[Linux-cluster] cman & qdiskd

[Jonathan Daniels]

Hi Sherwyn,

We use a Hewlett-Packard MSA 1000, connected to our servers (nodes) by 
DLogic 2300 fibre channels, which, if you have a spare £10,000, is fine. 
The partition I use has been turned into a GFS filesystem (get the GFS 
tools from the RedHat Network) which enables the shared storage to be 
mounted, and more importantly, written to without fear of corruption.

We also use TeraStations for our NFS servers which I believe are 
somewhat cheaper. Depends on the 'criticality' of your setup.

Thanks,
Jon




Sherwyn Greene wrote:

>Hi, I may not be able to help you with your problem, but maybe you can help
>me with one.
>
>1 What type of shared storage you have setup on your cluster?
>
>I'm tring to setup a cluster with 2 nodes and one shared storage for web
>pages & ftp 
>Can you help me?
>
>Thanks 
>
>
>Sherwyn Greene
>Planner / I.T. Technician
>Project Controls Dept.
>Kentz-OJ's E&I Services J.V.
>+1 (868) 648-0876
>
>-----Original Message-----
>From: linux-cluster-bounces at redhat.com
>[mailto:linux-cluster-bounces at redhat.com] On Behalf Of Katriel Traum
>Sent: Tuesday, October 17, 2006 2:12 PM
>To: linux clustering
>Subject: [Linux-cluster] cman & qdiskd
>
>-----BEGIN PGP SIGNED MESSAGE-----
>Hash: SHA1
>
>Hello.
>
>I've seen this subject on the list, but no real solutions.
>I'm using Cluster 4 update 4, with qdiskd and a shared disk.
>I've understood from the documentation and list that a "cman_tool status"
>should reflect the number of votes the quorum daemon holds.
>
>My setup is pretty straight forward, 2-node cluster, shared storage (AoE for
>testing).
>qdiskd configuration:
><quorumd interval="1" tko="5" votes="3" log_level="7" device="/dev/ether
>d/e0.0" status_file="/tmp/qdisk-status">
>                <heuristic program="ping 192.168.22.1 -c1 -t1" score="1"
>interval="2"/>
>                <heuristic program="ping 192.168.22.60 -c1 -t1"
>score="1" interval="2"/>
>                <heuristic program="ping 192.168.22.100 -c1 -t1"
>score="1" interval="2"/>
>        </quorumd>
>
>cman_tool status shows:
>[root at n1 ~]# cman_tool status
>Protocol version: 5.0.1
>Config version: 8
>Cluster name: alpha_cluster
>Cluster ID: 50356
>Cluster Member: Yes
>Membership state: Cluster-Member
>Nodes: 2
>Expected_votes: 2
>Total_votes: 2
>Quorum: 2
>Active subsystems: 4
>Node name: n1
>Node addresses: 192.168.22.201
>
>qdiskd is running, scoring a perfect 3 out of 3, but no votes...
>When disconnecting one of the nodes, the other will loose quorum. Am I
>missing something?
>
>Any insight appreciated.
>- --
>Katriel Traum, PenguinIT
>RHCE, CLP
>Mobile: 054-6789953
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