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Developers’ Weblog

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The MirOS Project News in the upcoming February issue of the BSD magazine contains a mention of mksh R37 with a new memory allocator. This will, however, be postponed, because I could not get it right in time (even though I learned from the first tries – and wish I could write it in i386 assembly) and lost interest for now, as the current one still does work. I may revisit that at a later date.

Fixing the PS1 bug, maybe changing the echo builtin to SUSv3 (and nothing more), maybe porting, are on the list, besides continuing the Coverity Scan fixes.

still recovering

16.02.2009 by tg@

I admit I hacked a little for leisure tonight, but I’m still recovering from a rather bad case of the “common cold” (grippaler Infekt) so I’ll yet have to do some catch-up on my duties, read and respond to mails and other communiques, etc. So don’t get your hopes up too soon. But I could go to my dayjob again today, which my doctor gave me a permit to not do for the end of last week. Paid about 50 € for remedies and the health insurance *grml…*

Not exactly sure where my priorities lie at the moment. The computer related things will come a little short in the next while; I’ll probably hack some more entropy and bootloader related stuff for fun, do another snapshot, while trying to get tear finally done, but that’s about it. The debs are postponed, no matter how much a decent lynx-secure package (linked against OpenSSL!) is needed; other MirOS work probably too. (Except little things here and there; helping the users which give actual feedback, especially for mksh; maybe, once we have enough Qs, put up a FAQ.)

I guess I have some catching up on sleep, life duties, and non-computer-related activities to do, considering how much the new job and the FOSDEM preparations strained.

FOSDEM is over

09.02.2009 by tg@
Tags: event

CDs and the “m” at FOSDEM 2009
(picture courtesy of Christian “taleon” Ruesch from #pcc)

FOSDEM 2009 is over, we are all sober again (I hope), any spotted bugs are getting fixed. I tended to the disklabel sector size issue, although that has yet to be tested, and we might want to see what upstream does about it. mksh changes will be coded when I get to it, and we’re looking forward towards the next event(s).

Is there anyone interested in making a Virtual Appliance (for qemu, VMware, Parallels, you name it) out of MirOS? I could, of course, do a standard install one, maybe add some packages, like with the live CDs, but I’m not good for desktop style ones. Maybe we want a server and a desktop appliance. Benny could bake a GNOME version, just to show off (note that I still quite dislike it… and expressed it with one of these yellow stickers at the “GNOME HATE” side at FOSDEM ☺).

MirOS/sparc users, show yourselves, if you want snapshots to be built and provided more often. Talk to us, so we see the effort to support a second platform is not in vain.


08.02.2009 by tg@
Tags: event

Alle englischen Flyer weg, alle CDs heute Vormittag weg. Die (alten) deutschen sowie die französischen Flyer gehen okay, aber die Mengen und Verhältnisse sind echt nicht planbar.

Die Vorträge sind okay, aber leider für mich nichts dabei zum rausziehen. Pläne schmieden geht aber.

mksh hingegen ist mehr als nur ein Erfolg, auch wenn mir gruselt, wenn Leute eine ohne den emacs-Modus haben wollen.

Hm, irgendwie läßt sich das Event nicht gut in Worte fassen. Es hat sich auf jeden Fall für uns alle gelohnt. Das Hotel war spaßig (insbesondere der Versuch, eine Rechnung zu erhalten); gestern Abend gabs Couscous Merguez + Lamm in einer verdammt kleinen aber gemütlichen Bude (mit Couch!), wo wir frischen Minztee getrunken haben (fünf Kannen; ich alleine zwei oder so).


07.02.2009 by tg@
Tags: event

Das Aufbauen verpaßt, aber wir haben ein „m“ (Bild wird später nachgereicht, sollte smultron freuen), viele Kontakte, und die englischen Flyer sind jetzt schon alle, die CDs runter auf ¼ oder so.

Der Unicode-syscons-Vortrag war für mich leider nicht so ertragreich; dadurch, daß wir vt100 wscons(4) haben, und durch meinen script(1) -lns Hack, haben wir schon mehr Probleme gelöst und Wissen angebaut als er. Ed Schouten ist aber anscheinend ein vielversprechender talentierter Jungentwickler.

Cool, ich habe ein bißchen WLAN! Mal schnell ein bißchen wlog Einträge verfassen, Benny und gecko2 wollen ja nicht.

