The last night MySQL was updated and not work again.
Looks like the path where the database is located doesn't exist but is there and is browseable from WinSCP and Windows Explorer, but not from the command line:
For test, in VMWare I make a new fresh install only with OMV, OMV-Extras and MySQL.
I have a txt with the steps to setup MySQL (i use always, it's simply and works every time) and the path is not found, just like in my NAS.
service mysql stop
service mysql status
mkdir -p /sharedfolders/Soporte/Databases/MySQL
chown mysql:mysql /sharedfolders/Soporte/Databases/MySQL
mysql -u root -p -e "SELECT @@datadir;" <--- NOW GET ERROR IN THIS POINT
cp -rfvp /var/lib/mysql/* /sharedfolders/Soporte/Databases/MySQL/
Change in WebGUI:
Bin address: 0.0.0.0
datadir = /sharedfolders/Soporte/Databases/MySQL
mysql -u root -p -e "SELECT @@datadir;"
SQL: /etc/init.d/mysql restart
Thanks for the help.