Mimir comapaction has not successfully ran

[Arturito145]

Hi, I was trying to investigate why mimir is not succeeding in making the compactions and got to a point where I saw it’s pvc is full, my pvc is 100GB and when the compaction is failing it’s suddenly empty.

I was wondering if someone could help me to find the right configuration to fix it, since I don’t want to keep increasing its storage.

Thanks 😊

[deniszh]

Hi @Arturito145
Grafana has capacity planning page, with recommended amount of resources for Mimir components. Also, it described in more details in https://grafana.com/docs/mimir/latest/references/architecture/components/compactor/#compactor-disk-utilization. It says that "you could estimate needing 150GB of disk space for every 10M active series owned by the largest tenant."
So, if you really struggling with space, you can drop compaction-concurrency to 1, and decrease biggest compaction range blocks size from 24h, to e.g. 12h - but that potentially have negative performance consequences.
You can also try to spawn more compactors in parallel.