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1.7 KiB
1.7 KiB
slug |
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/en/operations/system-tables/disks |
disks
Contains information about disks defined in the server configuration.
Columns:
name
(String) — Name of a disk in the server configuration.path
(String) — Path to the mount point in the file system.free_space
(UInt64) — Free space on disk in bytes.total_space
(UInt64) — Disk volume in bytes.unreserved_space
(UInt64) — Free space which is not taken by reservations (free_space
minus the size of reservations taken by merges, inserts, and other disk write operations currently running).keep_free_space
(UInt64) — Amount of disk space that should stay free on disk in bytes. Defined in thekeep_free_space_bytes
parameter of disk configuration.
Example
SELECT * FROM system.disks;
┌─name────┬─path─────────────────┬───free_space─┬──total_space─┬─keep_free_space─┐
│ default │ /var/lib/clickhouse/ │ 276392587264 │ 490652508160 │ 0 │
└─────────┴──────────────────────┴──────────────┴──────────────┴─────────────────┘
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