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Re: [Bug 886321] Re: Upstart issue and mythbackend

To: Bug 886321 <886321@xxxxxxxxxxxxxxxxxx>
From: Mario Limonciello <superm1@xxxxxxxxxx>
Date: Tue, 3 Jan 2012 09:07:04 -0600
Cc: mythbuntu-bugs@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20120103072708.12217.62134.malone@wampee.canonical.com>
Sender: superm1@xxxxxxxxx
Glancing through the source this is the only explicit reference I see to
code 127:

libs/libmythdb/exitcodes.h:#define GENERIC_EXIT_CMD_NOT_FOUND
 127
libs/libmythdb/exitcodes.h:#define MYTHSYSTEM__EXIT__CMD_NOT_FOUND
  GENERIC_EXIT_CMD_NOT_FOUND

libs/libmythtv/jobqueue.cpp:            (result ==
MYTHSYSTEM__EXIT__CMD_NOT_FOUND))
libs/libmythtv/jobqueue.cpp:        (breaksFound ==
MYTHSYSTEM__EXIT__CMD_NOT_FOUND))
libs/libmythtv/jobqueue.cpp:        (result ==
MYTHSYSTEM__EXIT__CMD_NOT_FOUND))

So if a command isn't found while setting up job queue stuff myth_system
sets it.  Do you happen to have any user jobs setup? (perhapy wrongly).

Additionally any time that an external command is called it returns it's
return value, which I suppose is possible to be 127 too.

On Tue, Jan 3, 2012 at 01:27, monochromec <monochromec@xxxxxxxxx> wrote:

