Loki memcache extstore is always empty

Grafana Loki
,
1

Hi, after reading tons of articles everywhere including official docs - extstore for some reason is still not working… It creates a new volume, but it is always empty.
I use these overrides to add persistent volume.

Maybe someone had a working example and we missing some other configuration? When we install memcache locally and fill in it using python - disk space is used…

chunksCache:

  allocatedMemory: 2048

  parallelism: 2

  batchSize: 3

  defaultValidity: 24h

  writebackBuffer: 1000

  extraArgs:

    t: 4

  extraExtendedOptions: "ext_threads=10,ext_max_sleep=10000,slab_automove_freeratio=0.10,ext_recache_rate=0"

  persistence:

    enabled: true

    storageSize: 10Gi

    storageClass: null

    mountPath: /lokimemcache

    labels: {}

Just in case: loki 3.5.2, helm 6.32.0, loki in distributed mode

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2

UPD: extstore is used only when RAM is full. so it is working actually with some patience