* Guido Trotter <[email protected]> [2013-11-15 14:13:01 +0100]:

> On Fri, Nov 1, 2013 at 4:11 PM, Dimitris Aragiorgis <[email protected]> wrote:
> > * Guido Trotter <[email protected]> [2013-11-01 15:57:07 +0100]:
> >
> >> Shouldn't they be actually reserved, but removed on node
> >> removal/modification or cluster modify?
> >>
> >
> > Makes sense but this is a rather big patch that should probably go to
> > master. I can give it a try for master, but I think we should merge this
> > patch to stable-2.10 to fix the aforeamentioned problem and make the
> > use case manageable.
> >
> 
> But then would this mean that in 2.10 the node ips are externally
> reserved "as long as you don't change them", but can become unreserved
> if you do? In that case I believe this to be a bug anyway.
> 

Well currently you get a kinda "inconsistent" network; you see X's that
don't respond neither to instances nor to external IPs. And the worst
is that once they get reserved are unmanageable. IMHO this small patch
makes the use case of cluster renumbering easier for the admin plus
it provides a more consistent overview of the IP pool. Either way
I don't think this patch is blocking the other one from merging, right?

Thanks,
dimara

> Thanks,
> 
> Guido
> 
> 
> 
> > Thanks,
> > dimara
> >
> >> Thanks,
> >>
> >> Guido
> >> On 1 Nov 2013 15:24, "Dimitris Aragiorgis" <[email protected]> wrote:
> >>
> >> > Currently, upon network creation, nodes' and master's IPs
> >> > are reserved in the pool.
> >> >
> >> > This leads to pool reservations ('X' in map) that cannot be changed
> >> > afterwards, although they may need to (e.g. in case of node
> >> > removal/modification). Also, these IPs are not actually handled by
> >> > Ganeti in the sense that they are not assigned to the cluster's VMs.
> >> >
> >> > Thus, we should mark the as externally reserved and not just reserved.
> >> >
> >> > Signed-off-by: Dimitris Aragiorgis <[email protected]>
> >> > ---
> >> >  lib/cmdlib/network.py |    4 ++--
> >> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >> >
> >> > diff --git a/lib/cmdlib/network.py b/lib/cmdlib/network.py
> >> > index 4f172a4..01bd948 100644
> >> > --- a/lib/cmdlib/network.py
> >> > +++ b/lib/cmdlib/network.py
> >> > @@ -169,7 +169,7 @@ class LUNetworkAdd(LogicalUnit):
> >> >          for ip in [node.primary_ip, node.secondary_ip]:
> >> >            try:
> >> >              if pool.Contains(ip):
> >> > -              pool.Reserve(ip)
> >> > +              pool.Reserve(ip, external=True)
> >> >                self.LogInfo("Reserved IP address of node '%s' (%s)",
> >> >                             node.name, ip)
> >> >            except errors.AddressPoolError, err:
> >> > @@ -179,7 +179,7 @@ class LUNetworkAdd(LogicalUnit):
> >> >        master_ip = self.cfg.GetClusterInfo().master_ip
> >> >        try:
> >> >          if pool.Contains(master_ip):
> >> > -          pool.Reserve(master_ip)
> >> > +          pool.Reserve(master_ip, external=True)
> >> >            self.LogInfo("Reserved cluster master IP address (%s)",
> >> > master_ip)
> >> >        except errors.AddressPoolError, err:
> >> >          self.LogWarning("Cannot reserve cluster master IP address (%s):
> >> > %s",
> >> > --
> >> > 1.7.10.4
> >> >
> >> >
> >
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> 
> 
> 
> -- 
> Guido Trotter
> Ganeti Engineering
> Google Germany GmbH
> Dienerstr. 12, 80331, München
> 
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