[PATCH v3 2/2] block: qcow2: remove the created file on initialization error

[Maxim Levitsky <mlevitsk@redhat.com>]

If the qcow initialization fails, we should remove the file if it was
already created, to avoid leaving stale files around.

We already do this for luks raw images.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
---
 block/qcow2.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/block/qcow2.c b/block/qcow2.c
index 3a90ef2786..3bc2096b72 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3848,6 +3848,19 @@ static int coroutine_fn qcow2_co_create_opts(BlockDriver *drv,
     /* Create the qcow2 image (format layer) */
     ret = qcow2_co_create(create_options, errp);
     if (ret < 0) {
+
+        Error *local_delete_err = NULL;
+        int r_del = bdrv_co_delete_file(bs, &local_delete_err);
+        /*
+         * ENOTSUP will happen if the block driver doesn't support
+         * the 'bdrv_co_delete_file' interface. This is a predictable
+         * scenario and shouldn't be reported back to the user.
+         */
+        if ((r_del < 0) && (r_del != -ENOTSUP)) {
+            error_report_err(local_delete_err);
+        } else {
+            error_free(local_delete_err);
+        }
         goto finish;
     }
 
-- 
2.26.2