查看存储位置和策略

您可以监控有关可用存储位置标签和当前存储策略的信息。

查看磁盘存储信息

在 V_MONITOR.DISK_STORAGE 系统表中查询每个数据库节点上的磁盘存储信息。有关详细信息，请参阅使用系统表和 更改位置用途。V_MONITOR.DISK_STORAGE 系统表包括 CATALOG 注释，指示该位置用于存储编录文件。

查看位置标签

以下三个系统表在 location_labels 列中包含有关存储位置标签的信息：

• storage_containers

• storage_locations

• partitions

对 storage_containers 系统表的相关列使用类似于以下内容的查询：

VMART=> select node_name,projection_name, location_label from v_monitor.storage_containers;
    node_name     |   projection_name    | location_label
------------------+----------------------+-----------------
 v_vmart_node0001 | states_p             |
 v_vmart_node0001 | states_p             |
 v_vmart_node0001 | t1_b1                |
 v_vmart_node0001 | newstates_b0         | FAST3
 v_vmart_node0001 | newstates_b0         | FAST3
 v_vmart_node0001 | newstates_b1         | FAST3
 v_vmart_node0001 | newstates_b1         | FAST3
 v_vmart_node0001 | newstates_b1         | FAST3
 .
 .
 .

对 v_catalog.storage_locations 系统表的列使用类似于以下内容的查询：

VMart=> select node_name, location_path, location_usage, location_label from storage_locations;
    node_name     |               location_path               | location_usage | location_label
------------------+-------------------------------------------+----------------+----------------
 v_vmart_node0001 | /home/dbadmin/VMart/v_vmart_node0001_data | DATA,TEMP      |
 v_vmart_node0001 | home/dbadmin/SSD/schemas                  | DATA           |
 v_vmart_node0001 | /home/dbadmin/SSD/tables                  | DATA           | SSD
 v_vmart_node0001 | /home/dbadmin/SSD/schemas                 | DATA           | Schema
 v_vmart_node0002 | /home/dbadmin/VMart/v_vmart_node0002_data | DATA,TEMP      |
 v_vmart_node0002 | /home/dbadmin/SSD/tables                  | DATA           |
 v_vmart_node0002 | /home/dbadmin/SSD/schemas                 | DATA           |
 v_vmart_node0003 | /home/dbadmin/VMart/v_vmart_node0003_data | DATA,TEMP      |
 v_vmart_node0003 | /home/dbadmin/SSD/tables                  | DATA           |
 v_vmart_node0003 | /home/dbadmin/SSD/schemas                 | DATA           |
(10 rows)

对 v_monitor.partitions 系统表的列使用类似于以下内容的查询：

VMART=> select partition_key, projection_name, location_label from v_monitor.partitions;
 partition_key |   projection_name    | location_label
---------------+----------------------+---------------
 NH            | states_b0            | FAST3
 MA            | states_b0            | FAST3
 VT            | states_b1            | FAST3
 ME            | states_b1            | FAST3
 CT            | states_b1            | FAST3
 .
 .
 .

查看存储层次

查询 storage_tiers 系统表以查看带标签和不带标签的存储容器及其相关信息：

VMart=> select * from v_monitor.storage_tiers;
 location_label | node_count | location_count | ros_container_count | total_occupied_size
----------------+------------+----------------+---------------------+---------------------
                |          1 |              2 |                  17 |           297039391
 SSD            |          1 |              1 |                   9 |                1506
 Schema         |          1 |              1 |                   0 |                   0
(3 rows)

查看存储策略

查询 storage_policies 系统表以查看适当位置的当前存储策略。

VMART=> select * from v_monitor.storage_policies;
 schema_name | object_name |  policy_details  | location_label
-------------+-------------+------------------+-----------------
             | public      | Schema           | F4
 public      | lineorder   | Partition [4, 4] | M3
(2 rows)