Recover is in a few steps.
Step 1. Find out what is wrong in DB by listening all shares, data folders etc. You should execute command in shell to your DB, e.g. mysql/mariaDB:
You will see a table and should identify what are wrong storage’s there.
Step 2.
Step 3.
the ID is in a second raw in table from Step 1.
Step 4. Do some DB cleanup:
Step 5. Run FS rescan, for this use command:
sudo -u www-data php occ files:cleanup
You can see on my graphs in older treat that this operation will take a while…