XFS and nobarrier with SSDs

[Christoph Hellwig]

On Mon, Dec 14, 2015 at 10:18:54AM +0000, Georg Sch?nberger wrote:
> > Or to phrase it
> > differently:  If nobarrier makes a difference skipping it is not safe.
> I do not fully understand that sentence, what do you mean by "makes a 
> difference" and "skipping is not safe"?

The rule of thumb is: if nobarrier makes your workload run faster you
should not be using it, aka: don't use it.