[Linux-cluster] Child vs Resource

[Lon Hohberger]

On Mon, 2007-11-19 at 14:38 -0800, Scott Becker wrote:
> In operation, do the children get started successfully before the
> parent is started? As opposed to them being started independently?

Other way around.  Children are dependent on the parent container, and
can inherit attributes.  Assuming untyped resources, generally:

<a>
  <b>
    <c/>
  </b>
  <d/>
</a>

start = a b c d
stop = d c b a

> Is the failures (after everything has been running) handled the same?

Yes, unless you specify __independent_subtree for a resource, then it
and its children are independent and attempted to be restarted as a
separate operation from a full service restart.  Only if that partial
restart fails in this case does a full service restart occur.

-- Lon

> 
>     scottb
> 
> 
> Ryan McCabe wrote: 
> > On Mon, Nov 19, 2007 at 10:15:22AM -0800, Scott Becker wrote:
> >   
> > > On luci's configure a service screen, there's a button to 'add a child' 
> > > and another button to 'add a resource to this service'.
> > > 
> > > I haven't found anything which explains the difference.
> > >     
> > 
> > Adding a child to an existing resource causes the resultant resource to
> > be nested under the one to which you're adding a child. For example, if
> > the resource you're adding a child to is named R, then, it will produce
> > something like:
> > 
> > <service ...>
> >  <restype name="R">
> >    <new_resource_here />
> >  </restype>
> > </service>
> > 
> > Clicking the 'add a resource to this service' button causes a new
> > resource to be added to the end of the service block. For example:
> > 
> > <service ...>
> >  <restype name="resource0">
> >    <optional_nested_resources />
> >  </restype>
> >  ...
> >  <restype name="resourceN" />
> > 
> >  <new_resource_here />
> > </service>
> > 
> > 
> > Ryan
> > 
> > --
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> >   
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