Scan a filesystem for disk usage; create, check and repair quota files. It is best to run quota check with quotas turned off to prevent damage or loss to quota files. More information: https://manned.org/quotacheck.
sudo quotacheck --all
sudo quotacheck --force mountpoint
sudo quotacheck --debug mountpoint
sudo quotacheck --verbose mountpoint
sudo quotacheck --user user mountpoint
sudo quotacheck --group group mountpoint