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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