Re: Feature request: online fsync disable

[Oleg Drokin <green@namesys.com>]

Hello!

On Fri, Aug 23, 2002 at 03:52:38PM +0400, Nikita Danilov wrote:
>  > I have a server running which sometimes gets very busy. The
>  > running application issues lots of fsync() calls. If it gets
>  > very busy, it sometimes is not as fast as required. I
>  > believe that most of the time is spent in processing fsync()
>  > (commit journal, etc.). In such a situation, I'd like to
>  > switch off all fsync()s and risk data loss instead of hours
>  > of processing time, which in my case is more important.
>  > 
>  > Is implementing such a feature possible? It may be used as
>  > follows:
>  > 
>  > mount /partition -o remount,disableFsync
>  > 
>  > and undone as follows:
>  > 
>  > mount /partition -o remount,enableFsync
> I don't know your particulars, but one way to do such thing is to write
> small shared library implementing no-op fsync() function and to use
> LD_PRELOAD.

Also there is http://namesys.com/support.html page that describes how one
can get NAMESYS to write virtually any reiserfs feature ;)

Bye,
    Oleg