[Pacemaker] exclusive activation of Volume Group

[Andrew Beekhof]

On Feb 17, 2009, at 10:27 AM, Romi Verma wrote:

> ok let me explain it bit more.
> i have configured lvm resource in cluster and it is running on node  
> A . as expected the vg is active on node A
>
> but from node B , if  i do vgchange -a y <vgname> , it becomes  
> active on node B also .and this is not affecting the lvm resource.  
> lvm resource is running fine on node A  as if nothing happend.
>
> i saw the lvm resource agent code . it is using only vgchange -a y  
> <vgname>  during resource start up and due to this it is happening.
> i expected it to , exclusivly activate the VG during resource start  
> up. (vgchange -a e )

submit a patch for the RA to the heartbeat project?

> do we have some other Resource agent which exclusivly activate the  
> VG during resource start up??

why not just fix the script?

>
>
>
> On Tue, Feb 17, 2009 at 2:40 PM, Andrew Beekhof <beekhof at gmail.com>  
> wrote:
>
> On Feb 17, 2009, at 10:03 AM, Romi Verma wrote:
>
> Hi All,
> i have just configured LVM resouce agent in pacemaker cluster.  i am  
> kind of suprised as it is not taking care of exclusive activation.
> am i missing something or LVM Resouce agent is written in this way  
> only. can anyone put some light here.
>
> You'll have to do better with the question first.
>
> By "exclusive activation" you mean that the cluster only starts it  
> in one place?
>
> The cluster goes to great lengths to ensure this and (except for  
> cloned resources) normally when resources "appear" to be active on  
> multiple nodes either the script is broken or the admin has  
> configured the nodes to start it at boot.
>
> But we'd need more than a vague question to be able to comment  
> further.
>
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