[Ocfs2-users] Question about increasing node slots

[Tim Lank]

So does the o2cb_ctl command touch the ocfs2 filesystem superblock and
increase the node slot value in this example?


>>From
>> http://oss.oracle.com/projects/ocfs2/dist/documentation/ocfs2_faq.html
>
> 19 - How do I add a new node to an online cluster?
> You can use the console to add a new node. However, you will need to
> explicitly add the new node on all the online nodes. That is, adding on
> one node and propagating to the other nodes is not sufficient. If the
> operation fails, it will most likely be due to bug#741
> <http://oss.oracle.com/bugzilla/show_bug.cgi?id=741>. In that case, you
> can use the o2cb_ctl utility on all online nodes as follows:
>
> 	# o2cb_ctl -C -i -n NODENAME -t node -a number=NODENUM -a
> ip_address=IPADDR -a ip_port=IPPORT -a cluster=CLUSTERNAME
>
> Ensure the node is added both in /etc/ocfs2/cluster.conf and in
> /config/cluster/CLUSTERNAME/node on all online nodes. You can then
> simply copy the cluster.conf to the new (still offline) node as well as
> other offline nodes. At the end, ensure that cluster.conf is consistent
> on all the nodes.
>
> 20 - How do I add a new node to an offline cluster?
>
> You can either use the console or use o2cb_ctl or simply hand edit
> cluster.conf. Then either use the console to propagate it to all nodes
> or hand copy using scp or any other tool. The o2cb_ctl command to do the
> same is:
>
>         # o2cb_ctl -C -n NODENAME -t node -a number=NODENUM -a
> ip_address=IPADDR -a ip_port=IPPORT -a cluster=CLUSTERNAME
>
> Notice the "-i" argument is not required as the cluster is not online.
>
>
> Regards,
>
> Marcos Eduardo Matsunaga
>
> Oracle USA
> Linux Engineering
>
>
>
>
>
> Tim Lank wrote:
>> We have a test 10gR2 RAC cluster using ocfs2 filesystems for the
>> Clusterware files and the Database files.
>>
>> We need to increase the node slots to accomodate new RAC nodes.  Is it
>> true that we will need to umount these filesystems for the upgrade (i.e.
>> Database and Clusterware also)?
>>
>> We are planning to use the following command format to perform the node
>> slot increase:
>>
>> # tunefs.ocfs2 �N 3 /dev/mapper/mpath1p1
>>
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>>
>