// Attach will attach a volume to an instance
func (driver *Driver) Attach(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")
}
_, err = storage.AttachVolume(true, volumes[0].VolumeID, instanceID)
if err != nil {
return "", err
}
volumes, err = storage.GetVolume("", volumeName)
if err != nil {
return "", err
}
return volumes[0].NetworkName, nil
}
if err != nil {
log.Fatal(err)
}
},
}
var attachvolumeCmd = &cobra.Command{
Use: "attach-volume",
Run: func(cmd *cobra.Command, args []string) {
if volumeID == "" {
log.Fatalf("missing --volumeid")
}
volumeAttachment, err := storage.AttachVolume(runAsync, volumeID, instanceID)
if err != nil {
log.Fatal(err)
}
yamlOutput, err := yaml.Marshal(&volumeAttachment)
if err != nil {
log.Fatal(err)
}
fmt.Printf(string(yamlOutput))
},
}
var detachvolumeCmd = &cobra.Command{
Use: "detach-volume",
// 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
}