+ /*
+ * Initialize internal SPA structures.
+ */
+ spa->spa_state = POOL_STATE_ACTIVE;
+ spa->spa_ubsync = spa->spa_uberblock;
+ spa->spa_verify_min_txg = spa->spa_extreme_rewind ?
+ TXG_INITIAL - 1 : spa_last_synced_txg(spa) - TXG_DEFER_SIZE - 1;
+ spa->spa_first_txg = spa->spa_last_ubsync_txg ?
+ spa->spa_last_ubsync_txg : spa_last_synced_txg(spa) + 1;
+ spa->spa_claim_max_txg = spa->spa_first_txg;
+ spa->spa_prev_software_version = ub->ub_software_version;
+
+ error = dsl_pool_init(spa, spa->spa_first_txg, &spa->spa_dsl_pool);
+ if (error)
+ return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
+ spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset;
+
+ if (spa_dir_prop(spa, DMU_POOL_CONFIG, &spa->spa_config_object) != 0)
+ return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
+
+ if (spa_version(spa) >= SPA_VERSION_FEATURES) {
+ boolean_t missing_feat_read = B_FALSE;
+ nvlist_t *unsup_feat, *enabled_feat;
+
+ if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_READ,
+ &spa->spa_feat_for_read_obj) != 0) {
+ return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
+ }
+
+ if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_WRITE,
+ &spa->spa_feat_for_write_obj) != 0) {
+ return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
+ }
+
+ if (spa_dir_prop(spa, DMU_POOL_FEATURE_DESCRIPTIONS,
+ &spa->spa_feat_desc_obj) != 0) {
+ return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
+ }
+
+ enabled_feat = fnvlist_alloc();
+ unsup_feat = fnvlist_alloc();
+
+ if (!feature_is_supported(spa->spa_meta_objset,
+ spa->spa_feat_for_read_obj, spa->spa_feat_desc_obj,
+ unsup_feat, enabled_feat))
+ missing_feat_read = B_TRUE;
+
+ if (spa_writeable(spa) || state == SPA_LOAD_TRYIMPORT) {
+ if (!feature_is_supported(spa->spa_meta_objset,
+ spa->spa_feat_for_write_obj, spa->spa_feat_desc_obj,
+ unsup_feat, enabled_feat)) {
+ missing_feat_write = B_TRUE;
+ }
+ }
+
+ fnvlist_add_nvlist(spa->spa_load_info,
+ ZPOOL_CONFIG_ENABLED_FEAT, enabled_feat);
+
+ if (!nvlist_empty(unsup_feat)) {
+ fnvlist_add_nvlist(spa->spa_load_info,
+ ZPOOL_CONFIG_UNSUP_FEAT, unsup_feat);
+ }