Mysql quota for database using zfs on CentOS 7

Assume we have done Move mysql data folder to ZFS on CentOS 7.
Follow steps to create mysql database (run as root). (database files locate at /mysqldata)

// add fcontext for database storage folder. Only needs running once
semanage fcontext -a -t mysqld_db_t "/mysqldata(/.*)?"

// create folder for database
zfs create -o mountpoint=/mysqldata/test_quota -o quota=1gb mysqldata/test_quota
chown -R mysql:mysql /mysqldata/test_quota
chmod -R 700 /mysqldata/test_quota

cd /var/lib/mysql
mysql -e "create database test_quota;"
mv test_quota/db.opt /mysqldata/test_quota
mv test_quota /tmp
rm -rf /tmp/test_quota
ln -s /mysqldata/test_quota /var/lib/mysql
restorecon -R -v /mysqldata

Now the database space is only 1GB.
To delete mysql database

cd /var/lib/mysql
TABLES=$(mysql test_quota -e 'show tables' | awk '{ print $1}' | grep -v '^Tables' )

for t in $TABLES
	msg "Deleting $t table from ${dbname} database..."
	mysql ${dbname} -e "drop table $t"
echo "All tables have been dropped."
rm test_quota
mkdir test_quota
chown mysql:mysql test_quota
mysql -e "drop database test_quota"
zfs destroy mysqldata/test_quota
rm -rf /mysqldata/test_quota