Re: GFS: GULM vs. DLM

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Eric Anderson wrote:
> Wendy Cheng wrote:
> 
>> Anthony Assi wrote:
>>
>>> Hi,
>>>
>>> I would like to know which locking method you guys think is more
>>> preferable to implement on a 36 nodes Cluster (V20Z);
>>> The Distributed Lock Manager (dlm) or the Grand Unified Locking
>>> Manager (gulm) ?
>>>
>> DLM without doubts (since gulm is mostly in maintenance mode)
> 
> 
> 
> I recently talked with someone at RedHat (can't recall his name
> unfortunately) through a salesperson, and he claimed anything over about
> 20 nodes should use GULM instead.  Is that not true?  How about the max
> of 256 nodes?

DLM hasn't been much tested in midsize clusters. I haven't run it on anything
larger than 31 nodes though that's largely down to a lack of hardware :)

-- 

patrick

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