Re: Bug#956877: release-notes: Upgrade from XFS removes mount option "barrier|nobarrier"
On Sun, May 03, 2020 at 06:42:22PM +0200, Niels Thykier wrote:
> Hendrik Boom:
> > On Sun, May 03, 2020 at 09:34:34AM +0200, Niels Thykier wrote:
> >> [...]
> >
> > Would that refer to the write battier on the hard drive? Isn't that
> > essential to the safe operation of XFS?
> >
> > -- hendrik
> >
>
> Not any longer AFAICT. The following patch discussion in the Linux
> kernel suggests that it was a "no-op" for some time up to its removal:
>
> * https://patchwork.kernel.org/patch/9486549/
Yes. That tells me that the option was ignored, but write barriers were
still used when required for integrity.
-- hendrik
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