Loki retention: chunks kinda deleted, but the size of the folder didn't decrease

Hi,

I have a question regarding my Loki setup.
Here is mu config:

server:

  http_listen_port: 3100

common:

path_prefix: /var/lib/loki

auth_enabled: false


ingester:

lifecycler:

ring:

kvstore:

store: inmemory

replication_factor: 1

chunk_idle_period: 5m

chunk_retain_period: 30s




schema_config:

configs:

    - from: 2022-06-01

store: boltdb-shipper

object_store: filesystem

schema: v11

index:

prefix: index_

period: 24h




storage_config:

boltdb_shipper:

active_index_directory: /var/lib/loki/index

cache_location: /var/lib/loki/boltdb-cache

filesystem:

directory: /var/lib/loki/chunks


limits_config:

allow_structured_metadata: false

reject_old_samples: true

reject_old_samples_max_age: 168h

retention_period: 8000h


compactor:

working_directory: /var/lib/loki/compactor

retention_enabled: true

compaction_interval: 24h

retention_delete_delay: 1h

delete_request_store: filesystem

My first chunk was created on December 3, 2024. I recently applied a configuration with retention parameters (previously, retention was not enabled). When I checked today, the first chunk now has the date December 29, 2024, but the size of the /chunks folder has not decreased.
I this folder /var/lib/loki/compactor/retention/filesystem_2022-06-01/markers/ is also empty. And this one /var/lib/loki/compactor/deletion/delete_requests/delete_requests contains only one record:

-rw-r--r-- 1 root root 16384 Nov 26 12:27 /var/lib/loki/compactor/deletion/delete_requests/delete_requests

with this content

cat /var/lib/loki/compactor/deletion/delete_requests/delete_requests 

??

  ????FnQ??

           ?HyQ5L&

Could you please help me understand what happened? Were the chunks really deleted?
If I change retention_period to 1440h, will this keep data for only 2 months and remove older chunks?

Thank you in advance.

Try changing retention_period to a value that is multiplied by 24, maybe 7200h (300 * 24), and see if that helps.

Also check compactor and see if there are errors.

1 Like

Thank you. It worked.