Esempio n. 1
0
// NetworkName will return relevant information about how a volume can be discovered on an OS
func (driver *Driver) NetworkName(volumeName, instanceID string) (string, error) {
	volumes, err := storage.GetVolume("", volumeName)
	if err != nil {
		return "", err
	}

	switch {
	case len(volumes) == 0:
		return "", errors.New("No volumes returned by name")
	case len(volumes) > 1:
		return "", errors.New("Multiple volumes returned by name")
	}

	volumeAttachment, err := storage.GetVolumeAttach(volumes[0].VolumeID, instanceID)
	if err != nil {
		return "", err
	}

	if len(volumeAttachment) == 0 {
		return "", errors.New("Volume not attached")
	}

	volumes, err = storage.GetVolume("", volumeName)
	if err != nil {
		return "", err
	}

	return volumes[0].NetworkName, nil
}
Esempio n. 2
0
// Unmount will perform the steps to unmount and existing volume and detach
func (driver *Driver) Unmount(volumeName, volumeID string) error {
	if volumeName == "" && volumeID == "" {
		return errors.New("Missing volume name or ID")
	}

	instances, err := storage.GetInstance()
	if err != nil {
		return err
	}

	switch {
	case len(instances) == 0:
		return errors.New("No instances")
	case len(instances) > 1:
		return errors.New("Too many instances returned, limit the storagedrivers")
	}

	volumes, err := storage.GetVolume(volumeID, volumeName)
	if err != nil {
		return err
	}

	switch {
	case len(volumes) == 0:
		return errors.New("No volumes returned by name")
	case len(volumes) > 1:
		return errors.New("Multiple volumes returned by name")
	}

	volumeAttachment, err := storage.GetVolumeAttach(volumes[0].VolumeID, instances[0].InstanceID)
	if err != nil {
		return err
	}

	if len(volumeAttachment) == 0 {
		return nil
	}

	mounts, err := rros.GetMounts(volumeAttachment[0].DeviceName, "")
	if err != nil {
		return err
	}

	if len(mounts) == 0 {
		return nil
	}

	err = rros.Unmount(mounts[0].Mountpoint)
	if err != nil {
		return err
	}

	err = storage.DetachVolume(false, volumes[0].VolumeID, "")
	if err != nil {
		return err
	}
	return nil

}
Esempio n. 3
0
// Mount will perform the steps to get an existing Volume with or without a fileystem mounted to a guest
func (driver *Driver) Mount(volumeName, volumeID string, overwriteFs bool, newFsType string) (string, error) {
	if volumeName == "" && volumeID == "" {
		return "", errors.New("Missing volume name or ID")
	}

	instances, err := storage.GetInstance()
	if err != nil {
		return "", err
	}

	switch {
	case len(instances) == 0:
		return "", errors.New("No instances")
	case len(instances) > 1:
		return "", errors.New("Too many instances returned, limit the storagedrivers")
	}

	volumes, err := storage.GetVolume(volumeID, volumeName)
	if err != nil {
		return "", err
	}

	switch {
	case len(volumes) == 0:
		return "", errors.New("No volumes returned by name")
	case len(volumes) > 1:
		return "", errors.New("Multiple volumes returned by name")
	}

	volumeAttachment, err := storage.GetVolumeAttach(volumes[0].VolumeID, instances[0].InstanceID)
	if err != nil {
		return "", err
	}

	if len(volumeAttachment) == 0 {
		volumeAttachment, err = storage.AttachVolume(false, volumes[0].VolumeID, instances[0].InstanceID)
		if err != nil {
			return "", err
		}
	}

	if len(volumeAttachment) == 0 {
		return "", errors.New("Volume did not attach")
	}

	mounts, err := rros.GetMounts(volumeAttachment[0].DeviceName, "")
	if err != nil {
		return "", err
	}

	if len(mounts) > 0 {
		return mounts[0].Mountpoint, nil
	}

	switch {
	case os.Getenv("REXRAY_DOCKER_VOLUMETYPE") != "":
		newFsType = os.Getenv("REXRAY_DOCKER_VOLUMETYPE")
	case newFsType == "":
		newFsType = "ext4"
	}

	if err := rros.Format(volumeAttachment[0].DeviceName, newFsType, overwriteFs); err != nil {
		return "", err
	}

	mountPath, err := getVolumeMountPath(volumes[0].Name)
	if err != nil {
		return "", err
	}

	if err := os.MkdirAll(mountPath, 0755); err != nil {
		return "", err
	}

	if err := rros.Mount(volumeAttachment[0].DeviceName, mountPath, "", ""); err != nil {
		return "", err
	}

	return mountPath, nil
}