[Linux-cluster] mounting a replicated lun

[Paras pradhan]

Great . I will test and let you guys know how it goes. Meanwhile you guys
can answer me a question.

a) I have a lun (gfs2) mounted to /test
b) I replicate it
c) I undefine my original lun from this cluster node
d) I now assign the replicated lun to the same cluster node
e) I issue a lip

Since the luns are same in all aspects, will it automatically configure
itself the new one and mount it to /test?


Thanks!
Paras.


On Wed, Nov 20, 2013 at 4:05 PM, Bob Peterson <rpeterso at redhat.com> wrote:

> ----- Original Message -----
> | I have a LUN which is mounted as gfs2. We replicated this LUN and will
> need
> | to mount this replicated LUN to another mount point. To create a gfs2
> mount
> | point what I do is:  pvcreate , vgcreate -c , lvcreate then mkfs.gfs2 .
> But
> | since this replicated it has already data on it .how do we mount this?
> |
> | This is CentOS/RHEL 5.
> |
> | Thanks
> | Paras.
>
> If you're trying to preserve the data and mount the copy, you would
> ordinarily need to change the file system name in the gfs2 superblock.
> One way you can do this is something like this:
>
>  gfs2_tool sb /dev/device table "your_cluster_name:fs_copy"
>
> If you mean to mount the copy outside the cluster, you could just change
> the locking protocol to lock_nolock:
>
>  gfs2_tool sb /dev/device proto "lock_nolock"
>
> However, digimer is correct that the commands you did would have wiped out
> any existing data.
>
> Regards,
>
> Bob Peterson
> Red Hat File Systems
>
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