Jetzt nur noch den NetBSD®-Kollegen neben uns zum Installieren des RANDEX-Plugins verlassen…

Wer setzt uns eigentlich direkt neben OpenBSD? Zum Glück gibts eine große Barriere, daher ist bislang, außer Laserpointerattacken (sogar direkt in Bennys Auge) noch nichts passiert…


07.02.2009 by tg@
Tags: event

Gestern, Freitag Abend, war der Tag 0 der FOSDEM. Natürlich waren wir – Fabian Köster und der Vortragende Robert Schuster, gecko2@ und ich – beim Beer Event, später auch mit bsiegert@. Das Bier war lecker, allerdings habe ich zwar nicht zu viel aber wohl zu varietätenreich getrunken, sodaß es mir in der Nacht nicht so wirklich gut ging und ich noch Bauchschmerzen habe. Also keinen mit dem Debian Projektleiter trinken.

Benny hat lustige Sympathiën von Leuten aus anderen Projekten bekommen, aber ich darf leider nicht drüber schreiben.

I’ve started trying to use the mircvs://contrib/code/heartbeat/ stuff to monitor NTP timedeltas between my boxen and a reference box (some random Stratum 2 pool server I do not use as server in any of the boxen, otherwise I might have used the PTB servers). Add rrdtool and rrdgraph output. Maybe mail when the boxen are down, until we have company monitoring set up?

I wonder if I should do it the “right” way instead of the “little effort” way, then commit it? Including cleaning up the age-old code. Is there any interest?

On a side note, we need a monitoring and management system, either one tool or integrating a few. It should have a command line interface and a WUI, different web pages for admins and (read-only) users who can look there for the general system state before complaining. Also, we need configuration management. A few keywords: nagios, cacti, puppet, cfengine. These were thrown into the room. Does anyone have a complete solution, possibly with VM management (how much does OpenCRM do?), for which we currently use a homegrown Jabber bot (don’t ask…) which does the template cloning (zfs, iSCSI) and other setup. Other suggestions, tools to avoid, success stories, links, documentation welcome.

Leute, kauft euer Nahverkehrsfahrkartenabonnement bei der Deutschen Bahn. Nicht nur nerven sie täglich weniger, sind ihre Züge in der Regel pünktlicher, sondern sie überfahren einen auch nicht fast… wie bei gewissen Stadtwerken vorkommt. Und in der Regel halten sie sogar da, wo sie sollen.

Auf jeden Fall habe ich meine innerstädtische Monatskarte bei der DB gekauft und hatte heute einen Gutschein für ein Jahr BahnCard 25 im Briefkasten. Nett…

kdm starts while (Ctrl-Alt-F8) the system is still booting. I only noticed it because we log in against LDAP (UCS), and since I have two NICs in there now (due to FreeWRT stuff), the Network Manager takes more time in bringing the network up. Gah. I do not even want to log in before /etc/rc.local has run, because it contains calls to rdate and starts an egd (entropy gathering dæmon), among other things… these cheaters are worse than Microsoft®!

Oh, and when I wanted to unlock it to write about it, it hung (as if it didn’t like me). Alt-SysRq to the rescue (we need it in MirBSD too). Crapware.

MirGRML and FOSDEM DuaLive™ Triforce™ CDs

03.02.2009 by tg@
Tags: bug event grml security snapshot

Uh-oh, 03.02. already. I think, after the switch to GRUB 2 and another couple of bootlooter fixes, that we’re there yet. Funnily I only noticed how BSD cannot access labelled disks when the device’s sector size mismatches the one in the label. There is also an embarassing (for upstream) local DoS exploit possibility, by setting a sector size of 0, the kernel traps division by zero. Thanks for all the blowfish, yeah.

The checksum file for MirGRML 2009.01 (experimental, but probably, by now, complete). You’ll probably figure out the ISO link.

The full MirOS CD should be done soonish as well. Just have to test it, then I can go to bed. Wish me luck.

GNU grub-legacy cannot access ISO 9660 on devices with sector sizes other than 2048 bytes… and, according to mika, has other quirks, with recent mke2fs’ inode defaults making it hiccup. Heh.

more bugs – bootloader and mksh

01.02.2009 by tg@
Tags: bug event grml mksh snapshot

Again. I almost have a MirGRML+bsd4grml ISO ready (exactly 72 MiB), just for the fun of it, and so that people can toy with it – and test the integration. But nooo, I even hacked a disklabel, yet it wouldn’t access the filesystem. The “machine label” command shows what’s wrong (and hints how to fix it), and I missed a corner case in disc I/O due to adding two not-so-independent-from-each-other scenarios during the El Torito merge.

mksh has funny behaviour with ${foo/@(%)/x} failing – only in Unicode mode though.

ext2fs damage

01.02.2009 by tg@
Tags: bug

Fun: MirBSD #8, #10 and #10-current can’t edit or create symlink(7)s on ext2fs, MirBSD #7quater could. They hang the filesystem, as well as the parent of the mount point, on access, and damage the filesystem. I have no idea… (msdos is damaging long filenames, btw.)

4.4OpenBSD can… oO

Benny has done more work on ext2fs, maybe he’ll fix it.

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