diff options
| -rw-r--r-- | blockdev.c | 55 |
1 files changed, 33 insertions, 22 deletions
diff --git a/blockdev.c b/blockdev.c index 53df2eb875..4775a07d93 100644 --- a/blockdev.c +++ b/blockdev.c @@ -3756,6 +3756,39 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs, sync = MIRROR_SYNC_MODE_FULL; } + if (has_replaces) { + BlockDriverState *to_replace_bs; + AioContext *replace_aio_context; + int64_t bs_size, replace_size; + + bs_size = bdrv_getlength(bs); + if (bs_size < 0) { + error_setg_errno(errp, -bs_size, "Failed to query device's size"); + return; + } + + to_replace_bs = check_to_replace_node(bs, replaces, errp); + if (!to_replace_bs) { + return; + } + + replace_aio_context = bdrv_get_aio_context(to_replace_bs); + aio_context_acquire(replace_aio_context); + replace_size = bdrv_getlength(to_replace_bs); + aio_context_release(replace_aio_context); + + if (replace_size < 0) { + error_setg_errno(errp, -replace_size, + "Failed to query the replacement node's size"); + return; + } + if (bs_size != replace_size) { + error_setg(errp, "cannot replace image with a mirror image of " + "different size"); + return; + } + } + /* pass the node name to replace to mirror start since it's loose coupling * and will allow to check whether the node still exist at mirror completion */ @@ -3816,33 +3849,11 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp) } if (arg->has_replaces) { - BlockDriverState *to_replace_bs; - AioContext *replace_aio_context; - int64_t replace_size; - if (!arg->has_node_name) { error_setg(errp, "a node-name must be provided when replacing a" " named node of the graph"); goto out; } - - to_replace_bs = check_to_replace_node(bs, arg->replaces, &local_err); - - if (!to_replace_bs) { - error_propagate(errp, local_err); - goto out; - } - - replace_aio_context = bdrv_get_aio_context(to_replace_bs); - aio_context_acquire(replace_aio_context); - replace_size = bdrv_getlength(to_replace_bs); - aio_context_release(replace_aio_context); - - if (size != replace_size) { - error_setg(errp, "cannot replace image with a mirror image of " - "different size"); - goto out; - } } if (arg->mode == NEW_IMAGE_MODE_ABSOLUTE_PATHS) { |