On 16/10/15 11:40 AM, Vallevand, Mark K wrote:
> Thanks.  I wasn't completely aware of corosync's role in this.  I see new 
> things in the docs every time I read them.
> 
> I looked up the corosync settings at one time and did it again:
>       token loss 3000ms
>       retransmits 10
> So 30s.  Redid my simple testing and got detection times of 22s, 26s, and 25s 
> using very crude methods.
> Any warnings about setting these values to something else?
> We require our customers to use an isolated, private network for cluster 
> communications.  All taken care of in our instructions and cluster 
> configuration scripts.  Network traffic will not be a factor.  So, I'm 
> thinking 1000ms and 5 retransmits as an experiment.

That is very high. I think the default is something like 236ms x 4 losses.

You do have fencing, right?

> I was pretty sure that DLM was just being informed by clustering, but I 
> needed to ask.
> 
> Again, thanks.
>       
> 
> Regards.
> Mark K Vallevand   [email protected] 
> <mailto:[email protected]> 
> Never try and teach a pig to sing: it's a waste of time, and it annoys the 
> pig.


-- 
Digimer
Papers and Projects: https://alteeve.ca/w/
What if the cure for cancer is trapped in the mind of a person without
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