[Linux-cluster] Why does GFS2 freeze?
Digimer
lists at alteeve.ca
Wed Nov 27 15:25:25 UTC 2013
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 at uplink.ua <mailto:v.melnik at 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
>
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>
>
> --
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>
>
--
Digimer
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