Re: another laundry or shopping list

[Jordi Polo <mumismo@wanadoo.es>]

> carlos wrote:
> > Alan Robertson wrote:
> > > A process has state internally, and migrating it is very different from
> > > restarting it.  You can't migrate a process when a node dies - you can
> > > only restart it.  Automatic restart of a process by the OS is probably
> > > not a good idea.
> >
> > ok, may be some process are not susceptible to restart,but how about
> > sending the state in the heartbeats and all the things the process
> > need  to start in the last point it left it`s work.
>
> And if it is a process with a 10 megabyte address space, (in general) it's
> state is the contents of that 10 megabyte address space plus kernel stack,
> etc. ;-)
>
First , keyword here is : optional 
and high level i'd say.
There are expensive machines with 2 motherboards doing the same work in order 
to avoid fails when one board fails , this is something similar but between 
nodes . 

Anyway if you don't like that just restarting it is not a good idea.
If you can run a process and say "this process will be restarted till the 
work is done" it will be good . Of course you won't always said that , in 
fact is a quite rare case 

--
Jordi 
Other Student of Spain  

Linux-cluster: generic cluster infrastructure for Linux
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