[Linux-cluster] strange GFS problem

[Stanislav Sedov]

On Tue, Jun 14, 2005 at 03:14:57PM -0700, Igor wrote:
> I've a two node linux cluster.  Need to share 1 HD to
> read/write simultaneously, from either box.  Should
> either fail, I need the other to keep functioning.
> 
> I created 1 lvm on each server (changed lvm.conf as
> per instructions).  Did gfs_mkfs -- no errors.  Ran
> this (on each server)
> 
> > ccsd  
> > cman_tool join 
> > fence_tool join 
> > clvmd           
> > vgchange -aly   
> > mount -t gfs /dev/gfs_vg/lvol0 /data
> 
> No problem.  Now, when I create a file on each server,
> it doesn't appear on the other.  What's the deal?
> 
> (this is my cluster.conf:)
> <?xml version="1.0"?>
> <cluster name="acme_cluster" config_version="1">
> 
>   <cman two_node="1" expected_votes="1">
>   </cman>
> 
>   <clusternodes>
>     <clusternode name="10.1.1.1" votes="1">
>       <fence>
>         <method name="single">
>           <device name="human" ipaddr="10.1.1.1"/>
>         </method>
>       </fence>
>     </clusternode>
>     <clusternode name="10.1.1.2" votes="1">
>       <fence>
>         <method name="single">
>           <device name="human" ipaddr="10.1.1.2"/>
>         </method>
>       </fence>
>     </clusternode>
>   </clusternodes>
> 
>   <fence_devices>
>     <fence_device name="human" agent="fence_manual"/>
>   </fence_devices>
> 
> </cluster>
> 
> [root at acmegrid1 data]# cat /proc/cluster/status 
> Protocol version: 5.0.1
> Config version: 1
> Cluster name: acme_cluster
> Cluster ID: 14004
> Cluster Member: Yes
> Membership state: Cluster-Member
> Nodes: 2
> Expected_votes: 1
> Total_votes: 2
> Quorum: 1   
> Active subsystems: 6
> Node name: 10.1.1.1
> Node addresses: 10.1.1.1  
> 
> I'd really appreciate any help with this.  Thank you.
> 
> 
> 		
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> 
Have you properly select locking mechanism when mkfs_gfs?
It seems like you use lock_nolock.