Hi! This morning I logged into the webUI and saw that one of my disks was filled to 100%. I limit my shares free space to around 300GB. It's been fine for years and I did not change any settings. One thing I did was free up some space by deleting old stuff on the array a few weeks ago. Any idea how this is happening?

unraid-diagnostics-20260819-0610.zip

Your "u---------p" share has min free space set to 0 so it's likely the one that filled it up.

Edited August 19Aug 19 by Kilrah

Normally I would suspect something like a too restrictive Split Level causing this type of issue or perhaps the include/exclude on the share settings but it does not look like this is the issue looking at the share .cfg files in the diagnostics you supplied.

It might be worth checking that you do not have a job explicitly writing to disk4. The most likely candidate is whatever is writing to the B----------s share as this only exists on disk4.

After you fix whatever caused this, I recommend moving some data from disk4 so it has more free space. If the disk ever needs to have its filesystem repaired, it will need some free space to work with.