Re: A possible idea for Linux: Save running programs to disk

[Michael Concannon <mike@concannon.net>]

Arjan van de Ven wrote:

> On Sat, 2005-10-01 at 13:30 -0800, lokum spand wrote:
>  
>
> > I allow myself to suggest the following, although not sure if I post in
> > the right group:
> >
> > Suppose Linux could save the total state of a program to disk, for
> > instance, imagine a program like mozilla with many open windows. I give
> > it a SIGNAL-SAVETODISK and the process memory image is dropped to a
> > file. I can then turn off the computer and later continue using the
> > program where I left it, by loading it back into memory.
> >
> > Would that be possible? At least a program can be given a ctrl-z and is
> >    
>
> there is a LOT of state though.. the moment you add networking in the
> picture the amount of state just isn't funny anymore. Your X example is
> a good one as well...
>  
There are a few cluster/parallel computing libraries out there that are 
starting to allow "process migration"...

One would assume that "saving it to a disk" is simply a degenerate case 
of migrating the process...

Presuming they have process migration working (and it seemed close a 
while ago when I last looked), saving to a file might already be 
supported...  I'd google "process migration" and you are likely to find 
a lot of discussion on this topic...

/mike

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