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| dspstv | hi all | 02:42 |
|---|---|---|
| dspstv | im on this machine that has ubuntu | 02:42 |
| dspstv | so no inittab is present | 02:43 |
| dspstv | and i just need to add one line to put a program to respawn if it crahses | 02:43 |
| dspstv | i've read and google has mislead me since yesterday | 02:43 |
| dspstv | now, someone from the ubuntu channel told me to ask in here | 02:43 |
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| dspstv | in inittab it will be just adding one line... | 02:44 |
| dspstv | im lost | 02:44 |
| Keybuk | inittab isn't used in Ubuntu | 02:48 |
| Keybuk | what would you like to do? | 02:48 |
| dspstv | Keybuk, yes that i figured | 02:52 |
| dspstv | i just need to add a line | 02:53 |
| dspstv | for a program | 02:53 |
| dspstv | i need to keep alive | 02:53 |
| dspstv | so, respawn was my friend | 02:53 |
| Keybuk | what line would you have added? | 02:54 |
| dspstv | let me see.. | 03:01 |
| dspstv | i have to copy any and just change the service for the program i want | 03:01 |
| dspstv | need to just know where one does that in upstart | 03:06 |
| dspstv | please | 03:06 |
| dspstv | i have a software for music called pd | 03:06 |
| dspstv | i need to treat it as a deamon | 03:06 |
| dspstv | i have done that in other distros | 03:06 |
| Keybuk | you're not helping yourself here | 03:06 |
| dspstv | sure | 03:06 |
| dspstv | i can agree | 03:06 |
| dspstv | im not a pro on this | 03:07 |
| Keybuk | if you give me the details you enter into inittab, I can tell you what you need to do for upstart | 03:07 |
| dspstv | ok | 03:07 |
| Keybuk | e.g. what command is it that you need to run, etc.? | 03:07 |
| Keybuk | does that command go into the background when you run it? | 03:07 |
| dspstv | this is what i had used | 03:24 |
| dspstv | null:12345:respawn:/bin/pd -nogui -verbose -nomidi | 03:24 |
| dspstv | null:12345:respawn:/bin/pd | 03:24 |
| Keybuk | ok | 03:25 |
| Keybuk | so in Upstart parlance, you'd need a file in /etc/event.d containing | 03:25 |
| Keybuk | respawn | 03:25 |
| Keybuk | exec /bin/pd -nogui -verbose -nomidi | 03:25 |
| Keybuk | -- | 03:26 |
| Keybuk | that requires manual starting, see the tty1 file for how to make it start and stop in certain runlevels | 03:26 |
| dspstv | Keybuk, the name of that file requieres a special naming structure? | 03:29 |
| dspstv | Keybuk, tx! | 03:29 |
| Keybuk | dspstv: no, name can be whatever you like | 03:29 |
| dspstv | man tx again | 03:36 |
| dspstv | i take note now | 03:36 |
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| j_ | hi | 06:15 |
| Jc2k | hi | 06:16 |
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| j_ | hi | 09:45 |
| Jc2k | hi | 09:45 |
| j_ | I'm looking for an upstart maintainer | 09:45 |
| Jc2k | if you ask a q and idle someone will get back to u | 09:46 |
| j_ | I'd like to known when it's schedule to add the "and" condition in upstart | 09:47 |
| Keybuk | j_: it's already added on bzr trunk, but has interestingly unexpected issue | 10:23 |
| j_ | could you be more specific? | 10:26 |
| Keybuk | well, take a simple example | 10:27 |
| Keybuk | start on foo and bar | 10:27 |
| Keybuk | stop on frodo or bilbo | 10:27 |
| Keybuk | -- | 10:27 |
| Keybuk | foo happens, job remains stopped | 10:27 |
| Keybuk | bar happens, job starts | 10:27 |
