Re: Severe slowdown caused by jbd2 process

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On 01/22/2011 02:34 AM, Ted Ts'o wrote:
....

At the end of the day, though, if the application protocol design is
stupid, there's not much you can do.
....

Thanks for your reply.
You are right, now I'm starting to understand that what I was trying to achieve was actually a change in the application logic...

I'd have a different question now:
Is the fsync in a nobarrier mount totally swallowed?
If not:
a) what guarantees does it provide in a nobarrier situation and
b) is there a "fakefsync" mount option or some other way to make it a no-op? (I understand the risk, and the fact that this is actually a change in the application's logic)
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