[Cluster-devel] unfencing

[David Teigland <teigland@redhat.com>]

On Mon, Feb 23, 2009 at 01:22:26PM -0600, Ryan O'Hara wrote:
> On Mon, Feb 23, 2009 at 01:09:58PM -0600, David Teigland wrote:
> > On Mon, Feb 23, 2009 at 07:52:55PM +0100, Fabio M. Di Nitto wrote:
> > > > A node unfences *itself* when it boots up.  As such, power-unfencing doesn't
> > > > make sense; unfencing is only meant to reverse storage fencing.
> > > 
> > > What can stop a user to run fence_node -U from another node to do remote
> > > (un)fencing?
> > 
> > It would work.  Users can do anything they like, that's beside the point.
> > 
> > The point is to make storage fencing more practical by automating storage
> > unfencing.  Otherwise, users have to invent ad hoc methods of doing it
> > themselves, often manually.  And, we end up solving the problem in painful,
> > one-off cases like scsi_reserve/fence_scsi, which cry out for a better
> > approach.
> 
> I was going to ask about this. From the sounds of it, we could
> elimiate the need for scsi_reserve completly. At least I can't think
> of any reason that it could not me eliminated at this point.

Yep, that's the idea.