Chapter 28. Get Pool Values

size

Description

Gets the number of replicas for objects in the pool. See Set the Number of Object Replicas_ for further details. Replicated pools only.

Type

Integer

min_size

Description

Gets the minimum number of replicas required for I/O. See Set the Number of Object Replicas_ for further details. Replicated pools only.

Type

Integer

Version

0.54 and above

crash_replay_interval

Description

The number of seconds to allow clients to replay acknowledged, but uncommitted requests.

Type

Integer

pgp_num

Description

The effective number of placement groups to use when calculating data placement.

Type

Integer

Valid Range

Equal to or less than pg_num.

crush_ruleset

Description

The ruleset to use for mapping object placement in the cluster.

Type

Integer

hit_set_type

Description

Enables hit set tracking for cache pools.

Type

String

Valid Settings

bloom, explicit_hash, explicit_object

hit_set_count

Description

The number of hit sets to store for cache pools. The higher the number, the more RAM consumed by the ceph-osd daemon.

Type

Integer

hit_set_period

Description

The duration of a hit set period in seconds for cache pools. The higher the number, the more RAM consumed by the ceph-osd daemon.

Type

Integer

hit_set_fpp

Description

The false positive probability for the bloom hit set type.

Type

Double

cache_target_dirty_ratio

Description

The percentage of the cache pool containing modified (dirty) objects before the cache tiering agent will flush them to the backing storage pool.

Type

Double

cache_target_full_ratio

Description

The percentage of the cache pool containing unmodified (clean) objects before the cache tiering agent will evict them from the cache pool.

Type

Double

target_max_bytes

Description

Ceph will begin flushing or evicting objects when the max_bytes threshold is triggered.

Type

Integer

target_max_objects

Description

Ceph will begin flushing or evicting objects when the max_objects threshold is triggered.

Type

Integer

cache_min_flush_age

Description

The time (in seconds) before the cache tiering agent will flush an object from the cache pool to the storage pool.

Type

Integer

cache_min_evict_age

Description

The time (in seconds) before the cache tiering agent will evict an object from the cache pool.

Type

Integer