Messages in this thread | | | Date | Mon, 4 Apr 2011 10:10:18 -0500 | From | "Serge E. Hallyn" <> | Subject | Re: [PATCH 05/10] Core checkpoint/restart support code |
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Quoting Nathan Lynch (ntl@pobox.com): > On Sun, 2011-04-03 at 14:03 -0500, Serge E. Hallyn wrote: > > Quoting ntl@pobox.com (ntl@pobox.com): > > > Only a pid namespace init task - the child process produced by a call > > > to clone(2) with CLONE_NEWPID - is allowed to call these. The state > > > > So you make this useful for your cases by only using this with > > application containers - created using lxc-execute, or, more precisely, > > using lxc-init as the container's init. So a container running a stock > > distro can't be checkpointed. > > Correct, a conventional distro init won't work, and application > containers are my focus for now, at least. > > > > Is this just to keep the patch simple for now, or is there some reason > > to keep this limitation in place? > > I guess you're asking whether non-pid-init processes could be allowed to > use the syscalls?
No. I'm asking whether you are intending to later on change the checkpoint API to allow an external task to checkpoint a pid-init process, rather than the pid-init process having to initiate it itself.
-serge
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