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| jk44 | hi, i have noticed a possible bug in upstart | 11:18 |
|---|---|---|
| jk44 | i wrote this job : | 11:19 |
| jk44 | console output | 11:19 |
| jk44 | pre-start script | 11:19 |
| jk44 | echo "**UPSTART : ************* launching RCS ********** " | 11:19 |
| jk44 | end script | 11:19 |
| jk44 | script | 11:19 |
| jk44 | echo "avant exec" | 11:19 |
| jk44 | exec /etc/init.d/rcS | 11:19 |
| jk44 | echo "apres exec" | 11:19 |
| jk44 | end script | 11:19 |
| jk44 | post-start script | 11:19 |
| jk44 | echo "will try to launch runlevel 3" | 11:19 |
| jk44 | echo "done rlv 3" | 11:19 |
| jk44 | 11:19 | |
| jk44 | echo "gona launch rcS" | 11:19 |
| jk44 | end script | 11:19 |
| jk44 | and post start is executed before exec script | 11:19 |
| Keybuk | incorrect | 11:20 |
| Keybuk | post start is executed alongside the exec script | 11:20 |
| jk44 | ok, it explain what i get | 11:21 |
| Keybuk | which wins is dependant on such matters as your kernel, and possibly the one that outputs first is running second, and it's the console buffer that's fooling you | 11:21 |
| Keybuk | post-start makes most sense when the process run by exec is not immediately redy | 11:21 |
| Keybuk | you can use the post-start script to poll the daemon until it's accepting connections | 11:21 |
| Keybuk | the job won't be marked running until the post-start script exits | 11:22 |
| jk44 | ok, thk very much | 11:22 |
| jk44 | another dub question : | 11:22 |
| jk44 | when a job fail starting, how can i recover, (as it has not failed) | 11:23 |
| jk44 | and start the other jobs ? | 11:23 |
| jk44 | is "started failed or started" | 11:23 |
| jk44 | the solution ? | 11:23 |
| jk44 | i am trying that, but quite unsuccessfully | 11:24 |
| Keybuk | start on stopped JOB failed | 11:29 |
| Keybuk | the stopped event for the job will include the argument "failed", and will include arguments and environment saying what failed, etc. | 11:30 |
| Keybuk | http://upstart.ubuntu.com/wiki/JobFailedEvent | 11:30 |
| Keybuk | ^ see that | 11:30 |
| Keybuk | e.g. | 11:30 |
| Keybuk | stopped apache failed | 11:30 |
| Keybuk | EXIT_SIGNAL=SIGSEGV | 11:30 |
| jk44 | ok, sorry for bothering with such uninterresting question ^^, i had not very well understood the doc (poor english :s) | 11:31 |
| Keybuk | that's ok | 11:34 |
| Keybuk | the docs aren't great yet | 11:34 |
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| AlexExtreme | hmm | 02:38 |
| AlexExtreme | this is weird | 02:38 |
| Keybuk | hmm? | 02:38 |
| AlexExtreme | i've got some native jobs written for LFS | 02:39 |
| AlexExtreme | (just playing around) | 02:39 |
| AlexExtreme | it boots fine | 02:39 |
| AlexExtreme | apart from somewhere a bash syntax error gets printed | 02:39 |
| AlexExtreme | it says the syntax error is in /dev/fd/7 every time | 02:39 |
| AlexExtreme | i can't figure out why | 02:40 |
| Keybuk | heh | 02:40 |
| Keybuk | /dev/fd/7 is the name of the shell script upstart executes if it's > 1024k or so | 02:40 |
| AlexExtreme | strange | 02:41 |
| Keybuk | why? | 02:42 |
| AlexExtreme | i have no job even 2kb | 02:42 |
| Keybuk | that's a little more unusual | 02:42 |
| Keybuk | oh, sorry, 1024 bytes | 02:42 |
| Keybuk | not K | 02:42 |
| Keybuk | I always do that | 02:42 |
| Keybuk | 1K | 02:42 |
| AlexExtreme | ah | 02:42 |
| AlexExtreme | that limits it to 2 jobs | 02:42 |
| Keybuk | (the /dev/fd thing is because upstart makes a pipe on which it arranges the script to be executed; and that's the trick to passing it to sh as a file) | 02:44 |
| AlexExtreme | k | 02:44 |
| AlexExtreme | the weird thing though, is that i get no "job failed" message from upstart | 02:44 |
| Keybuk | passing it on "standard input" would mean the script couldn't use exec < or things like that | 02:44 |
| Keybuk | and passing it in the arguments could exceed available space | 02:44 |
| AlexExtreme | ah, got it | 02:49 |
| AlexExtreme | stupid type | 02:49 |
| AlexExtreme | *typo | 02:49 |
| Keybuk | dunno why it doesn't fail | 02:50 |
| Keybuk | maybe you've got a set +e in there? or an ||/&&, or it's part of an if, etc. | 02:50 |
| AlexExtreme | yeah, it was part of a || | 02:51 |
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| AlexExtreme | now *that's* what i call optimization | 06:35 |
| AlexExtreme | http://www.alex-smith.me.uk/files/bootchart-ud.png | 06:35 |
| AlexExtreme | :D | 06:35 |
| ion_ | :-) | 06:37 |
| tale | AlexExtreme, I'm not an upstart expert, but that distro wouldn't do much, right? | 07:38 |
| AlexExtreme | the boot sequence does actually run more stuff, just it seems that bootchart missed some stuff | 07:39 |
| AlexExtreme | currently it boots to a text-based multiuser system with networking and ssh | 07:39 |
| tale | ah | 07:40 |
| tale | what are some of the fastest boot times you guys are getting with the latest development code? | 07:40 |
| AlexExtreme | that is the fastest boot i have ever got with any init system | 07:41 |
| tale | but, what about a normal ubuntu install? | 07:44 |
| AlexExtreme | i haven't tried with ubuntu, since i don't use it ;) | 07:44 |
| tale | what distro do you use? | 07:44 |
| tale | I assumed ubuntu since most distros don't use upstart | 07:44 |
| AlexExtreme | frugalware atm | 07:45 |
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