From: Guido Trotter <ultrotter@google.com>
Date: Wed, 22 May 2013 12:52:32 +0000 (+0200)
Subject: Add debugging clause to _ExpandCheckDisks error
X-Git-Tag: v2.7.0rc2~3
X-Git-Url: https://code.grnet.gr/git/ganeti-local/commitdiff_plain/ae549364c3472728e38d4196f9943a55edc738e2

Add debugging clause to _ExpandCheckDisks error

This has been reported by users, so we should have the extra debugging
available.

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Michele Tartara <mtartara@google.com>
---

diff --git a/lib/cmdlib.py b/lib/cmdlib.py
index 0adf0f1..5c4628e 100644
--- a/lib/cmdlib.py
+++ b/lib/cmdlib.py
@@ -7056,7 +7056,8 @@ def _ExpandCheckDisks(instance, disks):
   else:
     if not set(disks).issubset(instance.disks):
       raise errors.ProgrammerError("Can only act on disks belonging to the"
-                                   " target instance")
+                                   " target instance: expected a subset of %r,"
+                                   " got %r" % (instance.disks, disks))
     return disks