| Keybuk | frodo happens, job sttops | 10:27 |
| Keybuk | -- | 10:27 |
| Keybuk | now, do foo *and* bar both need to happen again? | 10:27 |
| Keybuk | or is it enough that either happens? | 10:27 |
| === ..[topic/#upstart:Keybuk] : Upstart 0.3.8 | http://upstart.ubuntu.com/ | http://people.ubuntu.com/~fabbione/irclogs/ | https://lists.ubuntu.com/archives/upstart-devel/2007-October/000468.html | ||
| Jc2k | Keybuk: eh, in my scheduler i was lucky in that i could say *both* always needed to happen again :D | 10:36 |
| Jc2k | re the two seperate upstart services idea, i think you would have a chance at doing it by exposing an interface from the manager back the job handler (pid 1) | 10:37 |
| j_ | I think that it will stop | 10:37 |
| Jc2k | but it would get messy | 10:37 |
| Keybuk | j_: remain stopped? | 10:37 |
| Keybuk | so if frodo or bilbo happen, the job needs both foo and bar to happen again? | 10:38 |
| j_ | no | 10:38 |
| Keybuk | no? what happens once a job stops then? | 10:38 |
| Keybuk | which events can restart it? | 10:38 |
| j_ | not necessarlely | 10:38 |
| j_ | you may need to a once condition | 10:39 |
| j_ | like that | 10:40 |
| Keybuk | ? | 10:40 |
| j_ | start_once on foo and bar | 10:40 |
| Keybuk | ? | 10:40 |
| j_ | stop on frodo or bilbo | 10:40 |
| j_ | respan on foo or bar | 10:41 |
| Keybuk | that makes it insanely complicated ;) | 10:41 |
| j_ | You're right | 10:41 |
| Keybuk | since then upstart would need to track whether a job has been run once or not :) | 10:41 |
| j_ | I think that the problem is to known what do to respam it | 10:42 |
| Keybuk | in practice I think that consistency is better than flexibility | 10:43 |
| Keybuk | since it's easier to document consistent behaviour | 10:43 |
| Keybuk | and consistent behaviour has emergent properties | 10:43 |
| Keybuk | the problem I hit was I implemented it to both events had to happen again | 10:43 |
| Keybuk | once a job was in stop/waiting, it "forgot" what had started it | 10:43 |
| Keybuk | the problem was that this worked fine | 10:43 |
| Keybuk | except when the events happened while the job was still stopping | 10:43 |
| Keybuk | in which case either one would start it again | 10:44 |
| Keybuk | so you ended up with a curious situation where the behaviour depended on how quick you were | 10:44 |
| Keybuk | the worst kind of race condition | 10:44 |
| Keybuk | so I realised that the event expression has to be evaluated | 10:44 |
| Keybuk | but then instantly forgotten the moment it's true | 10:44 |
| Keybuk | instead somehow transferring the result of that into the job | 10:44 |
| Keybuk | not as easy as it appeared | 10:44 |
| j_ | could it be possible to add a "schedule work" and a lock of the events when you have a stop event | 10:46 |
| Keybuk | j_: sorry, I don't follow | 10:47 |
| j_ | that will fix the problem, when you have a stop , if a new event arrive it will be handle after the stop not a the same time | 10:48 |
| Jc2k | ahh | 10:49 |
| Jc2k | a queue | 10:49 |
| j_ | yes | 10:49 |
| Jc2k | j_: is that what you meant? | 10:49 |
| Jc2k | ahh | 10:49 |
| Jc2k | too slow | 10:49 |
| Jc2k | :P | 10:49 |
| j_ | just when you have a stop condition and only for its events | 10:50 |
| j_ | it will append not every time | 10:50 |
| Keybuk | or make the expression indempotent | 10:56 |
