Confused with BTRFS filesystem - why is it full?

[megavolt]

Hello @Ben

What about your snapshots/subvolumes since you use btrfs?

Maybe that help you to get the size of each subvolume:

Over 250GB available BUT not enough space error

If the snapshot take space, you can check them like that: export UUID=$(findmnt -n -o UUID /) export MNTPNT=$(mktemp -d -t "btrfs.XXX") sudo mount -m -U "$UUID" "$MNTPNT" for x in $(sudo btrfs subvolume list "$MNTPNT" | cut -d' ' -f9); do echo ">>> Subvolume: $x" sudo btrfs filesystem du -s "$MNTPNT/$x" done sudo umount "$MNTPNT" And a one-liner: export UUID=$(findmnt -n -o UUID /); export MNTPNT=$(mktemp -d -t "btrfs.XXX"); sudo mount -m -U "$UUID" "$MNTPNT"; sleep 3 && for x in…