[Cluster-devel] Re: fence-agents: master - fencing: New option '--missing-as-off' to return OFF is machine is missing

[David Teigland <teigland@redhat.com>]

> fencing: New option '--missing-as-off' to return OFF is machine is missing
> 
> If a blade is not present (i.e. removed for maintenance), the fence_bladecenter
> cannot check the state as it is reported empty.
> 
> Resolves: bz#248006

> --- a/fence/agents/bladecenter/fence_bladecenter.py
> +++ b/fence/agents/bladecenter/fence_bladecenter.py
> @@ -30,7 +30,10 @@ def get_power_status(conn, options):
>  		i = conn.log_expect(options, [ node_cmd, "system>" ] , int(options["-Y"]))
>  		if i == 1:
>  			## Given blade number does not exist
> -			fail(EC_STATUS)
> +			if options.has_key("-M"):
> +				return "off"
> +			else:
> +				fail(EC_STATUS)

I've never used bladecenter, so I don't know when a blade number doesn't
exist.  Does it reliably indicate that the blade is off?  If so, then
should we default to that without a new option?  If not, then this option
sounds bad, because it's effectively an automation of manual override, no?

The typical issue with nodes removed for maintenance is that startup
fencing tries to fence them and can't, for any agent.  The solution to
that has always been manual override or removing the node from
cluster.conf.

Dave