Re: [PATCH] ext3 barrier bits

[Andrew Morton]

Arjan van de Ven <arjanv@xxxxxxxxxx> wrote:
>
> 
> > - Does the kernel tell you if your disk doesn't supoprt barriers?  ie:
> >   how does the user know if it's working or not?
> 
> ... and how do you know your disk isn't lying and ignoring the barriers?
> 

If some benchmark slows down when barriers are enabled then that's a pretty
good indicator.  I don't know what benchmark that might be though.

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