[Linux-cluster] GFS in cluster

[Paras pradhan]

On Thu, Apr 29, 2010 at 6:47 PM, Srija <swap_project at yahoo.com> wrote:

> Thanks  for your reply.
>
> I am aware of  system-config-cluster also I do configurations  from command
> line. I am
> just not clear of the document which is explained in conga.
>
> What type of service do i need to create and what are the resources I need
> to create
> in that service.  If you explain me that will be really appreciated.
>
>
You only need a Virtual machine service and a Failover domain(s). See "Add a
virtual machine service" in conga.

Paras.


> If you check my first email, that was my question only.
>
> Thanks again
>
>
>
> --- On *Thu, 4/29/10, Paras pradhan <pradhanparas at gmail.com>* wrote:
>
>
> From: Paras pradhan <pradhanparas at gmail.com>
> Subject: Re: [Linux-cluster] GFS in cluster
> To: "linux clustering" <linux-cluster at redhat.com>
> Date: Thursday, April 29, 2010, 4:51 PM
>
>
> I found luci to be easier.. so I used that. But stopped using it also since
> Luci is a crap if you have multi path devices and storage clvm cluster. Now
> I am using command line tools to create/modify GFS shares and vi to edit
> /etc/cluster.conf file.
>
> I guess the redhat docs explains how to use system-config-cluster.
>
> Paras.
>
>
> On Thu, Apr 29, 2010 at 3:18 PM, Srija <swap_project at yahoo.com<http://mc/compose?to=swap_project@yahoo.com>
> > wrote:
>
>> 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 at gmail.com<http://mc/compose?to=pradhanparas@gmail.com>
>> >* wrote:
>>
>>
>> From: Paras pradhan <pradhanparas at gmail.com<http://mc/compose?to=pradhanparas@gmail.com>
>> >
>>
>> Subject: Re: [Linux-cluster] GFS in cluster
>> To: "linux clustering" <linux-cluster at redhat.com<http://mc/compose?to=linux-cluster@redhat.com>
>> >
>> Date: Tuesday, April 27, 2010, 3:40 PM
>>
>>
>>
>>
>> On Tue, Apr 27, 2010 at 1:43 PM, Srija <swap_project at yahoo.com<http://us.mc1128.mail.yahoo.com/mc/compose?to=swap_project@yahoo.com>
>> > 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 at redhat.com<http://us.mc1128.mail.yahoo.com/mc/compose?to=swhiteho@redhat.com>>
>>> wrote:
>>>
>>> > From: Steven Whitehouse <swhiteho at redhat.com<http://us.mc1128.mail.yahoo.com/mc/compose?to=swhiteho@redhat.com>
>>> >
>>> > Subject: Re: [Linux-cluster] GFS in cluster
>>> > To: "linux clustering" <linux-cluster at redhat.com<http://us.mc1128.mail.yahoo.com/mc/compose?to=linux-cluster@redhat.com>
>>> >
>>> > 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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>>> > https://www.redhat.com/mailman/listinfo/linux-cluster
>>> >
>>>
>>>
>>>
>>>
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