diff options
Diffstat (limited to 'blockdev.c')
| -rw-r--r-- | blockdev.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/blockdev.c b/blockdev.c index 57373d3661..48315e86c0 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1915,6 +1915,7 @@ void qmp_block_stream(const char *device, bool has_base, void qmp_block_commit(const char *device, bool has_base, const char *base, bool has_top, const char *top, + bool has_backing_file, const char *backing_file, bool has_speed, int64_t speed, Error **errp) { @@ -1980,11 +1981,16 @@ void qmp_block_commit(const char *device, } if (top_bs == bs) { + if (has_backing_file) { + error_setg(errp, "'backing-file' specified," + " but 'top' is the active layer"); + return; + } commit_active_start(bs, base_bs, speed, on_error, block_job_cb, bs, &local_err); } else { commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, - &local_err); + has_backing_file ? backing_file : NULL, &local_err); } if (local_err != NULL) { error_propagate(errp, local_err); |