mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-18 20:32:43 +00:00
28 lines
1.5 KiB
Markdown
28 lines
1.5 KiB
Markdown
# system.disks {#system_tables-disks}
|
|
|
|
Contains information about disks defined in the [server configuration](../../engines/table-engines/mergetree-family/mergetree.md#table_engine-mergetree-multiple-volumes_configure).
|
|
|
|
Columns:
|
|
|
|
- `name` ([String](../../sql-reference/data-types/string.md)) — Name of a disk in the server configuration.
|
|
- `path` ([String](../../sql-reference/data-types/string.md)) — Path to the mount point in the file system.
|
|
- `free_space` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Free space on disk in bytes.
|
|
- `total_space` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Disk volume in bytes.
|
|
- `keep_free_space` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Amount of disk space that should stay free on disk in bytes. Defined in the `keep_free_space_bytes` parameter of disk configuration.
|
|
|
|
**Example**
|
|
|
|
```sql
|
|
:) SELECT * FROM system.disks;
|
|
```
|
|
|
|
```text
|
|
┌─name────┬─path─────────────────┬───free_space─┬──total_space─┬─keep_free_space─┐
|
|
│ default │ /var/lib/clickhouse/ │ 276392587264 │ 490652508160 │ 0 │
|
|
└─────────┴──────────────────────┴──────────────┴──────────────┴─────────────────┘
|
|
|
|
1 rows in set. Elapsed: 0.001 sec.
|
|
```
|
|
|
|
[Original article](https://clickhouse.com/docs/en/operations/system-tables/disks) <!--hide-->
|