Reduce nextcloudpi allocated space

[jokerigno]

Hi,

I had some critical issue on my minipc running proxmox. Basically both VM running on that nuc-like device became unresponsible to lack of space.

I connected to nextcloudpi (the other vm is Home Assistant OS) to move all the files that matters to me to my unraid server but now I want also to reduce space allocated to that LXC first (second goal is also to better manage storage from HA but I think i'll opena a different discussion to stay in topic.

This is the situation right now:

Does anyone knows how can I achieve this goal without losing everything?

Thanks in advance