> Further observation: doesn't seem to be a timing problem / race
> condition right after system init as this behaviour persists way beyond
> boot stage, ie. is reproducible all along the way.
>
> What would be of great help to track this down is what exit code 127
> from the backend exactly means. Esp. as the backend exits before ANY
> logging information is produced...
>
> Here's what initctl produced when setting the log level to debug:
>
> Jan  3 08:10:58 htpc kernel: [ 1443.013593] init: mythtv-backend goal
> changed from stop to start
> Jan  3 08:10:58 htpc kernel: [ 1443.013954] init: mythtv-backend state
> changed from waiting to starting
> Jan  3 08:10:58 htpc kernel: [ 1443.014288] init: event_new: Pending
> starting event
> Jan  3 08:10:58 htpc kernel: [ 1443.014366] init: Handling starting event
> Jan  3 08:10:58 htpc kernel: [ 1443.014588] init: event_finished: Finished
> starting event
> Jan  3 08:10:58 htpc kernel: [ 1443.014634] init: mythtv-backend state
> changed from starting to pre-start
> Jan  3 08:10:58 htpc kernel: [ 1443.016178] init: mythtv-backend pre-start
> process (2959)
> Jan  3 08:10:58 htpc kernel: [ 1443.032549] init: mythtv-backend pre-start
> process (2959) exited normally
> Jan  3 08:10:58 htpc kernel: [ 1443.032769] init: mythtv-backend state
> changed from pre-start to spawned
> Jan  3 08:10:58 htpc kernel: [ 1443.034070] init: mythtv-backend main
> process (2965)
> Jan  3 08:10:58 htpc kernel: [ 1443.034206] init: mythtv-backend state
> changed from spawned to post-start
> Jan  3 08:10:58 htpc kernel: [ 1443.034439] init: mythtv-backend state
> changed from post-start to running
> Jan  3 08:10:58 htpc kernel: [ 1443.034581] init: event_new: Pending
> started event
> Jan  3 08:10:58 htpc kernel: [ 1443.034692] init: Handling started event
> Jan  3 08:10:58 htpc kernel: [ 1443.035086] init: event_finished: Finished
> started event
> Jan  3 08:10:58 htpc Myth upstart: Tue Jan 3 08:10:58 CET 2012
> Jan  3 08:10:58 htpc kernel: [ 1443.045415] init: mythtv-backend main
> process (2965) terminated with status 127
> Jan  3 08:10:58 htpc kernel: [ 1443.045444] init: mythtv-backend main
> process ended, respawning
> Jan  3 08:10:58 htpc kernel: [ 1443.045513] init: mythtv-backend state
> changed from running to stopping
> Jan  3 08:10:58 htpc kernel: [ 1443.045596] init: event_new: Pending
> stopping event
> Jan  3 08:10:58 htpc kernel: [ 1443.045650] init: Handling stopping event
> Jan  3 08:10:58 htpc kernel: [ 1443.045719] init: event_finished: Finished
> stopping event
> Jan  3 08:10:58 htpc kernel: [ 1443.045733] init: mythtv-backend state
> changed from stopping to killed
> Jan  3 08:10:58 htpc kernel: [ 1443.045771] init: mythtv-backend state
> changed from killed to post-stop
> Jan  3 08:10:58 htpc kernel: [ 1443.045804] init: mythtv-backend state
> changed from post-stop to starting
> Jan  3 08:10:58 htpc kernel: [ 1443.045840] init: event_new: Pending
> starting event
> Jan  3 08:10:58 htpc kernel: [ 1443.045855] init: Handling starting event
> Jan  3 08:10:58 htpc kernel: [ 1443.045908] init: event_finished: Finished
> starting event
> Jan  3 08:10:58 htpc kernel: [ 1443.045921] init: mythtv-backend state
> changed from starting to pre-start
> Jan  3 08:10:58 htpc kernel: [ 1443.047490] init: mythtv-backend pre-start
> process (2969)
> Jan  3 08:10:58 htpc kernel: [ 1443.060452] init: mythtv-backend pre-start
> process (2969) exited normally
> Jan  3 08:10:58 htpc kernel: [ 1443.060551] init: mythtv-backend state
> changed from pre-start to spawned
> Jan  3 08:10:58 htpc kernel: [ 1443.061526] init: mythtv-backend main
> process (2975)
> Jan  3 08:10:58 htpc kernel: [ 1443.061713] init: mythtv-backend state
> changed from spawned to post-start
> Jan  3 08:10:58 htpc kernel: [ 1443.062085] init: mythtv-backend state
> changed from post-start to running
> Jan  3 08:10:58 htpc kernel: [ 1443.062351] init: event_new: Pending
> started event
> Jan  3 08:10:58 htpc kernel: [ 1443.062427] init: Handling started event
> Jan  3 08:10:58 htpc kernel: [ 1443.062797] init: event_finished: Finished
> started event
> Jan  3 08:10:58 htpc Myth upstart: Tue Jan 3 08:10:58 CET 2012
> Jan  3 08:10:58 htpc kernel: [ 1443.073113] init: mythtv-backend main
> process (2975) terminated with status 127
> Jan  3 08:10:58 htpc kernel: [ 1443.073184] init: mythtv-backend main
> process ended, respawning
> Jan  3 08:10:58 htpc kernel: [ 1443.073372] init: mythtv-backend state
> changed from running to stopping
> Jan  3 08:10:58 htpc kernel: [ 1443.073590] init: event_new: Pending
> stopping event
> Jan  3 08:10:58 htpc kernel: [ 1443.073652] init: Handling stopping event
