Wunschkonzert, Ponyhof und Abenteuerspielplatz

Later this week the Linux Plumbers Conference 2010 will take place at the Hyatt Regency in Cambridge.

Together with Mark Brown I'll be running the conference track about Audio, and I believe we managed to put together quite a nice schedule with various interesting talks covering many areas of what Audio on Linux is about.

I'll also be around at the Boot and Init Systems track which Kay Sievers is running. Together with Kay I'll do a session about systemd, everybody's favourite system and session manager. We also managed to convince a number of distribution maintainers of systemd to do short presentations about the state of systemd adoption in their respective distributions: Michael Biebl from Debian, Gustavo Barbieri from Gentoo, Kay for openSUSE and yours truly for Fedora.

Because there never can be enough systemd coverage at a conference I'll do another talk about systemd, in Vincent Untz' Desktop track, this time focussing less on how to boot and maintain a system, but more on doing the same for desktop sessions, in particular GNOME.

I'll also stick around for the the first two days of the GNOME Boston Summit.

See you in Cambridge!

posted at: 02:18 | path: /projects | permanent link to this entry | 11 comments

Posted by Sri Ramkrishna at Tue Nov 2 07:07:58 2010
waaah, i won't be there. Who will tease you in my absence?

sri

Posted by Albert Strasheim at Wed Nov 3 08:27:38 2010
Since F14 has shipped with Upstart, it would be really useful if you could post a guide for people who want to switch over to systemd in F14.

yum install systemd doesn't seem to do the trick.

Maybe the alternatives system could be used to switch between the two?

Posted by Jeff Sandys at Wed Nov 3 16:54:33 2010
Lennart,
One thing I would like the Audio Linux Plumbers to work on is "RT kernel, JACK, Root user, and Security".
This article:
http://docs.fedoraproject.org/en-US/Fedora/14/html/Musicians_Guide/sect-Musicians_Guide-CCRMA_Security_and_Stability.html
implies that a computer setup for real time music production is a security risk. Is that true? Is there a real exploit of PlanetCCRMA? What about UbuntuStudio with JACK and RT kernel? If so what can be done to the RT kernel and/or JACK to close this security hole?
Thanks,
Jeff Sandys

Posted by Lennart at Tue Nov 9 20:49:13 2010
Albert: Sorry, but we only work on systemd in F15. It's too much work keeping both systems up to date. Sorry.

Jeff: Most distributions ship rtkit these days, which hands supervised RT privs out to programs. This is how PA gets the necessary scheduling priority without being a huge security problem. Other apps are welcome and encouraged to use this too. I know that WINE and fluidsynth are able to use rtkit. However, JACK doesn't since the devs apparently think D-Bus is an abomination and believe that RLIMIT_RTPRIO is all they need and don't really care much about user firendliness and security beyond that. Can't say I care much about that.

Posted by dhaval at Wed Nov 10 00:17:12 2010
just the colleagues from red hat?! sad :(

anyhow, i think i have a cgroups xattrs patch lying somewhere. one of these days i shld dust it up and actually test it and post it.

oh, btw, i fixed my audio issues. no thanks to you.

Posted by Charles at Wed Nov 10 00:42:51 2010
Sounds really promising! Looking forward to systemd being part of the default fedora install for 15. Hopefully Ubuntu'll pick it up before long...

Posted by someone at Wed Nov 10 09:21:48 2010
Can systemd support apps that dynamically bind to a random port, ask systemd to start them again under certain conditions and then close? This would be useful to implement Android/iOS style backgrounding. systemd could also push those wakeups into the Ethernet/WiFi device so the system can go into suspend mode.

Posted by Tobu at Fri Nov 12 16:45:44 2010
So far /proc has been a kernel-userland communication area. Adding xattrs would make it a storage area as well.

I don't think this is really needed; a proposal to add a UUID in /proc/<id>/uuid would let you store the metadata externally with no ambiguity about the process it refers to.

Posted by Lennart at Sat Nov 13 02:53:36 2010
Tobu, well, what's kinda nice with the xattrs is that they have the same lifecycle as the objects they are attached to. If you had uuids, then you'd still have to clean up the additional metadata some way, which is kinda hard, since you cannot really watch processes going away in a nice way, unless you are the parent process. (and yes, cn_proc is awful)

Posted by Ben at Sun Nov 14 04:50:29 2010
I think it's cool that you'll be able to start TTYs on-demand, but it might be nice to have (at least) one started regardless, for the (not too likely?) possible event of systemd crashing (or other similar cataclisms, for lack of a better term ;-); can it be done?

Posted by maks at Sun Nov 14 18:18:23 2010
"A longer discussion about the future of initrds and the logic necessary to find the root file system on boot was quite enlightening."

I'd be interested on more info on the initramfs topic. I was at plumbers last year and am working on initramfs-tools in Debian.

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レナート Wunschkonzert, Ponyhof und Abenteuerspielplatz ﻟﻴﻨﺎﺭﺕ

Mon, 01 Nov 2010

Off to LPC 2010, Boston