[ClusterLabs] DLM in the cluster can tolerate more than one node failure at the same time?

[Gang He]

Hi Christine,

Thank for your explanation.
Originally, there is concurrent fence feature in Pacemaker, you clear my doubt :-) 

Thanks
Gang

> -----Original Message-----
> From: Users [mailto:users-bounces at clusterlabs.org] On Behalf Of christine
> caulfield
> Sent: 2019年10月23日 15:09
> To: users at clusterlabs.org
> Subject: Re: [ClusterLabs] DLM in the cluster can tolerate more than one node
> failure at the same time?
> 
> On 22/10/2019 07:15, Gang He wrote:
> > Hi List,
> >
> > I remember that master node has the full copy for one DLM lock
> > resource and the other nodes have their own lock status, then if one node is
> failed(or fenced), the DLM lock status can be recovered from the remained
> node quickly.
> > My question is,
> > if there are more than one node which are failed at the same time, the DLM
> lock service for the remained nodes in the cluster can still continue to work
> after recovery?
> >
> >
> 
> Yes. The local DLM keeps a copy of its own locks and the remaining DLM
> nodes will collaborate to re-master all of the locks that they know about.  The
> number of nodes that leave at one time has no impact on this.
> 
> Chrissie
> 
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