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Kernel-based checkpoint and restart

Kernel-based checkpoint and restart

Posted Aug 21, 2008 12:21 UTC (Thu) by stevelord (guest, #53493)
Parent article: Kernel-based checkpoint and restart

Bit late to the game here, but here is an early implementation I did back in 1993, the running
process was saved as a new executable which you could just fire up again. Yes, I had seen
inside the Cray implementation, and trust me, this bears no resemblance to it, and you would
run screaming for the hills if you saw it!

http://ftp.metalab.unc.edu/pub/historic-linux/ftp-archive...




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Kernel-based checkpoint and restart

Posted Aug 22, 2008 20:04 UTC (Fri) by nix (subscriber, #2304) [Link]

It's unexec()! Yay!

(You're an Emacs user, I trust. That or a Lisp hacker. Nobody else ever 
treats memory images as something *executable* :) )

Kernel-based checkpoint and restart

Posted Sep 17, 2008 2:08 UTC (Wed) by roelofs (guest, #2599) [Link]

Nobody else ever treats memory images as something *executable* :)

Wot's this, then? That's the very definition of a DOS .COM file! I wrote more than a couple of those m'self...

Greg

Kernel-based checkpoint and restart

Posted Sep 17, 2008 7:25 UTC (Wed) by nix (subscriber, #2304) [Link]

They're not generally produced by snapshotting a running process (the same
one that's doing the snapshotting) and dumping it out to disk. (Also,
unexec() can produce things like ELF files, and as far as I recall it does
it without using the OS's core-dumping mechanism.)


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