[DRBD-user] performance under difficult circumstances

Richard Hector richard at catalyst.net.nz
Tue Aug 25 01:40:32 CEST 2009

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


On Fri, 2009-08-21 at 23:21 +1200, Richard Hector wrote:
> On Fri, 2009-08-21 at 08:34 +0200, Stefan Seifert wrote:
> > Hi Richard,
> > 
> > On Friday, 21. August 2009, Richard Hector wrote:
> > 
> > > I'm aiming for a 3-way setup, with 2 local (proto C) and one remote
> > > (proto A) box.
> > >
> > > The two local machines are connected by a direct Gbit link (same rack);
> > > the other is over the internet (theoretical max 100Mbit I think;
> > > practically probably much lower) with a RTT of around 18ms.
> > 
> > > Can anyone offer any suggestions? I'm obviously happy to attempt to
> > > answer questions, since I know my description is inadequate :-)
> > 
> > DRBD proxy comes to my mind: http://www.drbd.org/users-guide/s-drbd-proxy.html
> 
> Yes, it looks like it would deal with the issues I'm having nicely.

Given there's a need for it, I guess there's limited chance of there
being another way to directly solve that problem.

Is the disconnected + cron sync method likely to do what I want? The
sync doesn't resend all the data, right? Just the updates? So running
the cronjob every 15-30 minutes should be fine?

Thanks,

Richard

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