From: Fam Zheng <f...@redhat.com> 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 <f...@redhat.com> Reviewed-by: Eric Blake <ebl...@redhat.com> Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com> Message-id: 1427852740-24315-3-git-send-email-f...@redhat.com Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com> Signed-off-by: Kevin Wolf <kw...@redhat.com> --- block/null.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/block/null.c b/block/null.c index 267d3e6..7d08323 100644 --- a/block/null.c +++ b/block/null.c @@ -177,6 +177,12 @@ 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", @@ -189,6 +195,7 @@ 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 = { @@ -203,6 +210,7 @@ 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) -- 1.8.3.1