Re: [PATCH 00/80] Kernel based checkpoint/restart [v18]

Ingo Molnar
2009-09-26T14:56:50Z

* Dan Smith <danms@us.ibm.com> wrote:

> >> Q: What additional work needs to be done to it? A: Fill in the
> >> gory details following the examples so far. Current WIP includes
> >> inet sockets, event-poll, and early work on inotify, mount
> >> namespace and mount-points, pseudo file systems
>
> AM> Will this new code muck up the kernel, or will it be clean?
>
> I have (and have previously posted) prototype code to do c/r of open
> sockets, ignoring some things like updating timers and such. It looks
> rather similar to the existing UNIX bits, and is even easier in some
> ways.
>
> One particular use case is only migrating listening sockets and
> allowing the connected ones to be reset upon restart. That enables a
> bunch of things like apache, postfix, vncserver, and even sshd. I
> will pull the listen-only bits out of my current patch, scrape off a
> little bitrot, and post them in a few days.

That looks useful. (Btw., the other four questions Andrew asked look
relevant too.)

Ingo