[DRBD-user] Increase perfomance with external meta-disk driver...

Christopher Chen muffaleta at gmail.com
Fri Oct 30 17:26:26 CET 2009


Gilberto: what is the underlying hardware setup?

--
Chris Chen <muffaleta at gmail.com>

On Oct 30, 2009, at 4:03, Gilberto Nunes Ferreira <gilberto.nunes at selbetti.com.br 
 > wrote:

> Hi
>
> I am very newbie on DRBD...
> But I am search with some tricks to improve performance.
> I deploy a drbd resource and use this drbd.conf:
>
> global { usage-count no; }
> common {
>         syncer
>        {
>                rate 200M;
>                al-extents 3833;
>        }
>
>        disk {
>                no-disk-barrier;
>                no-disk-flushes;
>                no-md-flushes;
>                use-bmbv;
>        }
> }
> resource r0 {
>        protocol C;
>        startup {
>                wfc-timeout 15;
>                degr-wfc-timeout 60;
>                become-primary-on both;
>        }
>        net {
>                sndbuf-size 0;
>                rcvbuf-size 0;
>                max-buffers     16384;
>                unplug-watermark   16384;
>                max-epoch-size  16384;
>                cram-hmac-alg sha1;
>                shared-secret "drbd123";
>                allow-two-primaries;
>                after-sb-0pri discard-zero-changes;
>                after-sb-1pri discard-secondary;
>                after-sb-2pri disconnect;
>       }
>       on kvm-0 {
>                device /dev/drbd0;
>                disk /dev/sda3;
>                address 10.0.0.100:7788;
>                meta-disk internal;
>        }
>        on kvm-1 {
>                device /dev/drbd0;
>                disk /dev/sda3;
>                address 10.0.0.110:7788;
>                meta-disk internal;
>        }
> }
>
>    The net adresses run on gigabyte network cards with crossover
> pathcable....
>
>    Google's results show me some testimonial that an external meta- 
> disk
> can be used to improve some performance...
>
>    My question is: Is that true? If yes, how can I do to have external
> driver to do meta-disk???
>
>   Thanks
>
> Gilberto Nunes Ferreira
> TI
> Selbetti Gestão de Documentos
> Telefone: +55 (47) 3441-6004
> Celular: +55 (47) 8861-6672
>
>
> Disse Jesus: Eu sou o Caminho, a Verdade e a Vida. Ninguém vem ao Pa 
> i a
> não ser por Mim.
> Jesus said: I am the Way, the Truth and the Life. Nobody goes to  
> Father
> without Me...
> <><
>
>
>
>
>
>
>
>
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