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| === Starting logfile irclogs/upstart.log | ||
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| === Topic for #upstart: Upstart 0.3.5 | http://upstart.ubuntu.com/ | http://upstart.ubuntu.com/wiki/ | http://upstart.ubuntu.com/doc/getting-started.html | http://codebrowse.launchpad.net/~keybuk/upstart/main/changes | irc logs: http://people.ubuntu.com/~fabbione/irclogs | http://upstart.ubuntu.com/wiki/UpstartOnGentoo | ||
| === Topic (#upstart): set by Keybuk at Tue Feb 13 18:08:07 2007 | ||
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| Keybuk | hmm | 12:49 |
|---|---|---|
| Keybuk | so "status foo", pretty obvious that should return one entry for a normal job | 12:49 |
| Keybuk | and I think it's correct to return a list of jobs for an instance job | 12:50 |
| Keybuk | but should it also return the "master" job, which would always be stop/waiting | 12:54 |
| Keybuk | or should I have a special message for an instance job list | 12:54 |
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| === Keybuk starts tackling initctl | ||
| AlexExtreme | heh | 05:38 |
| AlexExtreme | "Do not stand directly in front of this door." | 05:38 |
| AlexExtreme | well do you expect blind people to read it without going up to it? :p | 05:38 |
| Keybuk | that was my point :p | 05:39 |
| AlexExtreme | yeah i know ;) | 05:39 |
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| Mithodin | Hello | 06:12 |
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| === Topic for #upstart: Upstart 0.3.5 | http://upstart.ubuntu.com/ | http://upstart.ubuntu.com/wiki/ | http://upstart.ubuntu.com/doc/getting-started.html | http://codebrowse.launchpad.net/~keybuk/upstart/main/changes | irc logs: http://people.ubuntu.com/~fabbione/irclogs | http://upstart.ubuntu.com/wiki/UpstartOnGentoo | ||
| === Topic (#upstart): set by Keybuk at Tue Feb 13 18:08:07 2007 | ||
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| === Keybuk is much happier | ||
| AlexExtreme | why's that? | 08:13 |
| Keybuk | initctl is turning out to be rather simpler with the new IPC messages | 08:14 |
| AlexExtreme | cool | 08:14 |
| mbiebl | Keybuk: I wanted to prepare a 0.3.5 release for experimental today. | 08:33 |
| mbiebl | Got a couple of questions | 08:34 |
| Keybuk | sure | 08:34 |
| mbiebl | Is console logged still unsafe? | 08:34 |
| Keybuk | it's still disabled yeah, I haven't touched logd any further yet | 08:35 |
| Keybuk | the problem is the bad behaviour of just about every app when they can't write to stdout | 08:35 |
| mbiebl | ok, then I'll better also use console output then. | 08:35 |
| mbiebl | The next issue is rc0-poweroff/rc0-halt, which were obsoleted. | 08:36 |
| Keybuk | haven't traced it further; can't see why they terminate, rather than just ignore it | 08:36 |
| Keybuk | yes | 08:36 |
| Keybuk | since we can transfer environment variables in an event, it made more sense for shutdown itself to set INIT_HALT, just as it did with sysvinit | 08:36 |
| mbiebl | You seem to backup them to dpkg-bak if they were modified in preinst. Why not just remove it? | 08:37 |
| Keybuk | general "don't remove other people's modified conffiles" behaviour | 08:38 |
| mbiebl | You also delete the unmodified ones in preinst, so they are still recorded as installed by dpkg | 08:38 |
| Keybuk | that's a dpkg bug | 08:38 |
| Keybuk | older dpkg behaves correctly | 08:38 |
| Keybuk | there's currently no way to remove a conffile without it still showing up in dpkg -L | 08:38 |