> Jan  3 08:10:58 htpc kernel: [ 1443.073835] init: event_finished: Finished
> stopping event
> Jan  3 08:10:58 htpc kernel: [ 1443.073881] init: mythtv-backend state
> changed from stopping to killed
> Jan  3 08:10:58 htpc kernel: [ 1443.074016] init: mythtv-backend state
> changed from killed to post-stop
> Jan  3 08:10:58 htpc kernel: [ 1443.074134] init: mythtv-backend state
> changed from post-stop to starting
> Jan  3 08:10:58 htpc kernel: [ 1443.074259] init: event_new: Pending
> starting event
> Jan  3 08:10:58 htpc kernel: [ 1443.074311] init: Handling starting event
> Jan  3 08:10:58 htpc kernel: [ 1443.074495] init: event_finished: Finished
> starting event
> Jan  3 08:10:58 htpc kernel: [ 1443.074540] init: mythtv-backend state
> changed from starting to pre-start
> Jan  3 08:10:58 htpc kernel: [ 1443.075501] init: mythtv-backend pre-start
> process (2979)
> Jan  3 08:10:58 htpc kernel: [ 1443.093153] init: mythtv-backend pre-start
> process (2979) exited normally
> Jan  3 08:10:58 htpc kernel: [ 1443.093353] init: mythtv-backend state
> changed from pre-start to spawned
> Jan  3 08:10:58 htpc kernel: [ 1443.095702] init: mythtv-backend main
> process (2985)
> Jan  3 08:10:58 htpc kernel: [ 1443.095868] init: mythtv-backend state
> changed from spawned to post-start
> Jan  3 08:10:58 htpc kernel: [ 1443.096120] init: mythtv-backend state
> changed from post-start to running
> Jan  3 08:10:58 htpc kernel: [ 1443.096331] init: event_new: Pending
> started event
> Jan  3 08:10:58 htpc kernel: [ 1443.096414] init: Handling started event
> Jan  3 08:10:58 htpc kernel: [ 1443.096782] init: event_finished: Finished
> started event
> Jan  3 08:10:58 htpc Myth upstart: Tue Jan 3 08:10:58 CET 2012
> Jan  3 08:10:58 htpc kernel: [ 1443.108234] init: mythtv-backend main
> process (2985) terminated with status 127
> Jan  3 08:10:58 htpc kernel: [ 1443.108293] init: mythtv-backend
> respawning too fast, stopped
> Jan  3 08:10:58 htpc kernel: [ 1443.108624] init: mythtv-backend goal
> changed from start to stop
> Jan  3 08:10:58 htpc kernel: [ 1443.108741] init: mythtv-backend state
> changed from running to stopping
> Jan  3 08:10:58 htpc kernel: [ 1443.108874] init: event_new: Pending
> stopping event
> Jan  3 08:10:58 htpc kernel: [ 1443.108938] init: Handling stopping event
> Jan  3 08:10:58 htpc kernel: [ 1443.109122] init: event_finished: Finished
> stopping event
> Jan  3 08:10:58 htpc kernel: [ 1443.109167] init: mythtv-backend state
> changed from stopping to killed
> Jan  3 08:10:58 htpc kernel: [ 1443.109280] init: mythtv-backend state
> changed from killed to post-stop
> Jan  3 08:10:58 htpc kernel: [ 1443.109391] init: mythtv-backend state
> changed from post-stop to waiting
> Jan  3 08:10:58 htpc kernel: [ 1443.109528] init: event_new: Pending
> stopped event
> Jan  3 08:10:58 htpc kernel: [ 1443.109592] init: job_change_state:
> Destroyed inactive instance mythtv-backend
> Jan  3 08:10:58 htpc kernel: [ 1443.109753] init: Handling stopped event
> Jan  3 08:10:58 htpc kernel: [ 1443.109918] init: event_finished: Finished
> stopped event
>
> --
> You received this bug notification because you are a member of Mythbuntu
> Bug Team, which is subscribed to mythtv in Ubuntu.
> https://bugs.launchpad.net/bugs/886321
>
> Title:
>  Upstart issue and mythbackend
>
> Status in “mythtv” package in Ubuntu:
>   Incomplete
>
> Bug description:
>  Strange problem with the backend during upstart on Ubuntu oneiric: the
>  syslog tells me that the backend respawns too quickly and thus gives
>  up on trying to start it via upstart.
>
>  Steps to reproduce:
>
>  1) Reboot system 2) Check with 'ps' and the syslog
>
>  I changed the interface from lo to eth0 in the pre-conditions and also
>  changed .5 to 60 in the script sections but to no avail...
>
>  ProblemType: Bug
>  DistroRelease: Ubuntu 11.10
>  Package: mythtv 2:0.24.0+fixes.20110908.1de0431-0ubuntu1
>  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
>  Uname: Linux 3.0.0-12-generic x86_64
>  ApportVersion: 1.23-0ubuntu3
>  Architecture: amd64
>  Date: Fri Nov  4 20:50:50 2011
>  Installed_mythtv_dbg: 0.0
>  PackageArchitecture: all
>  ProcEnviron:
>   LANGUAGE=en_US:en
>   LANG=en_US.UTF-8
>   SHELL=/bin/bash
>  SourcePackage: mythtv
>  UpgradeStatus: Upgraded to oneiric on 2011-10-15 (20 days ago)
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/mythtv/+bug/886321/+subscriptions
>
> _______________________________________________
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>



-- 
Mario Limonciello
superm1@xxxxxxxxx
References

[Bug 886321] [NEW] Upstart issue and mythbackend
From: monochromec, 2011-11-04
[Bug 886321] Re: Upstart issue and mythbackend
From: monochromec, 2012-01-03