| Keybuk | so once evaluation has finished, it can safely be evaluated again immediately | 10:56 |
| j_ | what did you if a stop takes 1 minutes | 11:04 |
| j_ | ? | 11:05 |
| Keybuk | it'd be restarted at the end of it | 11:07 |
| Keybuk | since the goal would be start, so on leaving the post-stop state, it'd move back to pre-start | 11:07 |
| j_ | so you have a queue | 11:08 |
| Keybuk | no | 11:08 |
| j_ | how did you do? | 11:09 |
| Keybuk | as I said, making the event expression indempotent | 11:09 |
| Keybuk | once evaluated to true, the result is copied into the job | 11:10 |
| Keybuk | and then the expression is cleared | 11:10 |
| Keybuk | leaving it to be evaluated again immediately | 11:10 |
| Keybuk | ( bah, lifeless isn't online ... | 11:13 |
| Keybuk | I can't troll him with BZR IS GIVING ME A SUB-OPTIMAL EXPERIENCE | 11:13 |
| Keybuk | "git would handle my use case much better" | 11:13 |
| Keybuk | etc. :p ) | 11:13 |
| Jc2k | troll me if you like, im the anti-git troll on ddl after all :) | 11:15 |
| Keybuk | unfortunately I don't like git either | 11:16 |
| Keybuk | I rather like bzr | 11:16 |
| Keybuk | except when it behaves like a moronic child, like it's doing right now | 11:16 |
| Keybuk | *all* I want to do is cherry-pick commits | 11:17 |
| Keybuk | apparently this is hard | 11:17 |
| Jc2k | :D | 11:17 |
| === Jc2k suddenly remembers your pro-bzr blog post :) | ||
| Keybuk | Holy Crap | 11:21 |
| Keybuk | 0.3.8 was released exactly 7 months ago | 11:21 |
| j_ | And when will arrive the new release? | 11:22 |
| Keybuk | which new release? :) | 11:23 |
| ion_ | Upstart XP | 11:24 |
| AlexExtreme | Huh? XP? Don't you mean Vista? ;) | 11:24 |
| Keybuk | wasn't Vista the name of an Amiga program to render landscapes? | 11:24 |
| j_ | 0.3.9 or 0.4.0 | 11:25 |
| Keybuk | there won't be an 0.4.0 | 11:27 |
| Keybuk | next planned major is 0.5 | 11:27 |
| Keybuk | see topic :) | 11:27 |
| j_ | I'm currently read the webpage | 11:28 |
| Keybuk | https://lists.ubuntu.com/archives/upstart-devel/2007-October/000468.html | 11:28 |
| j_ | yes | 11:30 |
| ion_ | Hm. I remember the program, but i dont remember its name. | 11:31 |
| ion_ | It was a really cool piece of software. :-) | 11:32 |
| ion_ | (Assuming were thinking of the same Amiga program that generates landscapes.) | 11:32 |
| Keybuk | Wikipedia says it was Vista | 11:32 |
| Keybuk | and then later, VistaPro | 11:32 |
| ion_ | Anyone watch Heroes? http://heh.fi/heroes/ </spam> | 11:34 |
| Keybuk | ion_: am about half way through it | 11:35 |
| Jc2k | im in search of s2 | 11:35 |
| ion_ | Have you read the comics? The episodes often assume youve read the corresponding ones as well. | 11:35 |
| ion_ | (And thus the page, to easily know which ones to read between which episodes.) | 11:36 |
| Keybuk | ion_: I didn't even know there were comics | 11:37 |
| === Jc2k too | ||
| ion_ | Some times the comics enlighten the history of existing characters; some times they even originally introduce characters used in the following episodes. | 11:39 |
| Keybuk | j_: https://launchpad.net/upstart/0.3/0.3.9 | 11:46 |
| === ..[topic/#upstart:Keybuk] : Upstart 0.3.9 | http://upstart.ubuntu.com/ | http://people.ubuntu.com/~fabbione/irclogs/ | https://lists.ubuntu.com/archives/upstart-devel/2007-October/000468.html | ||
| j_ | Keybuk: thanks | 11:51 |
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