Loki bloom buiilder ignores bloomshipper cache size limit settings

[davidk-zx]

Describe the bug
We have configured loki helm chart to run with these settings regarding bloomshipper cache storage

storage_config:
  bloom_shipper:
    blocks_cache:
      # cleanup old blocks
      ttl: 30m
      soft_limit: 12GiB
      hard_limit: 25GiB

Pod was running 19 hours and is well over the storage limits

Our ephemeral cache size limit is 30G from k8s side, so this causes pods to crash eventually

To Reproduce
Run loki helm chart 6.23.0 with bloom filters enabled

Expected behavior
Bloom builder should contain its data within the expected range, usually under 12GiB specified

Environment:

• EKS kubernetes cluster, deployed with loki helm chart 6.23.0

Screenshots, Promtail config, or terminal output

Bloomshipper size after 19h of pod runtime

/ $ du -h /var/loki | tail
420.0K	/var/loki/data/bloomshipper/bloom/loki_index_20111/fake/blocks/fa453f1058d6a7fa-fa749fd290872aba
40.0K	/var/loki/data/bloomshipper/bloom/loki_index_20111/fake/blocks/fd88138c5e21fc61-fdb8878c635afec5/1737587400671-1737617602900-e70ec597
40.0K	/var/loki/data/bloomshipper/bloom/loki_index_20111/fake/blocks/fd88138c5e21fc61-fdb8878c635afec5
4.8G	/var/loki/data/bloomshipper/bloom/loki_index_20111/fake/blocks
4.8G	/var/loki/data/bloomshipper/bloom/loki_index_20111/fake
4.8G	/var/loki/data/bloomshipper/bloom/loki_index_20111
29.9G	/var/loki/data/bloomshipper/bloom
29.9G	/var/loki/data/bloomshipper
29.9G	/var/loki/data
29.9G	/var/loki