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Re: [Linux-cluster] Why does GFS2 freeze?



This is exactly right. You *must* configure real fencing. If your nodes
have IPMI (or iLO, DRAC, etc), you should be able to configure and use
fence_ipmilan.

The reasons for this are explained here:

https://alteeve.ca/w/AN!Cluster_Tutorial_2#Concept.3B_Fencing

digimer

On 27/11/13 10:15, emmanuel segura wrote:
> Because you don't have fencing configured
> 
> 
> 2013/11/27 Vladimir Melnik <v melnik uplink ua <mailto:v melnik uplink ua>>
> 
>     Dear colleagues,
> 
>     Thank you all for all your yesterday's help. Alas, I had to reboot both
>     nodes about 5am, because the situation has gone critical.
> 
>     Now I built almost the same cluster in a lab. Its configuration is
>     REALLY
>     simple:
> 
>     <?xml version="1.0"?>
>     <cluster name="cluster1" config_version="1">
>       <cman two_node="1" expected_votes="1"/>
>       <clusternodes>
>         <clusternode name="vlan201.eth0.host1.lab.***.net" votes="1"
>     nodeid="1"/>
>         <clusternode name="vlan201.eth0.host2.lab.***.net" votes="1"
>     nodeid="2"/>
>       </clusternodes>
>       <fencedevices/>
>       <rm>
>         <failoverdomains/>
>         <resources/>
>       </rm>
>     </cluster>
> 
>     I started iscsi, cman, clvmd, gfs2 and rgmanager. When I'm
>     disconnecting a
>     node, the second node can't work with the same filesystem: any
>     attempt to
>     open some file just waits. But when I'm reconnecting the node back,
>     files
>     are opening and all is working.
> 
>     I'm sorry if it's a noob's question, but why does it ignore "<cman
>     two_node="1" expected_votes="1"/>"?
> 
>     Thank you!
> 
>     --
>     V.Melnik
> 
>     --
>     Linux-cluster mailing list
>     Linux-cluster redhat com <mailto:Linux-cluster redhat com>
>     https://www.redhat.com/mailman/listinfo/linux-cluster
> 
> 
> 
> 
> -- 
> esta es mi vida e me la vivo hasta que dios quiera
> 
> 


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


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