diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2013-03-28 15:29:24 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2013-04-22 10:27:59 +0200 |
| commit | 31ca6d077c24b7aaa322d8930e3e5debbdb4a047 (patch) | |
| tree | 81974b0ff7bd37ca4493b0c4f95556adaab2f1f0 /include/block/block.h | |
| parent | 2af5ef70af9fdc823407ddc4ae14766806d4837a (diff) | |
block: Add driver-specific options for backing files
Options starting in "backing." are passed to the backing file now. If
you don't need to specify the filename for the backing file, you can add
it on the command line instead of in the image file:
$ qemu-nbd -t /tmp/test.img
$ qemu-img create -f qcow2 empty.qcow2 1G
$ qemu-system-x86_64 -drive file=empty.qcow2,backing.file.driver=nbd,\
backing.file.host=localhost
Note that this doesn't override the backing filename from the image. If
the image has one, this will fail because NBD doesn't want the options
and a filename at the same time.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'include/block/block.h')
| -rw-r--r-- | include/block/block.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/block/block.h b/include/block/block.h index ebd95127a1..1251c5cf9f 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -137,7 +137,7 @@ int bdrv_parse_cache_flags(const char *mode, int *flags); int bdrv_parse_discard_flags(const char *mode, int *flags); int bdrv_file_open(BlockDriverState **pbs, const char *filename, QDict *options, int flags); -int bdrv_open_backing_file(BlockDriverState *bs); +int bdrv_open_backing_file(BlockDriverState *bs, QDict *options); int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options, int flags, BlockDriver *drv); BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue, |