Filewalker not running when disabling lazyfilewalker

Please also note that the dashboard shows the allocated size and the free space in the allocation, not on the disk.
So actually you need to calculate the size of the data location to compare:

du --si -d 1 /mnt/storj/storagenode/storage

This also suggests that you likely have issues with the databases (they were not updated with the increment).
Please search for errors related to the databases in your logs. Perhaps also it’s better to check them too:

And if you didn’t disable the scan on startup (it’s enabled by default), and do not have errors related to the filewalkers and databases, the used-space-filewalker should update your databases with actual values. It’s running only after a restart.
The used-space-filewalker should be successfully finished for each trusted satellites

and you should not have untrusted satellites data: