On 10/24/2016 04:51 AM, mark wrote:
Absolutely add nobarrier, and see what happens.
Using "nobarrier" might increase overall write throughput, but it removes an important integrity feature, increasing the risk of filesystem corruption on power loss. I wouldn't recommend doing that unless your system is on a UPS, and you've tested and verified that it will perform an orderly shutdown when the UPS is on battery power and its charge is low.
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