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

[Vanaclocha Llorens, Jose Lorenzo]

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:

 

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[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

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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:

 

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[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

 

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But in the raclab4 and raclab5 I have:

 

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[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

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If I execute in both nodes:

 

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[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

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I get information of raclab3:

 

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[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

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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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