BTRFS says not a btrfs filesystem when running commands like filesystem usage / and balance

[zilexa]

sudo btrfs filesystem usage /
ERROR: not a btrfs filesystem: /

Maybe because the root of the actual drive/filesystem is not mounted at /. But how can I then get a proper idea of usage? Because Disks is very limited. And Disk Usage Analyzer completely ignores any subvolumes inside /home (my Pictures, Documents, Media folders are subvolumes that I regularly snapshot/send-receive to external drives).

I moved around huge amounts of data (350GB multiple times, on a 1TB drive) and would like to run a balance just once by exception (a limited balance, btrfs balance start -dusage=85 /). But cannot do that either, same error.

What's the way around this with Bluefin? Or is this not Bluefin specific but also for Silverblue in general?

[sebjag]

sudo btrfs filesystem usage /sysroot

Regarding balancing, see:

• https://forge.fedoraproject.org/atomic-desktops/tracker/issues/77