[Ocfs2-users] Question about increasing node slots

[Marcos E. Matsunaga]

The console does that (You can use the console to add a new node).
tunefs.ocfs2 is actually the tool that will change the superblock to add
more slots (see the man pages) and it is called by the console (a more
user friendly interface) to perform the action.

o2cb_ctl only defines the new node(s) on the existing nodes that are
running.

Regards,

Marcos Eduardo Matsunaga

Oracle USA
Linux Engineering





Tim Lank wrote:
> 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
>>>
>>> _______________________________________________
>>> Ocfs2-users mailing list
>>> Ocfs2-users at oss.oracle.com
>>> http://oss.oracle.com/mailman/listinfo/ocfs2-users
>>>
>>>       
>
>   
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