Disk usage discrepancy?

[Alexey]

@GiantJack

the filewalker should check for used space and fix the error or what is his goal?

it should calculate the used space and update databases. But it will do so only if it will not fail.
You need to check, that all filewalkers are finished successfully for all trusted satellites:

Filewalker status

Logs should be at least info level Used space filewalker docker logs storagenode -f 2>&1 | grep "used-space-filewalker" | grep -E "started|finished" GC filewalker docker logs storagenode -f 2>&1 | grep "gc-filewalker" | grep -E "started|finished" retain docker logs storagenode -f 2>&1 | grep "retain" collector docker logs storagenode -f 2>&1 | grep "collector" trash docker logs storagenode -f 2>&1 | grep "piece:trash"