Re: [systemd-devel] kdbus, udev and systemd in the initramfs
On Wed, Jul 29, 2015 at 2:23 PM, Michael Biebl mbi...@gmail.com wrote: 2015-07-29 5:40 GMT+02:00 Tom Gundersen t...@jklm.no: On Wed, Jul 29, 2015 at 1:21 AM, Michael Biebl mbi...@gmail.com wrote: something I was wondering regarding kdbus and udev. If udev wants to drop the netlink transport and instead rely on kdbus, would this mean, systemd becomes mandatory in the initramfs to setup kdbus before udev is run? _If_ udev drops netlink entirely, then yes someone would need to set up kdbus. How this will all look has not been finally decided yet though. Is this documented somewhere, what kind of setup needs to be done for kdbus? Well, kdbus itself is extensively documented in the kernel man pages [0], but I'm not aware of any step-by-step documentation for how to make an alternative kdbus userspace implementation. Probably your best bet is to look at the systemd code. How complicated is it, to get kdbus up and running with a minimal environment like the initramfs? In principle, not hugely complicated. However, probably not worth the effort unless you have a good reason to. Wouldn't it be simpler to just use systemd (even if just as a wrapper around your current scripts)? Either way, I probably wouldn't put any serious amount of work into this just for the sake of udev quite yet. We still don't know precisely how it will shake out. In general though, I would expect that one day you'll want kdbus in the initramfs for one reason or another. Cheers, Tom [0]: http://www.freedesktop.org/software/systemd/kdbus/kdbus.html ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] kdbus, udev and systemd in the initramfs
2015-07-29 5:40 GMT+02:00 Tom Gundersen t...@jklm.no: On Wed, Jul 29, 2015 at 1:21 AM, Michael Biebl mbi...@gmail.com wrote: something I was wondering regarding kdbus and udev. If udev wants to drop the netlink transport and instead rely on kdbus, would this mean, systemd becomes mandatory in the initramfs to setup kdbus before udev is run? _If_ udev drops netlink entirely, then yes someone would need to set up kdbus. How this will all look has not been finally decided yet though. Is this documented somewhere, what kind of setup needs to be done for kdbus? How complicated is it, to get kdbus up and running with a minimal environment like the initramfs? -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth? ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
[systemd-devel] kdbus, udev and systemd in the initramfs
Hi, something I was wondering regarding kdbus and udev. If udev wants to drop the netlink transport and instead rely on kdbus, would this mean, systemd becomes mandatory in the initramfs to setup kdbus before udev is run? Will it still be possible in the future to run udev without systemd in the initramfs? Michael -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth? ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] kdbus, udev and systemd in the initramfs
On Wed, Jul 29, 2015 at 5:40 AM, Tom Gundersen t...@jklm.no wrote: On Wed, Jul 29, 2015 at 1:21 AM, Michael Biebl mbi...@gmail.com wrote: something I was wondering regarding kdbus and udev. If udev wants to drop the netlink transport and instead rely on kdbus, would this mean, systemd becomes mandatory in the initramfs to setup kdbus before udev is run? _If_ udev drops netlink entirely, then yes someone would need to set up kdbus. How this will all look has not been finally decided yet though. Actually, the problem might not even be netlink (as you may not have anything using libudev in your intrd), but then the problem will be the custom udev control protocol which would surely also be swapped out if netlink is. Will it still be possible in the future to run udev without systemd in the initramfs? Maybe, but I, for one, don't see this as a long-term goal. Having the same software in the initrd as on the real system seems much more reasonable to me. Cheers, Tom ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] kdbus, udev and systemd in the initramfs
On Wed, Jul 29, 2015 at 1:21 AM, Michael Biebl mbi...@gmail.com wrote: something I was wondering regarding kdbus and udev. If udev wants to drop the netlink transport and instead rely on kdbus, would this mean, systemd becomes mandatory in the initramfs to setup kdbus before udev is run? _If_ udev drops netlink entirely, then yes someone would need to set up kdbus. How this will all look has not been finally decided yet though. Will it still be possible in the future to run udev without systemd in the initramfs? Maybe, but I, for one, don't see this as a long-term goal. Having the same software in the initrd as on the real system seems much more reasonable to me. Cheers, Tom ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
