[Linux-cluster] Cluster online reconfiguration

[brem belguebli]

Hi,

by experience, all changed resources will be restarted once the cluster
version number is changed.Your resource will be restarted.
I didn't find any documentation about that, it is just "short" experience.

Among the funny experiences, suppose you have a service containing a lvm
resource child, which contains itself a FS child.

Your service is running under cluster control.

if you add a nfs export under this running resource, after updating the conf
(ccs_tool update), the whole service won't be restarted but only the
nfsexport will be online added.


2009/10/6 Johnson, Eric <Eric.Johnson at mtsallstream.com>

> Is there documentation that states how rgmanager handles online
> reconfiguration of cluster resources when issued a 'ccs_tool update
> /etc/cluster/cluster.conf'?
>
> I have some ext3 file systems under cluster control, and I want to
> change the force_fsck option from 1 to 0, but I'm not sure if this will
> trigger an unmount/remount of the file systems, which I definitely don't
> want happening.
>
> RHEL 5.4 32-bit
> Kernel 2.6.18-164.el5PAE
> rgmanager-2.0.52-1.el5
> cman-2.0.115-1.el5_4.2
> openais-0.80.6-8.el5
>
> Thanks,
> Eric
>
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