diff --git a/lib/cli.py b/lib/cli.py
index 0ff5b435ec20a70de445f56b7c358d628655e121..949903f18cef54f959bdf8dc3d3ec74d0a68e23c 100644
--- a/lib/cli.py
+++ b/lib/cli.py
@@ -50,6 +50,7 @@ __all__ = [
   "DISK_TEMPLATE_OPT",
   "FIELDS_OPT",
   "FILESTORE_DIR_OPT",
+  "FILESTORE_DRIVER_OPT",
   "FORCE_OPT",
   "NOHDR_OPT",
   "NONICS_OPT",
@@ -493,6 +494,11 @@ FILESTORE_DIR_OPT = cli_option("--file-storage-dir", dest="file_storage_dir",
                                " file storage dir to store file-based disks",
                                default=None, metavar="<DIR>")
 
+FILESTORE_DRIVER_OPT = cli_option("--file-driver", dest="file_driver",
+                                  help="Driver to use for image files",
+                                  default="loop", metavar="<DRIVER>",
+                                  choices=list(constants.FILE_DRIVER))
+
 
 def _ParseArgs(argv, commands, aliases):
   """Parser for the command line arguments.
diff --git a/scripts/gnt-backup b/scripts/gnt-backup
index 2f030e5e86640171027d1ebc96f6dd10e216303a..d1591329b29b275151ce7f111b3770cb5e7e88c7 100755
--- a/scripts/gnt-backup
+++ b/scripts/gnt-backup
@@ -246,9 +246,7 @@ import_opts = [
              " <NAME> iallocator plugin", default=None, type="string",
              completion_suggest=OPT_COMPL_ONE_IALLOCATOR),
   FILESTORE_DIR_OPT,
-  cli_option("--file-driver", dest="file_driver", help="Driver to use"
-             " for image files", default="loop", metavar="<DRIVER>",
-             choices=list(constants.FILE_DRIVER)),
+  FILESTORE_DRIVER_OPT,
   cli_option("-H", "--hypervisor", dest="hypervisor",
              help="Hypervisor and hypervisor options, in the format"
              " hypervisor:option=value,option=value,...", default=None,
diff --git a/scripts/gnt-instance b/scripts/gnt-instance
index 2598a7aa0c16d8ebfccb7513fc291fe7088f5455..321bf207e68f059d95a02e397c5d90a4cfcf3d51 100755
--- a/scripts/gnt-instance
+++ b/scripts/gnt-instance
@@ -1397,9 +1397,7 @@ add_opts = [
              action="store_false", help="Don't check that the instance's IP"
              " is alive (only valid with --no-start)"),
   FILESTORE_DIR_OPT,
-  cli_option("--file-driver", dest="file_driver", help="Driver to use"
-             " for image files", default="loop", metavar="<DRIVER>",
-             choices=list(constants.FILE_DRIVER)),
+  FILESTORE_DRIVER_OPT,
   cli_option("-I", "--iallocator", metavar="<NAME>",
              help="Select nodes for the instance automatically using the"
              " <NAME> iallocator plugin", default=None, type="string",