The journalling file system saga

[Christian Laursen]

Peter Schuller <peter.schuller at infidyne.com> writes:

[Problems with softupdates]

> Yet another problem is that an fsync() no longer guarantees that data is on 
> disk, even with write caching disabled on the media. This doesn't break 
> things like PostgreSQL provided that the order of writes is preserved, but it 
> does break things like MTA:s that want to guarantee that critical data has 
> been commited to persistent storage before signaling success to an external 
> entity (SMTP client).

fsync(2) works as advertised with softupdates enabled so that shouldn't cause
any problems for applications that are written properly.

-- 
Med venlig hilsen
    Christian Laursen