[Linux-cluster] GFS Issue

[Stewart Walters]

lakshmana swamy wrote:
>
>   Hi Friends,
>
>  I have configured gfs on RHEL 5.2, While mounting It gives the 
> following error messages.
>
> ====================
>
> [root at lvs1 ~]# mount -t gfs  -v /dev/sdb1 /share/
> /sbin/mount.gfs: mount /dev/sdb1 /share
> /sbin/mount.gfs: parse_opts: opts = "rw"
> /sbin/mount.gfs:   clear flag 1 for "rw", flags = 0
> /sbin/mount.gfs: parse_opts: flags = 0
> /sbin/mount.gfs: parse_opts: extra = ""
> /sbin/mount.gfs: parse_opts: hostdata = ""
> /sbin/mount.gfs: parse_opts: lockproto = ""
> /sbin/mount.gfs: parse_opts: locktable = ""
> /sbin/mount.gfs: message to gfs_controld: asking to join mountgroup:
> /sbin/mount.gfs: write "join /share gfs lock_dlm laxman:gfs rw /dev/sdb1"
> */sbin/mount.gfs: fs is for a different cluster
> /sbin/mount.gfs: error mounting lockproto lock_dlm*
> [root at lvs1 ~]#
>
> ===================
>  log messages here
> *
> Feb  1 19:52:23 lvs1 gfs_controld[7267]: mount: fs requires 
> cluster="laxman" current="locuz"
> Feb  1 19:59:46 lvs1 gfs_controld[7267]: mount: fs requires 
> cluster="laxman" current="locuz"
> *
> =======
>
>  I have installed all the necessary packages. But Iam unable to figure 
> out whats the problem, pls help me !!!
>
>  Thanking you
>
> laxman
>  
>
>
>  
>
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GFS volumes are tagged to the cluster they are locked by.  This is done 
when they are created.

I've never seen this message before, but it seems straight forward - the 
cluster name defined in /etc/cluster/cluster.conf is different from the 
one tagged on the GFS volume.  In this case the cluster name in 
/etc/cluster/cluster.conf is defined as "locuz", but the GFS volumes 
were tagged as belonging to "laxman"

Check cluster.conf:

[root at clusternode01 ~]# cat /etc/cluster/cluster.conf|grep config_version
<cluster alias="cluster01" config_version="228" name="cluster01">

Now check the GFS volume:

[root at clusternode01 ~]# gfs_tool list
18146975903901458037 dm-2 cluster01:gfs.0

You'll probably find in your case that name="cluster01" and 
"cluster01:gfs" don't match.

To change it, unmount the volume from all nodes, then check out the "man 
gfs_tool" for the "gfs_tool sb device table" command for how to modify 
the GFS volume.  Also check 
https://wiki.ncl.cs.columbia.edu/wiki/index.php/GFS_Initialization for 
an example on how to use the command.

Regards,

Stewart