[Cluster-devel] [PATCH] [1/2] dlm: make lowcomms selectable by user

[Patrick Caulfield]

Patrick Caulfield wrote:
(resend as two patches to see if the mailing list is more amenable)

> This patch makes the lowcomms protocol selectable by the user before the DLM is
> started rather than having only one available, decided at compile time.
> 
> The best way to do this is to have dlm-controld read ccs and write 0 (TCP) or 1
> (SCTP) into the sysfs file that controls it.
> 
> We will need this when SCTP become a viable protocol for the DLM so that people
> can upgrade easily and to give them a sensibly-selectable option without
> recompiling the kernel.
> 
> The alternative way of doing this would be to have separate modules for tcp &
> sctp...I think this solution is better because it is more reliably controlled
> via dlm_controld & ccs and this means that all nodes in the cluster will be
> using the same transport. The memory overheads of having both loaded at once are
> minimal.
> 
> Dave/Steve: Can you check this is OK with your criterea (eg is it OK for sysfs,
> does Kconfig look right!) for committing it please  ?
> 
> Signed-Off-By: Patrick Caulfield <pcaulfie at redhat.conm>
> 


-- 

patrick
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