That tracks with my experience as well. I’ve been trying to get a system set up where the OS and Docker live on a small disk by themselves, and then go out to the larger RAID Array to load its data. But it’s sounding like that’s not really going to work the way I want to (probably why it’s crashed on me so many times, too).
So I have a 2TB nVME for VM Host Disks, and a 72TB RAID Array on my server. My hope is to have the OS and Docker on the 32GB drive I set up for the VM (which lives on the nVME), and then all the files related to the webapps live in a folder on RAID Array in a section meant just for that.
But the other responses in this thread make me think that’s not really going to be an option. Maybe I could make a very large VM Host Disk and put it on the RAID Array, let Docker just forget about the mount points entirely…
I’m still early enough in that if something’s wrong or not ideal about the config, I can go scorched earth and have the whole thing back up and running in an hour or two.
Is there a better filesystem that I could share out for this kind of thing? My RAID Array is run through OpenMediaVault if that helps.