[DRBD-user] drbd and gfs

Mustafa A. Hashmi mahashmi at gmail.com
Thu Nov 2 06:38:58 CET 2006

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

I am not really replying to any of the recommendations because they
all work given requirements.

I will however also recommend that you have a look at the Lustre file
system which allows for local server storage to be shared across all
cluster nodes. Failover is supported natively, and with drbd
replication, the task is really quite simple and efficient.

Mail systems on Lustre however may not make a lot of sense --
especially running Maildir format. Maybe mbox would be a better idea
if one was to go that route. You can read more about Lustre on the
urls given below:

http://www.clusterfs.com && http://www.lustre.org


On 10/25/06, Leonardo Rodrigues de Mello
<Leonardo.Mello at planejamento.gov.br> wrote:
> Yes you can.
>  to be more correct to archive shared storage you need one block device that
> is available to all machines that will use the storage and one shared
> filesystem.
>  If you have only two machines, drbd 0.8 in primary/primary mode can be the
> block device solution.
>  If you have more than two machines, you will need to use other block device
> solution, like enbd, gnbd, iscsi or AOE.
>  For the shared filesystem you can use GFS or OCFS2.
>  You can use this(DRBD0.8+GFS or DRBD0.8+OCFS2) shared storage with two
> machines that is in one tcp/ip network. But remember Clusters usualy are
> strong connected and need large bandwidth and small latency. If you use this
> solution in one small link with high latency your performance wont be good.
> and in some environments it wont work (because the cluster heartbeat and
> global lock manager software)
>  Search google for: +drbd+ocfs2 and +drbd+gfs there is some results.
>  one of them is my page documenting the use of drbd0.8 + ocfs2.
> http://guialivre.governoeletronico.gov.br/seminario/index.php/DocumentacaoTecnologiasDRBDOCFS2
>  Best Regards
>  -----Mensagem original-----
>  De:     drbd-user-bounces at lists.linbit.com em nome de
> Alexander Lind
>  Enviada:        qua 25/10/2006 05:33
>  Para:   drbd-user at lists.linbit.com
>  Cc:
>  Assunto:        [DRBD-user] drbd and gfs
>  Hello All
>  I have read that you can achieve a shared storage solution by combining
>  GFS and DRBD somehow.
>  The idea being making it so i can have a shared and mirrored partition
>  on two separate machines connected via tcp/ip, that gives each machine
>  full r/w access.
>  Is this possible? Is using GFS / DRBD the answer?  Are there better
>  solutions?
>  Unfortunately I can't seem to find much info about this on the net, so
>  I'm hoping someone here can help me out! :)
>  Thanks
>  Alec
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