On Fri, Aug 18, 2017, at 05:58 PM, Tim Connors wrote:
> > On 17 August 2017 1:37:24 pm AEST, Tim Connors via luv-main 
> > <[email protected]> wrote:
> > >Both XFS and btrfs enthusiastically like to silently throw any data
> > >written
> > >in the past 5 days on the floor when there's a power failure/kernel
> > >panic,
> > >so there's that commonality.
> >
> > See O_PONIES. Applications not using the API correctly to safely store data 
> > to disk are the problem.
> >
> > There's mitigation in XFS for a number of years now.
> 
> Yes I know all about libeatmydata, but you'll agree the race condition
> doesn't extend to 5 days after close(), right?

It could, it entirely depends on what you have configured... you can
make the kernel *very* unwilling to write things back to disk. 5 days
sounds long, and I haven't heard of anything *that* long, but I wouldn't
be surprised if you could configure the kernel and run workloads in a
way that it could happen..
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