Messages in this thread | | | Date | Thu, 10 Apr 2008 17:49:47 -0500 | From | "Serge E. Hallyn" <> | Subject | Re: [PATCH 1/3] change clone_flags type to u64 |
| |
Quoting Daniel Hokka Zakrisson (daniel@hozac.com): > Serge E. Hallyn wrote: > > Quoting Andi Kleen (andi@firstfloor.org): > >> > I guess that was a development rationale. > >> > >> But what rationale? It just doesn't make much sense to me. > >> > >> > Most of the namespaces are in > >> > use in the container projects like openvz, vserver and probably others > >> > and we needed a way to activate the code. > >> > >> You could just have added it to feature groups over time. > >> > >> > > >> > Not perfect I agree. > >> > > >> > > With your current strategy are you sure that even 64bit will > >> > > be enough in the end? For me it rather looks like you'll > >> > > go through those quickly too as more and more of the kernel > >> > > is namespaced. > >> > > >> > well, we're reaching the end. I hope ! devpts is in progress and > >> > mq is just waiting for a clone flag. > >> > >> Are you sure? > > > > Well for one thing we can take a somewhat different approach to new > > clone flags. I.e. we could extend CLONE_NEWIPC to do mq instead of > > introducing a new clone flag. The name doesn't have 'sysv' in it, > > and globbing all ipc resources together makes some amount of sense. > > Similarly has hpa+eric pointed out earlier, suka could use > > CLONE_NEWDEV for ptys. If we have net, pid, ipc, devices, that's a > > pretty reasonable split imo. Perhaps we tie user to devices and get > > rid of CLONE_NEWUSER which I suspect noone is using atm (since only > > Dave has run into the CONFIG_USER_SCHED problem). Or not. We could > > roll uts into net, and give CLONE_NEWUTS a deprecation period. > > Please don't. Then we'd need to re-add it in Linux-VServer to support > guests where network namespaces aren't used...
So these are networked vservers with a different hostname? Just curious, what would be a typical use for these?
Anyway then I guess we won't :) Do you have other suggestions for ns clone flags which ought to be combined? Do the rest of what I listed make sense to you? (If not, then I guess I'll step out of the way and let you and Andi fight it out :)
thanks, -serge
| |