you have to add a feature to delete when the disk is full, if you are not fixing RETENTION POLICIES

I am getting sick of my disk running full because you are not fixing this
https://github.com/influxdata/influxdb/issues/20787

How can I delete stuff without resizing the disk???
```
> DELETE WHERE time < '2021-09-10'
ERR: shard 6: open /var/lib/influxdb/data/collections/autogen/6/000002212-000000026.tombstone.tmp: no space left on device
```
I have 1MB free

Start by reading the linked issue #20787 and examining the reported DELETE command failure when only 1 MB remains on disk. Identify the deletion behavior and tests needed for this full-disk case; done means the requested deletion path is defined and verified without requiring disk resizing.

Written by the indexing model from the issue text.