lxc/storage_volume: Parse volume name to name device on attach

This makes it so that even though one specifies the volume as `custom/volume`, the device name will be just `volume. Having this standard looks better and helps handling detaching.

Signed-off-by: hamistao <[email protected]>

lxc/storage_volume.go

@@ -327,7 +327,7 @@ func (c *cmdStorageVolumeAttachProfile) run(cmd *cobra.Command, args []string) e
 	devPath := ""
 	devName := ""
 	if len(args) == 3 {
-		devName = args[1]
+		devName, _ = parseVolume("custom", args[1])
 	} else if len(args) == 4 {
 		// Only the path has been given to us.
 		devPath = args[3]