[Qemu-devel] [PATCH] Fix : Enable qemu-img QED image commit support.

[Onkar N Mahajan]

Running qemu-img commit on QED image gives this message even if the
image is never committed. This patch fixes this. Do we need to do any
L1, L2 table cleanup here ? I see that cleanup code is commented out in
the case of qcow2 (qcow2_make_empty).

before patching - 
# qemu-img commit -f qed ss.qed 
qemu-img: Image is already committed

even before committing the image.

after patching -
# qemu-img commit -f qed ss.qed 
Image committed.

and image is actually successfully committed.
-------------------------------------------------------

Signed-off-by: Onkar N Mahajan/India/IBM
<address@hidden>

---
 block/qed.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/block/qed.c b/block/qed.c
index 6c182ca..32f1d53 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -695,7 +695,7 @@ static int coroutine_fn
bdrv_qed_co_is_allocated(BlockDriverState *bs,
 
 static int bdrv_qed_make_empty(BlockDriverState *bs)
 {
-    return -ENOTSUP;
+    return 0;
 }
 
 static BDRVQEDState *acb_to_s(QEDAIOCB *acb)
-- 
1.7.1

-- 
Onkar N Mahajan
System Software Engineer
IBM Linux Technology Center
Bangalore - India