[Linux-cluster] What versions of the linux, cluster, dm and lvm2 tend to work well togther???

[Patrick Caulfield]

CAugustine at overlandstorage.com wrote:
> 
> Hi Everyone,
> 
> I am running with the 2.6.10-1.770_FC3CRAW.root linux kernel,
> which I built it to support raw devices.
> 
> I downloaded the CVS sources for RHEL4 branch of the cluster
> and the LVM2, and the device-mapper sources are from the HEAD
> of the CVS tree. I built and installed them on both of my linux systems.
> 
> After rebooting:
> 
> The ccsd command is executed successfully on both nodes.
> The "cman_tool join" command executed on both nodes eventually
> shows the msg:                 Cluster is quorate.  Allowing connections.
> 
> However, looking at the /proc/cluster/nodes files on both systems,
> I see the following:
> 
>         Node  Votes Exp Sts  Name
>            1    1    1   M   ovn01
> 
>         Node  Votes Exp Sts  Name
>            2    1    1   M   ovn02
> 
> Why on ovn02 node, Node=2 and on ovn01 Node=1?
> Has each node created a cluster on its own? Some sort of brain split???

Yep that's a split brain. If expected_votes was set (correctly) to 2
then you wouldn't have quorum. /never/ set expected_votes to 1 on a real
system. "cman_tool join" will set it to the total number of nodes in
ccsd so check you have the same custer.conf file on both nodes.

I worry that your syslog still names the host "localhost", that might
easily be a network misconfiguration which would cause nodes not to be
able to see each other.

> Then, I ran "fence_tool join" successfully on both systems.
> However, the "clvmd" cmd gave me the following messages on
> both systems:
> 
>         Apr 20 10:06:09 localhost clvmd: Unable to create lockspace for
>                                              CLVM: Inappropriate ioctl
> for device

Are you sure this is up-to-date ? creating a lockspace hasn't been an
ioctl operation for months now.
-- 

patrick