| Keybuk | even if it's not shipped in the current version of a package | 08:39 |
| mbiebl | I tried it that way: | 08:39 |
| mbiebl | mv the modified ones in preinst to .dpkg-bak, the unmodified ones to .dpkg-remove | 08:39 |
| mbiebl | Remove .dpkg-remove files in postinst. | 08:39 |
| mbiebl | If upgrade fails, restore .dpkg-bak and .dpkg-remove files back. | 08:40 |
| mbiebl | (abort-upgrade in postinst) | 08:40 |
| Keybuk | how does that change it? | 08:42 |
| Keybuk | dpkg still records the conffile, no? | 08:42 |
| mbiebl | no, it doesn't | 08:42 |
| Keybuk | ahh | 08:42 |
| Keybuk | interesting | 08:42 |
| Keybuk | that's changed recently then | 08:43 |
| Keybuk | shiny | 08:43 |
| Keybuk | I'll update my functions accordingly | 08:43 |
| mbiebl | It also restores the state completely on an aborted upgrade. | 08:43 |
| mbiebl | If I rmmed the unmodified ones in preinst that wouldn't be possible. | 08:44 |
| Keybuk | I rm them in postinst, no? | 08:44 |
| mbiebl | Yes. | 08:45 |
| Keybuk | the recipe always used to be: | 08:45 |
| Keybuk | in preinst, move to dpkg.bak if modified, leave alone if not | 08:46 |
| Keybuk | in postinst, remove if still exists | 08:46 |
| Keybuk | in postrm abort-upgrade, rename .dpkg-bak back to the conffile | 08:46 |
| Keybuk | -- | 08:46 |
| Keybuk | so what happens there is the conffile is in place when the package is upgraded, so dpkg notes it in status as an obsolete | 08:46 |
| Keybuk | looks like dpkg has been fixed so dpkg actually stats the file, and doesn't note a missing file as obsolete now | 08:47 |
| Keybuk | so the recipe should be: | 08:47 |
| Keybuk | in preinst, move to .dpkg-bak if modified, .dpkg-remove if not | 08:47 |
| Keybuk | in postinst, remove .dpkg-remove if it exists | 08:47 |
| Keybuk | in postrm abort-upgrade, rename .dpkg-bak or .dpkg-remove back to the conffile | 08:47 |
| Keybuk | yes? | 08:47 |
| mbiebl | yeah, that's what I do currently. | 08:48 |
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| mbiebl | I just wanted to hear your thoughts on this, if you think this is the correct way (tm) to do it. | 08:48 |
| Keybuk | that makes perfect sense | 08:48 |
| mbiebl | I really hoped dpkg would be a bit more clever in that regard. | 08:49 |
| mbiebl | And did that automatically. | 08:49 |
| Keybuk | :D | 08:50 |
| Keybuk | note a bug in the Ubuntu upstart package | 08:50 |
| Keybuk | migrate-inittab generates the wrong runlevel event names | 08:50 |
| mbiebl | I haven't synced this feature into the Debian postinst (yet) | 08:52 |
| Keybuk | *nods* | 08:53 |
| Keybuk | btw, woooooo shiny: | 08:53 |
| Keybuk | wing-commander util% sudo ./initctl start tests/foo | 08:53 |
| Keybuk | tests/foo (start) waiting | 08:53 |
| Keybuk | tests/foo (start) starting | 08:53 |
| Keybuk | tests/foo (start) pre-start | 08:53 |
| Keybuk | pre-start process 2533 | 08:53 |
| Keybuk | tests/foo (stop) pre-start | 08:53 |
| Keybuk | tests/foo (stop) stopping | 08:53 |
| Keybuk | tests/foo (stop) killed | 08:53 |
| Keybuk | tests/foo (stop) post-stop | 08:53 |
| Keybuk | tests/foo (stop) waiting | 08:53 |
| Keybuk | initctl: tests/foo pre-start process killed by SEGV signal | 08:54 |
| Keybuk | -- | 08:54 |
| Keybuk | start blocks until the job is running/finished, and returns an error if the job failed, and outputs all the interim process states | 08:54 |
| mbiebl | oh, I remember another issue: postinst/purge | 08:55 |
| mbiebl | I added a call to remove .dpkg-bak there. | 08:55 |
| Keybuk | hmm, interesting | 08:55 |
| Keybuk | hadn't previously considered that | 08:55 |
