Unmounting Btrfs partition: Error finding object for block device

[mb720]

Hi!

When trying to unmount a Btrfs partition with umount /run/media/mb/*, I get this error:

Error finding object for block device 0:56

As documented in this question and answer this can be worked around by using sudo or udisksctl.

I was wondering if there's a way to keep using umount as it is for unmounting disks and whether udiskie can do something about that, maybe mounting the Btrfs partition differently.

I realize that the answer might very well be that udiskie can't do anything about this and the problem would have to be solved deeper down the stack, such as in udisks, the Btrfs driver, or somewhere else.

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P.S.: Thanks again for your great work on udiskie. I use it everyday since at least 2017 and it works flawlessly! 👍