From 95139b786a510a52d4488a57dba068f3e4658c35 Mon Sep 17 00:00:00 2001
From: Stefan Hajnoczi <stefanha@redhat.com>
Date: Wed, 26 Mar 2014 13:05:23 +0100
Subject: [PATCH] qemu-iotests: add ./check -cloop support

Add the cloop block driver to qemu-iotests.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit 47f73da0a7d36e399eaa353d93afce90de9b599d)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 tests/qemu-iotests/common    | 7 +++++++
 tests/qemu-iotests/common.rc | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/tests/qemu-iotests/common b/tests/qemu-iotests/common
index 8cde7f11fa..b5043fcba6 100644
--- a/tests/qemu-iotests/common
+++ b/tests/qemu-iotests/common
@@ -129,6 +129,7 @@ common options
 check options
     -raw                test raw (default)
     -cow                test cow
+    -cloop              test cloop
     -qcow               test qcow
     -qcow2              test qcow2
     -qed                test qed
@@ -167,6 +168,12 @@ testlist options
             xpand=false
             ;;
 
+        -cloop)
+            IMGFMT=cloop
+            IMGFMT_GENERIC=false
+            xpand=false
+            ;;
+
         -qcow)
             IMGFMT=qcow
             xpand=false
diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc
index 7f6245770a..65c5bc118a 100644
--- a/tests/qemu-iotests/common.rc
+++ b/tests/qemu-iotests/common.rc
@@ -350,6 +350,9 @@ _fail()
 #
 _supported_fmt()
 {
+    # "generic" is suitable for most image formats. For some formats it doesn't
+    # work, however (most notably read-only formats), so they can opt out by
+    # setting IMGFMT_GENERIC to false.
     for f; do
         if [ "$f" = "$IMGFMT" -o "$f" = "generic" -a "$IMGFMT_GENERIC" = "true" ]; then
             return