Hi,
I had configured a cache tier with max object counts 500k. But no evict
happens when the object counts hit the configured maximum.
Anyone experienced this issue? What should I do?
$ ceph health detail
HEALTH_WARN 1 cache pools at or near target size
CACHE_POOL_NEAR_FULL 1 cache pools at or near target size
cache pool 'cached-hdd-cache' with 887.11k objects at/near target max
500k objects
$ ceph df | grep -e "POOL\|cached-hdd"
POOLS:
POOL ID STORED OBJECTS USED %USED
MAX AVAIL
cached-hdd 24 1.4 TiB 1.52M 1.4 TiB 0.60
78 TiB
cached-hdd-cache 25 842 GiB 887.14k 842 GiB 15.97
1.4 TiB
$ ceph osd pool get cached-hdd-cache all
size: 3
min_size: 1
pg_num: 128
pgp_num: 128
crush_rule: nvme-repl-rule
hashpspool: true
nodelete: false
nopgchange: false
nosizechange: false
write_fadvise_dontneed: false
noscrub: false
nodeep-scrub: false
hit_set_type: bloom
hit_set_period: 1200
hit_set_count: 4
hit_set_fpp: 0.05
use_gmt_hitset: 1
target_max_objects: 500000
target_max_bytes: 1099511627776
cache_target_dirty_ratio: 0
cache_target_dirty_high_ratio: 0.7
cache_target_full_ratio: 0.9
cache_min_flush_age: 0
cache_min_evict_age: 0
min_read_recency_for_promote: 1
min_write_recency_for_promote: 1
fast_read: 0
hit_set_grade_decay_rate: 20
hit_set_search_last_n: 1
pg_autoscale_mode: warn
Regs,
Icy
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