LARGE single-system Cyrus installs?

Rob Banz rob at
Tue Nov 20 16:01:20 EST 2007

On Nov 20, 2007, at 14:57, Pascal Gienger wrote:

> Rob Banz <rob at> wrote:
>> We went through a similar discussion last year in OpenAFS land, and
>> came the same conclusion -- basically, if your filesystem is
>> reasonably reliable (such as ZFS is), and you can trust your
>> underlying storage not to lose transactions that are in-cache  
>> during a
>> 'bad event', the added benefit of fsync() may be less than its
>> performance cost.
> Would'nt it be nice to have a configuration option to completely  
> turn off fsync() in Cyrus? If you want, with a BIG WARNING in the  
> doc stating NOT TO USE IT unless you know what you doing. :)

That's basically what we did with the AFS volserver & fileserver.   
Oddly, when the patch got integrated into the OpenAFS code, they  
didn't like the idea of it being an option and made it the default ;)

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