[Linux-HA] change a nvpair's value without restarting of aresource

[Andrew Beekhof]

On 9/20/07, Junko IKEDA <ikedaj at intellilink.co.jp> wrote:
> > > > the code is still there and looks to be enabled
> > > >
> > > > it works by checking the RA's metadata^...
> > > >
> > > > * your RA must advertise the reload action
> > > > * the attribute you want to be able to change must specify:
> unique="false"
> > >
> > > I'm sorry to ask you right off.
> > > Where should I specify unique="false" in cib.xml?
> >
> > no in the CIB.
> > it goes in the RA metadata.  eg.
> >                                            vvvvvvvvv
> > <parameter name="dampen" unique="0">
> > <longdesc lang="en">
> > The time to wait (dampening) further changes occur
> > </longdesc>
> > <shortdesc lang="en">Dampening interval</shortdesc>
> > <content type="integer" default="1s"/>
> > </parameter>
>
> I see...
> This way is a bit difficult, I might not be able to ask user lightly to do
> that.

users shouldn't be doing this... its the job of the people writing the RA

>
> > > It seems more likely that the value can be changed several times.
> > > I'd appreciate it if this function is improved.
> >
> > the metadata is cached, not the value.  the metadata should only
> > rarely need to change
>
> ok, it seems like our request is against the concept of metadata.

you've lost me.

you want changes to a resource's attribute to be sent to the resource
but not cause a restart.... thats exactly what this does.

what you can't do is have the attribute behave one way and then the
other later on.

either an attribute needs a restart to take effect or not - and the
person writing the RA should decide that, not the user