[Ocfs2-users] Add a new node to ocfs cluster

[Sunil Mushran]

The o2cb cluster stack currently only allows adding new nodes
dynamically. All other ops, modify/del, require the cluster to be down.

Vanaclocha Llorens, Jose Lorenzo wrote:
> I'm sorry Sunil, but does it work only for add nodes?
>
> When we try to remove we get:
>
> ------------------------------------------------------------
> [root at raclab5 ~]# o2cb_ctl -D -n raclab3 -u
>
> o2cb_ctl: Not yet supported
>
> ------------------------------------------------------------
>
> Best regards,
>
> Llorenç Vanaclocha 
>
>
> -----Mensaje original-----
> De: Sunil Mushran [mailto:Sunil.Mushran at oracle.com] 
> Enviado el: lunes, 13 de marzo de 2006 19:20
> Para: Vanaclocha Llorens, Jose Lorenzo
> CC: ocfs2-users at oss.oracle.com
> Asunto: Re: [Ocfs2-users] Add a new node to ocfs cluster
>
> o2cb_ctl -C -n <hostname> -t node -a cluster=<clustername> -a 
> ip_address=<ip> -a ip_port=<port> -a number=<nodenum> -i
>
> For e.g.
> # o2cb_ctl -C -n node99 -t node -a cluster=clus5 -a 
> ip_address=192.168.0.99 -a ip_port=7777 -a number=99 -i
>
> Refer "man o2cb_ctl" for more details.
>
> Vanaclocha Llorens, Jose Lorenzo wrote:
>   
>> Many thanks for your help Sunil. One more question my final intention is to do it in a silent mode. Can the ocfs2console step be replaced with a sequence of commands?
>>
>> I mean, my final goal is add a node to an existing Oracle RAC automatically. Do you think that it is possible from the ocfs perspective?
>>
>> Best regards,
>>
>>
>> Llorenç Vanaclocha 
>>
>>
>> -----Mensaje original-----
>> De: Sunil Mushran [mailto:Sunil.Mushran at oracle.com] 
>> Enviado el: sábado, 11 de marzo de 2006 0:29
>> Para: Vanaclocha Llorens, Jose Lorenzo
>> CC: ocfs2-users at oss.oracle.com
>> Asunto: Re: [Ocfs2-users] Add a new node to ocfs cluster
>>
>> One can add nodes dynamically. Run ocfs2console on
>> all existing nodes to add the new node. Note adding on
>> one and propagating to others will not work. One needs
>> to add on each active node via ocfs2console.
>>
>> Once added, the new node should show up in
>> /config/cluster/<clustername>/nodes. Ensure you see the
>> new node on all active nodes.
>>
>> Then copy the updated cluster.conf to the new node and
>> start the cluster and mount.
>>
>> Vanaclocha Llorens, Jose Lorenzo wrote:
>>   
>>     
>>> Hi everybody,
>>>
>>> My problem is that I want to add a new node to an existing RAC with 
>>> ocfs2, without stop the database.
>>>
>>> If I add a new node to an existing ocfs cluster, do I need to stop the 
>>> ocfs in the others nodes of the cluster?
>>>
>>> I've tried to do it without stop the ocfs in the others nodes but I 
>>> get the following error:
>>>
>>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>
>>> [root at raclab3 ~]# mount.ocfs2 /dev/mapper/eva_d1 /u01/app/oracle
>>>
>>> mount.ocfs2: Transport endpoint is not connected while mounting 
>>> /dev/mapper/eva_d1 on /u01/app/oracle
>>>
>>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>
>>> I've three nodes: raclab3, raclab4 and raclab5. I'm trying to add 
>>> raclab3 to the existing cluster formed by raclab4 and raclab5.
>>>
>>> In the raclab3 I have the following folder:
>>>
>>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>
>>> [root at raclab3 ~]# ls -l /config/cluster/ocfs2/node/
>>>
>>> total 0
>>>
>>> drwxr-xr-x 2 root root 0 Mar 10 11:53 raclab3
>>>
>>> drwxr-xr-x 2 root root 0 Mar 10 11:47 raclab4
>>>
>>> drwxr-xr-x 2 root root 0 Mar 10 11:47 raclab5
>>>
>>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>
>>> But in the raclab4 and raclab5 I have:
>>>
>>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>
>>> [root at raclab5 ~]# ls -l /config/cluster/ocfs2/node/
>>>
>>> total 0
>>>
>>> drwxr-xr-x 2 root root 0 Mar 10 12:47 raclab4
>>>
>>> drwxr-xr-x 2 root root 0 Mar 10 12:47 raclab5
>>>
>>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>
>>> If I execute in both nodes:
>>>
>>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>
>>> [root at raclab5 ~]# /etc/init.d/o2cb disable
>>>
>>> Writing O2CB configuration: OK
>>>
>>> [root at raclab5 ~]# /etc/init.d/o2cb enable
>>>
>>> Writing O2CB configuration: OK
>>>
>>> Loading module "configfs": OK
>>>
>>> Mounting configfs filesystem at /config: OK
>>>
>>> Loading module "ocfs2_nodemanager": OK
>>>
>>> Loading module "ocfs2_dlm": OK
>>>
>>> Loading module "ocfs2_dlmfs": OK
>>>
>>> Mounting ocfs2_dlmfs filesystem at /dlm: OK
>>>
>>> Starting cluster ocfs2: OK
>>>
>>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>
>>> I get information of raclab3:
>>>
>>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>
>>> [root at raclab5 ~]# ls -l /config/cluster/ocfs2/node/
>>>
>>> total 0
>>>
>>> drwxr-xr-x 2 root root 0 Mar 10 12:51 raclab3
>>>
>>> drwxr-xr-x 2 root root 0 Mar 10 12:51 raclab4
>>>
>>> drwxr-xr-x 2 root root 0 Mar 10 12:51 raclab5
>>>
>>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>
>>> And finally I can mount my file system in the raclab3 node.
>>>
>>> Summarizing, is it possible to add a new node without stop the ocfs in 
>>> all the cluster nodes?
>>>
>>> Any help or comment will be welcome.
>>>
>>> Best regards,
>>>
>>> Llorenç
>>>
>>> ------------------------------------------------------------------------
>>>
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>>> Ocfs2-users mailing list
>>> Ocfs2-users at oss.oracle.com
>>> http://oss.oracle.com/mailman/listinfo/ocfs2-users
>>>   
>>>     
>>>       
>
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