+
+ /*
+ * Some flags require that we place user holds on the datasets that are
+ * being sent so they don't get destroyed during the send. We can skip
+ * this step if the pool is imported read-only since the datasets cannot
+ * be destroyed.
+ */
+ if (!flags->dryrun && !zpool_get_prop_int(zfs_get_pool_handle(zhp),
+ ZPOOL_PROP_READONLY, NULL) &&
+ zfs_spa_version(zhp, &spa_version) == 0 &&
+ spa_version >= SPA_VERSION_USERREFS &&
+ (flags->doall || flags->replicate)) {