Increase perfomance with external meta-disk driver...

[Gilberto Nunes-3]

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: [phone]
Celular: [phone]


Disse Jesus: Eu sou o Caminho, a Verdade e a Vida. Ninguém vem ao Pai 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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drbd-user mailing list
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[Christopher Chen]

Gilberto: what is the underlying hardware setup?

--
Chris Chen <muffaleta@...>

On Oct 30, 2009, at 4:03, Gilberto Nunes Ferreira <gilberto.nunes@...
 > 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: [phone]
> Celular: [phone]
>
>
> 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...
> <><
>
>
>
>
>
>
>
>
> _______________________________________________
> drbd-user mailing list
> drbd-user@...
> http://lists.linbit.com/mailman/listinfo/drbd-user

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[Gilberto Nunes-3]

Hi Crhistopher

I use a Dell PowerEdge T300 with 1 GB  of RAM, HD's SATA II.
I use two giga ethernet card too...

Search on google, I found some tricks to solve my problem about
performance.
(http://www.drbd.org/users-guide/s-throughput-tuning.html)

So, now /etc/drbd.conf is here:

global { usage-count no; }
common {
         syncer
        {
                rate 300M;
                al-extents 3389;
        }

        disk {
                no-disk-barrier;
                no-disk-flushes;
        }
}
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 8000;
                unplug-watermark 16;
                max-epoch-size 8000;
                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 /dev/sda4[0];
        }
        on kvm-1 {
                device /dev/drbd0;
                disk /dev/sda3;
                address 10.0.0.110:7788;
                meta-disk /dev/sda4[0];
        }
}

I happy now! :)

If you have some other suggestions, will welcome!

Thanks a lot

Best Regards



Em Sex, 2009-10-30 às 09:26 -0700, Christopher Chen escreveu:

> Gilberto: what is the underlying hardware setup?
>
> --
> Chris Chen <muffaleta@...>
>
> On Oct 30, 2009, at 4:03, Gilberto Nunes Ferreira <gilberto.nunes@...
>  > 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: [phone]
> > Celular: [phone]
> >
> >
> > 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...
> > <><
> >
> >
> >
> >
> >
> >
> >
> >
> > _______________________________________________
> > drbd-user mailing list
> > drbd-user@...
> > http://lists.linbit.com/mailman/listinfo/drbd-user

Gilberto Nunes Ferreira
TI
Selbetti Gestão de Documentos
Telefone: [phone]
Celular: [phone]


Disse Jesus: Eu sou o Caminho, a Verdade e a Vida. Ninguém vem ao Pai 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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drbd-user mailing list
drbd-user@...
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