[Ocfs2-devel] [PATCH 0/6] nocontrold: Eliminating ocfs2_controld v4

[Mark Fasheh]

On Fri, Oct 18, 2013 at 09:44:54AM -0500, Goldwyn Rodrigues wrote:
> Hi,
> 
> This is an effort of removing ocfs2_controld.pcmk and getting ocfs2 DLM
> handling up to the times with respect to DLM (>=4.0.1) and corosync
> (2.3.x). AFAIK, cman also is being phased out for a unified corosync
> cluster stack.

Thanks again for doing this work. I'm about halfway done with the patches
when I write this but things seem to be coming along well.


> fs/dlm performs all the functions with respect to fencing and node
> management and provides the API's to do so for ocfs2. For all future
> references, DLM stands for fs/dlm code.
> 
> The advantages are:
>  + No need to run an additional userspace daemon (ocfs2_controld)
>  + No contrrold devince handling and controld protocol
>  + Shifting responsibilities of node management to DLM layer
> 
> For backward compatibility, we are keeping the controld handling code. Once
> enough time has passed we can remove a significant portion of the code.

Can you give us some brief details on how backwards compatibility was
tested? I have a feeling that it would alleviate some concerns we had about
that when the 1st series hit ocfs2-devel.
	--Mark

--
Mark Fasheh