Re Re: [Linux-cluster] mount file system GFS

Michael Conrad Tadpol Tilstra mtilstra at
Thu Jan 13 14:10:26 UTC 2005

On Thu, Jan 13, 2005 at 12:28:15PM +0100, maria perez wrote:
>   >Michael Conrad Tadpol Tilstra
>   >run dmesg to get more info about why it cannot mount.
>  >Did you remember to start lock_gulmd?
> Certainly, thank you very much!
> But now I have another problem.:Only the node stablished like server 
> lock_gulm can mount the file system, the second node hang. Why??
> The nodes' names are different and each node  the file /etc/hosts contains:
>    localhost.localdomain      localhost
>    machinename.domain    machinename

If your /etc/hosts file is actually setting the ip of nodes in your
cluster to, lock_gulmd will not work.

> I have another question: I have read the number of lock_gulm servers only 
> can be 1, 3 or 5, not 2. Is right?

yes.  3,4, and 5 servers run in a mini cluster to avoid a single point of
failure.  1 server runs as a single point of failure, but is useful for

> I am thinking established the two nodes like servers lock_gulm, will be 
> this correct?

I am sorry, but I don't quite understand this question.

You can setup two nodes, both as servers, (by putting three nodes in the
servers list and not using one of the entries.)  But if one node dies
the other will hang.  It can be done, with gulm it is not advisable.

Michael Conrad Tadpol Tilstra
I am having an out of money experience. 
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