+ uint64_t spa_prev_software_version; /* See ub_software_version */
+ uint64_t spa_feat_for_write_obj; /* required to write to pool */
+ uint64_t spa_feat_for_read_obj; /* required to read from pool */
+ uint64_t spa_feat_desc_obj; /* Feature descriptions */
+ taskqid_t spa_deadman_tqid; /* Task id */
+ uint64_t spa_deadman_calls; /* number of deadman calls */
+ uint64_t spa_sync_starttime; /* starting time fo spa_sync */
+ uint64_t spa_deadman_synctime; /* deadman expiration timer */