diff options
| author | Fam Zheng <famz@redhat.com> | 2015-04-01 09:45:39 +0800 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2015-04-28 15:36:09 +0200 |
| commit | 1c2b49a17282f3abd9ccf71b65d0be62d3b3192e (patch) | |
| tree | 18a284e0fd4d80d88e745130cb58873be1541487 | |
| parent | e5e51dd3af6a0872dedce290ee41437b5aeed109 (diff) | |
block/null: Support reopen
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>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1427852740-24315-3-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | block/null.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/block/null.c b/block/null.c index 267d3e6ad9..7d083233fb 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) |