@@ -1522,12 +1522,6 @@ static int bdrv_open_inherit(BlockDriverState **pbs, const char *filename,
return -ENODEV;
}
- if (bs->blk && blk_get_public(bs->blk)->throttle_state) {
- error_setg(errp, "Cannot reference an existing block device for "
- "which I/O throttling is enabled");
- return -EINVAL;
- }
-
bdrv_ref(bs);
*pbs = bs;
return 0;
@@ -2652,13 +2652,6 @@ void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd,
goto out;
}
- /* The BlockBackend must be the only parent */
- assert(QLIST_FIRST(&bs->parents));
- if (QLIST_NEXT(QLIST_FIRST(&bs->parents), next_parent)) {
- error_setg(errp, "Cannot throttle device with multiple parents");
- goto out;
- }
-
throttle_config_init(&cfg);
cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps;
cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd;