IDE write ordering ?

[Alan Cox]

On Mon, Dec 01, 2003 at 09:33:17AM +0100, David Balazic wrote:
> But isn't the default on the majority of ATA drives to have write cache
> enabled ?

Yes. 

> is very informative.
> So my question is , how can one test if the journalled FS on his disk is
> actually working
> as it should or is it just waste of time and giving a false sense of safety

Its extremely hard to do because you need fairly complex tools to ensure
outstanding I/O during a sudden power off and out of order drive writeback
etc