes, nil
}
// getPodVolumeNameListFromDisk returns a list of the volume names by reading the
// volume directories for the given pod from the disk.
func (kl *Kubelet) getPodVolumeNameListFromDisk(podUID types.UID) ([]string, error) {
volumes := []string{}
podVolDir := kl.getPodVolumesDir(podUID)
volumePluginDirs, err := ioutil.ReadDir(podVolDir)
if err != nil {
glog.Errorf("Could not read directory %s: %v", podVolDir, err)
return volumes, err
}
for _, volumePluginDir := range volumePluginDirs {
volumePluginName := volumePluginDir.Name()
volumePluginPath := path.Join(podVolDir, volumePluginName)
volumeDirs, err := util.ReadDirNoStat(volumePluginPath)
if err != nil {
return volumes, err
}
volumes = append(volumes, volumeDirs...)
}
return volumes, nil
}