When rados put file into pool, the pool usage increase fast, althrough it configured a tier pool.
I check it with ceph df, USED and OBJECTS columns both increased(both cache pool and base pool).
But it should't only write into cache tier layer pool?
pool configure like below:
jewel 10.2.5, cache pool 2 replications with 3 ssd, base pool 2 replications with 2 hdd.
cache pool:
writeback target_bytes 264207763774 target_objects 10000000
hit_set bloom{false_positive_probability: 0.05, target_size: 0, seed: 0}
3600s
min_read_recency_for_promote 1 min_write_recency_for_promote 1
cache_target_dirty_ratio:0.4 (current usage percent only 23.47%)
NAME ID USED %USED MAX AVAIL OBJECTS
rbd 0 0 0 30523G 0
cached_test_cache 5 71625M 23.57 226G 185
test_cache 6 44324M 1.75 2421G 189
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