@@ -178,6 +178,12 @@ static BlockAIOCB *null_aio_flush(BlockDriverState *bs,
return null_aio_common(bs, cb, opaque);
}
+static int null_reopen_prepare(BDRVReopenState *reopen_state,
+ BlockReopenQueue *queue, Error **errp)
+{
+ return 0;
+}
+
static BlockDriver bdrv_null_co = {
.format_name = "null-co",
.protocol_name = "null-co",
@@ -190,6 +196,7 @@ static BlockDriver bdrv_null_co = {
.bdrv_co_readv = null_co_readv,
.bdrv_co_writev = null_co_writev,
.bdrv_co_flush_to_disk = null_co_flush,
+ .bdrv_reopen_prepare = null_reopen_prepare,
};
static BlockDriver bdrv_null_aio = {
@@ -204,6 +211,7 @@ static BlockDriver bdrv_null_aio = {
.bdrv_aio_readv = null_aio_readv,
.bdrv_aio_writev = null_aio_writev,
.bdrv_aio_flush = null_aio_flush,
+ .bdrv_reopen_prepare = null_reopen_prepare,
};
static void bdrv_null_init(void)
Reopen is used in block-commit. With this always-succeed operation, it is now possible to test committing to a null drive, by specifying "null-aio://" or "null-co://" as the backing image when creating the qcow2 image. Signed-off-by: Fam Zheng <famz@redhat.com> --- block/null.c | 8 ++++++++ 1 file changed, 8 insertions(+)