[Xen-devel] [PATCH] libxl: prefer qdisk over blktap when choosing disk backend

[Wei Liu <wei.liu2@xxxxxxxxxx>]

There are some disk formats commonly supported by both qdisk and blktap.
As qdisk is better supported and blktap is unmaintained, we choose qdisk
over blktap whenever possible.

Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 tools/libxl/libxl_device.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/libxl/libxl_device.c b/tools/libxl/libxl_device.c
index ea845b7..16a92a4 100644
--- a/tools/libxl/libxl_device.c
+++ b/tools/libxl/libxl_device.c
@@ -288,8 +288,8 @@ int libxl__device_disk_set_backend(libxl__gc *gc, 
libxl_device_disk *disk) {
     } else {
         ok=
             disk_try_backend(&a, LIBXL_DISK_BACKEND_PHY) ?:
-            disk_try_backend(&a, LIBXL_DISK_BACKEND_TAP) ?:
-            disk_try_backend(&a, LIBXL_DISK_BACKEND_QDISK);
+            disk_try_backend(&a, LIBXL_DISK_BACKEND_QDISK) ?:
+            disk_try_backend(&a, LIBXL_DISK_BACKEND_TAP);
         if (ok)
             LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "Disk vdev=%s, using backend %s",
                        disk->vdev,
-- 
1.7.10.4


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