Re: [PATCH] scsi/sata write barrier support

[Jens Axboe]

On Mon, Feb 21 2005, Greg Stark wrote:
> 
> Jens Axboe <axboe@xxxxxxx> writes:
> 
> > For the longest time, only the old PATA drivers supported barrier writes
> > with journalled file systems. 
> 
> What about for fsync(2)? One of the most frequent sources of data loss on the
> postgres mailing list has to do with users with IDE drives where fsync returns
> even though the data hasn't actually reached the disk. A power outage can
> cause lost data or a corrupted database.
> 
> Is there any progress getting fsync to use this new infrastructure so it can
> actually satisfy its contract?

fsync has been working all along, since the initial barrier support for
ide. only ext3 and reiserfs support it.

-- 
Jens Axboe

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