I have 2 hdd storage boxes I share with my linux server which has a SSD of ~500 GB.
I want to merge the 3 folders into one and I'm using unionfs for that. I need it to download data on it.
How can I limit how much my folder in my SSD can grow in size? I have other stuff running that needs the disk space too so if I ran out of space I'll have issues.
Also what would be the best way with unionfs/similar to have data written in SSD first then moved to hdd later? Is unionfs smart enough for that?