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| author | Alberto Garcia <berto@igalia.com> | 2016-10-28 10:08:10 +0300 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2016-10-31 16:52:38 +0100 |
| commit | 61b49e48b379db45f0ea91c93a61c873695549a9 (patch) | |
| tree | 67dac53b67ee625ec04cfa2ec0610dfd5693a457 /block.c | |
| parent | f3ede4b05d1407d48314f0edada5e402865e641e (diff) | |
| download | qemu-61b49e48b379db45f0ea91c93a61c873695549a9.zip qemu-61b49e48b379db45f0ea91c93a61c873695549a9.tar.gz qemu-61b49e48b379db45f0ea91c93a61c873695549a9.tar.bz2 | |
block: Support streaming to an intermediate layer
This makes sure that the image we are streaming into is open in
read-write mode during the operation.
Operation blockers are also set in all intermediate nodes, since they
will be removed from the chain afterwards.
Finally, this also unblocks the stream operation in backing files.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block.c')
| -rw-r--r-- | block.c | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -1428,9 +1428,11 @@ void bdrv_set_backing_hd(BlockDriverState *bs, BlockDriverState *backing_hd) backing_hd->drv ? backing_hd->drv->format_name : ""); bdrv_op_block_all(backing_hd, bs->backing_blocker); - /* Otherwise we won't be able to commit due to check in bdrv_commit */ + /* Otherwise we won't be able to commit or stream */ bdrv_op_unblock(backing_hd, BLOCK_OP_TYPE_COMMIT_TARGET, bs->backing_blocker); + bdrv_op_unblock(backing_hd, BLOCK_OP_TYPE_STREAM, + bs->backing_blocker); /* * We do backup in 3 ways: * 1. drive backup |