Thx for the tips :) 5 lut 2013 18:12, <[email protected]> napisał(a):
> On Tue, 05 Feb 2013 14:07:37 +0100, Grzegorz Dwornicki said: > > > I guess that there may be a better API that why this thread was created > in > > first place. My project goal is to make process checkpoints like cryopid > > had. This is for my thesis and will be GPL for everyone after my > > graduaction. I am researching this subject at this point. > > In that case, you want to go look at the checkpoint/restart patches that > are > already in the kernel, and in process. Hint - it's a *lot* harder to do > this > right than a thesis project (unless you want to only do a very restricted > subset, like "no open files", "no TCP connections", etc). In fact, a lot > of > the 'namespace' stuff was added to help support C/R. For instance, the PID > namespace is there to deal with the fact that if you checkpoint a process > with > PID 23974, you need to be able to guarantee that it gets 23974 on restart > (as > otherwise you hit problems with getpid() and kill() not referring to the > process you though it did). Of course, this majorly sucks if that PID is > already in use. The solution there is to spawn a new, empty PID namespace > to > guarantee that number is available... > > https://ckpt.wiki.kernel.org/index.php/Main_Page is a good place to > start. > >
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