[ClusterLabs] OS Patching Process

[AP]

On Tue, Nov 22, 2016 at 05:22:21PM +0000, Jason A Ramsey wrote:
> I’ve done the opposite:
> 
> lvm on top of drbd -> iscsi lun
> 
> but I’m not trying to resize anything. I just want to patch the OS
> of the nodes and reboot them in sequence without breaking things (and,
> preferably, without taking the cluster offline).

Are you ensuring that nothing is using that node's drbd before reboot?
And if so, how?

AP