Re: GFS in cluster

[Srija <swap_project@xxxxxxxxx>]

Thanks Paras,

 

Can it be possible to send similar configuration using system-config-cluster.  Or if you can

give me some pointers to use the similar configuration using system-config-cluster that will be really appreciated.

 

Thanks again

 

--- On Tue, 4/27/10, Paras pradhan <pradhanparas@xxxxxxxxx> wrote:

From: Paras pradhan <pradhanparas@xxxxxxxxx>
Subject: Re: GFS in cluster
To: "linux clustering" <linux-cluster@xxxxxxxxxx>
Date: Tuesday, April 27, 2010, 3:40 PM

On Tue, Apr 27, 2010 at 1:43 PM, Srija <swap_project@xxxxxxxxx> wrote:

Hi ,

Sorry for replying in late, became busy with other work.

I have gone through the document you mentioned. I have already mounted  the GFS on each node. I am building the guests on this GFS file system and all the nodes are  zen hosts.

My question is,  the file system will be available from each node but the guests will be only available from the node from where the xm create is being executed.

 - Suppose the guests are in node1. Now if node1 gone down then all the
   guests will go down too. But if the guests are enabled from all the
   nodes then if node1 gone down, then still in the other nodes the guests
   are running.

 - That's why  my first email is for that should I need to create any
   service so  that if any script is being set under the service and in
   that script ,I can mention xm create create etc etc, to bring up the
   guests in other node and so on.

So pl. advice me now what will be the best procedure  to follow in the
above scenario which I mentioned.

If you have GFS mounted on all the nodes, then you need to create your xen hosts on that shared GFS partition and then create virtual machine services to control(recovery,restart)  the xen hosts. You can do that from Luci.

This might help you

http://magazine.redhat.com/2007/08/23/automated-failover-and-recovery-of-virtualized-guests-in-advanced-platform/

Paras.

 

Thanks again




--- On Tue, 4/20/10, Steven Whitehouse <swhiteho@xxxxxxxxxx> wrote:

> From: Steven Whitehouse <swhiteho@xxxxxxxxxx>
> Subject: Re: [Linux-cluster] GFS in cluster
> To: "linux clustering" <linux-cluster@xxxxxxxxxx>
> Date: Tuesday, April 20, 2010, 4:48 AM

> Hi,
>
> On Mon, 2010-04-19 at 13:31 -0700, Srija wrote:
> > Hi,
> >
> >  I have created a GFS filey system  as
> shared between three nodes clusters.
> >  The file system is being mounted in
> >  the three nodes and I set the mount points in
> the /etc/fstab,
> >
> >  Want to know how the cluster will keep the track
> of the GFS file system.
> >  How the fence/lock_dlm will work?
> >
> >  Do i need to set the GFS in a service? If yes ,
> what will be the
> >  resources under the service?
> >
> >  Will be really appreciated if I get some
> document to proceed further.
> >
> >  Thanks.
> >
> >
> You don't need to set GFS up as a service. Its
> automatically available
> on each node its mounted on. Have you seen the docs here?:
>
> http://www.redhat.com/docs/manuals/enterprise/
>
> That should be enough to get you started,
>
> Steve.
>
>
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> Linux-cluster mailing list
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> https://www.redhat.com/mailman/listinfo/linux-cluster
>




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