gnt-instance list: accept input names

Currently gnt-instance list will refuse to take arguments, and always
return the full list of instances. This patch allows it to pass names to
LUQueryInstances, so that we restrict the input to a given set of
instances.

Reviewed-by: ultrotter

diff --git a/scripts/gnt-instance b/scripts/gnt-instance
index 57091e6..1ee42a3 100755 (executable)
--- a/scripts/gnt-instance
+++ b/scripts/gnt-instance
@@ -214,7 +214,7 @@ def ListInstances(opts, args):
   else:
     selected_fields = opts.output.split(",")
 
-  output = GetClient().QueryInstances([], selected_fields)
+  output = GetClient().QueryInstances(args, selected_fields)
 
   if not opts.no_headers:
     headers = {
@@ -1367,8 +1367,9 @@ commands = {
                         help="Only show configuration data, not runtime data"),
             ], "[-s] [<instance>...]",
            "Show information on the specified instance(s)"),
-  'list': (ListInstances, ARGS_NONE,
-           [DEBUG_OPT, NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT], "",
+  'list': (ListInstances, ARGS_ANY,
+           [DEBUG_OPT, NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT],
+           "[<instance>...]",
            "Lists the instances and their status. The available fields are"
            " (see the man page for details): status, oper_state, oper_ram,"
            " name, os, pnode, snodes, admin_state, admin_ram, disk_template,"