Filesystems being a worthless abstraction on, for example, a database server is the rationale for setting up a DBMS to use raw devices. This is not a popular ap

Filesystems being a worthless abstraction on, for example, a database server is the rationale for setting up a DBMS to use raw devices. This is not a popular approach and hasn't been for some time (I don't think any of the popular OSS databases have ever offered this approach, and AFAIK even Oracle is moving away from offering it) but it's not as though this is a radical idea. edit: the Linux direct I/O feature that sort of obsoletes this use of raw devices was apparently developed in part by Oracle, which I guess might be interesting https://lwn.net/Articles/348719/ https://lwn.net/Articles/348719/