Context: Rackspace CloudServers.
The options I can find are rather slim. Amazon will encrypt the whole disk (meh), Gazzang could encrypt a virtual partition with just the DB files on it (if the company was still around), I could encrypt the data at the column level (no good, can't search)... or I could use MariaDB.
I desperately want MySQL 5.7.9's JSON column, but it seems like MariaDB is my only good encryption option.
Is there a good option other than MariaDB for table-level encryption? Is MariaDB's encryption a good solution? Is at-rest encryption in a cloud environment really worth it?