I've gotten into a situation for which I take the blame, but I'm not sure what, if any, options I have to fix it. I have a 2012 Essentials server with several pools/volumes. One of them is thin provisioned and has run out of space (it really shouldn't be out of space, as the total of all the files on the volume is much less than what Windows is reporting used, but that's a topic for another thread). As such the volume is either Offline, or read-only. The issue is that the pool contains 7 drives and I set it up with 7 columns. This presents a challenge in that I can't easily add 7 more disks (in hindsight, I should never have set this up as thin provisioned).
I can easily get delete or move a bunch of content from this volume to other places, but I can't see any way to delete files. If I try to put the volume Online, it almost immediately goes Offline again. If I set it to Read-Only with PowerShell then it stays online, but I obviously can't delete anything. I even tried booting in Safe Mode to see if that would prevent anything from trying to write, so that I could keep it online in non-Read-Only mode.
Does anyone have any advice for me? Thanks in advance.