On 08/11/2018 02:06 AM, NeilBrown wrote: > It might be expected behaviour with async direct IO. > Two threads writing with O_DIRECT io to the same address could result in > different data on the two devices. This doesn't seem to me to be a > credible use-case though. Why would you ever want to do that in > practice? > > NeilBrown My only thought is while the credible case may be weak, if it is something that can be protected against with a few conditionals to prevent the different data on the slaves diverging -- then it's worth a couple of conditions to prevent the nut that know just enough about dd from confusing things.... -- David C. Rankin, J.D.,P.E.
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