----- Original Message ----- > From: "Josh Boyer" <jwboyer@xxxxxxxxxxxxxxxxx> > To: "Fedora Cloud SIG" <cloud@xxxxxxxxxxxxxxxxxxxxxxx> > Cc: "Kernel Fedora" <kernel@xxxxxxxxxxxxxxxxxxxxxxx> > Sent: Wednesday, October 30, 2013 7:07:46 AM > Subject: Cloud product kernel requirements > > Hi All, > > I realize the WG is just forming up and you have a lot of other items > to cover for now, but I wanted to get this sent out and have people > start thinking about it sooner rather than later. > > The kernel team has heard in the past that the Cloud group would like > to see something of a more minimal kernel for usage in cloud images. > We'd like to hear the requirements for what this smaller image would > need to cover. > > Right now, a default x86_64 kernel package on f20 is ~134MB installed. > Most of that is device drivers installed in /lib/modules/`uname -r`/. > The vmlinux binary is about 5MB and the initramfs (which is created > at install time and can actually vary quite widely depending on > various things) is about 11MB. Drivers can be trimmed to a degree, > but please keep in mind that the kernel is already relatively small > for the functionality it provides. For example, it is not much bigger > than glibc-common (119MB). > > So, some caveats to keep in mind while you're thinking about this: > > 1) We're mostly talking about packaging here, not building a separate > cloud kernel package or vmlinux. The kernel team really wants to have > a single vmlinux across the 3 products if at all possible. We can't > scale to much else. > > 2) What usecases is the cloud image going to cover? E.g. is it just > virtio stuff, or will it also fit PCI passthru (which then requires > drivers for those PCI devices)? I may be totally ... well.. uneducated here, but this sort of sounds a bit like it may be related to spice (someone, by all means, tell me if i'm just grasping at thin air on this one....) Anyway - in my googling I saw this mail - http://lists.freedesktop.org/archives/spice-devel/2012-November/011353.html - i don't know if that is going to help anyone, or not. It's almost making me wonder if that's an interesting overlap with the desktop team? > > 3) What are the common provisioning requirements that are driving the > size reduction? (See comment about glibc-common. I would think > change is needed in multiple packages, not just the kernel.) > > 4) Other "cloudy" stuff that I'm entirely unaware of that might be > relevant. Explain it to me like I'm a child. I have nothing else useful here coming to mind, but I did note this on the PRD just so it's something for us to kep track of - i made a "bucket list" in the detailed requirements section with a link to this mail. > > Thanks! > > josh > _______________________________________________ > cloud mailing list > cloud@xxxxxxxxxxxxxxxxxxxxxxx > https://admin.fedoraproject.org/mailman/listinfo/cloud > Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct > _______________________________________________ cloud mailing list cloud@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/cloud Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
