[DRBD-user] Sync speed (getting to the limit)

Eduardo Diaz - Gmail ediazrod at gmail.com
Mon Apr 9 16:27:28 CEST 2012

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


Don't use a direct connexion, I have many problems for this in the pass...
Is better buy a good switch (netgear has por 35€)...

On Fri, Apr 6, 2012 at 9:33 AM, Florian Haas <florian at hastexo.com> wrote:

> On Fri, Apr 6, 2012 at 3:10 AM, Brian R. Hellman <brian at linbit.com> wrote:
> >
> >
> > On 04/05/2012 05:58 PM, Marcelo Pereira wrote:
> >> Hi DRBD masters,
> >>
> >> I have been trying to push the sync speed to the limit, as the server
> >> was offline for a while and I will release it for general use only
> >> after it's sync'ed. So, nobody is using and I can use full speed.
> >>
> >> I have two servers, each one connected to a NAS unit through a CAT6
> >> cable, no switches in between. It's 1000 Mpbs full duplex, as the
> >> ethtool says.
> >>
> >> I tried to push to the limit, issuing the following:
> >>
> >> [~]# /sbin/drbdsetup /dev/drbd0 syncer -r 685M
> > Please note that this rate is in MB/sec not Mb/s, ideally you should set
> > it around 80% of your connection speed.
>
> Did the 30% recommendation change (for statically defined sync rates),
> and if it did, when and why?
> http://www.drbd.org/users-guide/s-configure-sync-rate.html does still
> mention it.
>
> Cheers
> Florian
>
> --
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> http://www.hastexo.com/now
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