| Keybuk | does dpkg remove modified configuration files on purge? | 08:55 |
| mbiebl | yes, that's why I added it | 08:56 |
| mbiebl | To be compliant with dpkg's behaviour | 08:56 |
| Keybuk | *nods* | 08:58 |
| Keybuk | tests/foo (start) post-start | 08:58 |
| Keybuk | main process 2865 | 08:58 |
| Keybuk | post-start process 2866 | 08:58 |
| Keybuk | \o/ | 08:58 |
| mbiebl | Does that mean, I could start a daemon in (pre|post)-(start|stop) (and have it monitored/respawned)? | 09:00 |
| Keybuk | no, upstart wouldn't know the process id | 09:00 |
| Keybuk | Mar 5 19:59:52 wing-commander init: Caught segmentation fault, core dumped | 09:01 |
| Keybuk | Mar 5 20:00:23 wing-commander last message repeated 19073 times | 09:01 |
| Keybuk | Mar 5 20:01:24 wing-commander last message repeated 33310 times | 09:01 |
| Keybuk | oops | 09:01 |
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| AlexExtreme | Keybuk, that looks bad ;) | 09:06 |
| Keybuk | AlexExtreme: yeah, haven't figured out a way to dump core *and* get over the problem instruction yet | 09:13 |
| Keybuk | so when it SEGVs, it basically ends up in an infinite loop writing core to the disk | 09:13 |
| AlexExtreme | yes | 09:13 |
| AlexExtreme | so basically it needs to stop calling the function that's causing the SEGV if possible? | 09:14 |
| Keybuk | right, but how do you do that? | 09:14 |
| Keybuk | the function has probably altered state | 09:14 |
| Keybuk | so you have no idea whether the global state is consistent | 09:15 |
| Keybuk | you may have a job that has dangling pointers into the nether | 09:15 |
| Keybuk | so you can't carry on, because you'll just dump core again | 09:15 |
| AlexExtreme | yep :/ | 09:15 |
| Keybuk | and you can't even reexec and transfer your state, because you could dump core while reexecing | 09:15 |
| Keybuk | the best solution so far is to reexec without transfering state | 09:15 |
| Keybuk | which will cause X to crash :p | 09:15 |
| AlexExtreme | :) | 09:15 |
| Keybuk | but I figure X crashing is better than nothing | 09:15 |
| AlexExtreme | yes | 09:16 |
| Keybuk | brb, need to SUB | 09:25 |
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| Keybuk | right | 09:30 |
| Keybuk | better | 09:30 |
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| Keybuk | that works actually | 09:31 |
| Keybuk | SEGV'ing init might crash X | 09:31 |
| Keybuk | but apport catches it | 09:31 |
| Keybuk | so you get a friendly explanation *why* and can click to file a bug | 09:31 |
| Keybuk | which is nice | 09:32 |
| Keybuk | wing-commander util# ./initctl status tests/inst | 09:34 |
| Keybuk | tests/inst (instance) | 09:34 |
| Keybuk | wing-commander util# ./initctl start -n tests/inst | 09:34 |
| Keybuk | wing-commander util# ./initctl start -n tests/inst | 09:34 |
| Keybuk | wing-commander util# ./initctl start -n tests/inst | 09:34 |
| Keybuk | wing-commander util# ./initctl status tests/inst | 09:34 |
| Keybuk | tests/inst (instance) | 09:34 |
| Keybuk | (start) running | 09:34 |
| Keybuk | (start) running | 09:34 |
| Keybuk | (start) running | 09:34 |
| Keybuk | ^ do we like that as a method for reporting instance jobs? | 09:34 |
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| Keybuk | (and stop tests/inst stops every single instance) | 09:40 |
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| AlexExtreme | Keybuk, looks good | 10:03 |
| Keybuk | needs some cleaning up, and testing but I'm pretty happy with it | 10:04 |
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