[Qemu-devel] [PATCH v3 3/6] qemu-iotests: Add _supported_cache_modes

[Fam Zheng <famz@redhat.com>]

This replaces _unsupported_qemu_io_options and check for support of
current cache mode.

If user dosen't give "-c <mode>" or "-nocache", the first supported
cache mode is used in qemu-io.

Signed-off-by: Fam Zheng <famz@redhat.com>
---
 tests/qemu-iotests/026       |  2 +-
 tests/qemu-iotests/039       |  2 +-
 tests/qemu-iotests/052       |  3 +--
 tests/qemu-iotests/common.rc | 20 ++++++++++----------
 4 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/tests/qemu-iotests/026 b/tests/qemu-iotests/026
index ebe29d0..9078cd8 100755
--- a/tests/qemu-iotests/026
+++ b/tests/qemu-iotests/026
@@ -44,7 +44,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt qcow2
 _supported_proto generic
 _supported_os Linux
-
+_supported_cache_modes "writethrough" "none"
 
 echo "Errors while writing 128 kB"
 echo
diff --git a/tests/qemu-iotests/039 b/tests/qemu-iotests/039
index 8bade92..a298b50 100755
--- a/tests/qemu-iotests/039
+++ b/tests/qemu-iotests/039
@@ -44,7 +44,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt qcow2
 _supported_proto generic
 _supported_os Linux
-_unsupported_qemu_io_options --nocache
+_supported_cache_modes "writethrough"
 
 size=128M
 
diff --git a/tests/qemu-iotests/052 b/tests/qemu-iotests/052
index f5f9683..6d96c99 100755
--- a/tests/qemu-iotests/052
+++ b/tests/qemu-iotests/052
@@ -41,8 +41,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt generic
 _supported_proto generic
 _supported_os Linux
-_unsupported_qemu_io_options --nocache
-
+_supported_cache_modes "writethrough"
 
 size=128M
 _make_test_img $size
diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc
index 7f62457..15d5bbd 100644
--- a/tests/qemu-iotests/common.rc
+++ b/tests/qemu-iotests/common.rc
@@ -387,18 +387,18 @@ _supported_os()
     _notrun "not suitable for this OS: $HOSTOS"
 }
 
-_unsupported_qemu_io_options()
+_supported_cache_modes()
 {
-    for bad_opt
-    do
-        for opt in $QEMU_IO_OPTIONS
-        do
-            if [ "$bad_opt" = "$opt" ]
-            then
-                _notrun "not suitable for qemu-io option: $bad_opt"
-            fi
-        done
+    if $CACHEMODE_IS_DEFAULT; then
+        QEMU_IO="$QEMU_IO -t $1"
+        return
+    fi
+    for mode; do
+        if [ "$mode" = "$CACHEMODE" ]; then
+            return
+        fi
     done
+    _notrun "not suitable for cache mode: $CACHEMODE"
 }
 
 # this test requires that a specified command (executable) exists
-- 
1.8.4.2