Question about retentions


Hi all

I’ve got an old database with a lot of data. She used the autogen with infinite retention.

I’ve created a new retention on it, with 6 months retention, used by default.
Now, I saw all my old data are not visible. According the documentation, it seems normal and I can get my old data modifying my requests.

I can forget these old datas, so OK, not a problem.

But, how can I be sure my old data from this previous retention autogen is removed?
On the influxdb.conf, the retention is enabled with interval 30m, but after one days no space freed on my server.

Does someone got informations?



Sometimes this happens when the shard group duration is set differently than the retention policy.

What’s your current shard group duration?