[erlang-questions] release upgrades and code loading
Ivan Uemlianin
ivan@REDACTED
Sat Feb 15 13:51:48 CET 2014
Dear Alexander
Thanks for yor comment.
I shall look into what genappup does but two reasons against my using it are: I'm currently liking doing things explictly and manually, partly to learn; I've moved away from using rebar.
Reading that page though, I realise I might have written some incorrect appups. (Will go and check)
Best wishes
Ivan
--
festina lente
> On 15 Feb 2014, at 12:20, Alexander Petrovsky <askjuise@REDACTED> wrote:
>
> Ivan, by the way for generate appup files you can use genappup - http://www.echorussia.ru/erlang-releases.html
>
>
> 2014-02-13 23:26 GMT+03:00 Ivan Uemlianin <ivan@REDACTED>:
>> Paul's interpretation is what I was trying to do with this upgrade.
>>
>> Ivan
>>
>> --
>> festina lente
>>
>>
>> > On 13 Feb 2014, at 20:17, Paul Davis <paul.joseph.davis@REDACTED> wrote:
>> >
>> > Mike, pretty sure its upgrading two apps to the same version.
>> >
>> > app1 is 20140211.1 -> 20140213.1
>> > app2 is 20140207.1 -> 20140213.1
>> >
>> >> On Thu, Feb 13, 2014 at 1:59 PM, Mike Oxford <moxford@REDACTED> wrote:
>> >> It looks like you're trying to suspend version 20140213.1 and replace it
>> >> with 20140213.1 (the same version.)
>> >>
>> >>
>> >>
>> >>> On Thu, Feb 13, 2014 at 11:51 AM, Ivan Uemlianin <ivan@REDACTED> wrote:
>> >>>
>> >>> Sorry don't follow
>> >>>
>> >>> --
>> >>> festina lente
>> >>>
>> >>>
>> >>> On 13 Feb 2014, at 19:35, Mike Oxford <moxford@REDACTED> wrote:
>> >>>
>> >>> [{"1.0.6",[],
>> >>> [{load_object_code,{app1,"20140213.1",[app1]}},
>> >>> {load_object_code,{app2,"20140213.1",[app2]}},
>> >>>
>> >>> Replacing a version with itself?
>> >>>
>> >>>
>> >>>
>> >>>> On Thu, Feb 13, 2014 at 11:03 AM, Ivan Uemlianin <ivan@REDACTED> wrote:
>> >>>>
>> >>>> Dear Mike
>> >>>>
>> >>>> Thanks for your help.
>> >>>>
>> >>>> Here's a recent relup. After this upgrade, I had to manually code_load
>> >>>> and purge app1:
>> >>>>
>> >>>> {"1.0.7",
>> >>>> [{"1.0.6",[],
>> >>>> [{load_object_code,{app1,"20140213.1",[app1]}},
>> >>>> {load_object_code,{app2,"20140213.1",[app2]}},
>> >>>> point_of_no_return,
>> >>>> {suspend,[app1]},
>> >>>> {load,{app1,brutal_purge,brutal_purge}},
>> >>>> {code_change,up,[{app1,[from1to2]}]},
>> >>>> {resume,[app1]},
>> >>>> {suspend,[app2]},
>> >>>> {load,{app2,brutal_purge,brutal_purge}},
>> >>>> {code_change,up,[{app2,[from1to2]}]},
>> >>>> {resume,[app2]}]}],
>> >>>> [{"1.0.6",[],
>> >>>> [{load_object_code,{app1,"20140211.1",[app1]}},
>> >>>> {load_object_code,{app2,"20140207.1",[app2]}},
>> >>>> point_of_no_return,
>> >>>> {suspend,[app1]},
>> >>>> {code_change,down,[{app1,[from2to1]}]},
>> >>>> {load,{app1,brutal_purge,brutal_purge}},
>> >>>> {resume,[app1]},
>> >>>> {suspend,[app2]},
>> >>>> {code_change,down,[{app2,[from2to1]}]},
>> >>>> {load,{app2,brutal_purge,brutal_purge}},
>> >>>> {resume,[app2]}]}]}.
>> >>>>
>> >>>> Best wishes
>> >>>>
>> >>>> Ivan
>> >>>>
>> >>>>
>> >>>>
>> >>>>> On 13/02/2014 18:54, Mike Oxford wrote:
>> >>>>>
>> >>>>> Is your brutal_purge on the PostPurge or the PrePurge?
>> >>>>>
>> >>>>>
>> >>>>> On Thu, Feb 13, 2014 at 10:00 AM, Ivan Uemlianin <ivan@REDACTED
>> >>>>> <mailto:ivan@REDACTED>> wrote:
>> >>>>>
>> >>>>> Dear All
>> >>>>>
>> >>>>> I am just getting started with live release upgrades, using relx and
>> >>>>> following this tutorial:
>> >>>>>
>> >>>>> http://blog.troutwine.us/2013/__09/13/trivial_otp_releases.__html
>> >>>>>
>> >>>>> <http://blog.troutwine.us/2013/09/13/trivial_otp_releases.html>
>> >>>>>
>> >>>>> Everything seems to work as advertised, except sometimes I need to
>> >>>>> explicitly load the code into the running vm (i.e., using
>> >>>>> code_load_file/1) for the new stuff to take effect. The function
>> >>>>> release_handler:which___releases/0 reports the new release as active
>> >>>>>
>> >>>>> and permanent, but I can see from behaviour that old versions of
>> >>>>> certain modules are still running and handling data.
>> >>>>>
>> >>>>> I can't be much more specific I'm afraid. One example: one
>> >>>>> application uses cowboy. If a release upgrade changes a cowboy
>> >>>>> resource module, the new release version might still be running the
>> >>>>> old version of that module until I load_file and purge.
>> >>>>>
>> >>>>> Why might this be happening? Am I missing something in the
>> >>>>> packaging and upgrade process? Is there a better way I can write my
>> >>>>> modules?
>> >>>>>
>> >>>>> If the information above is too vague, what should I look out for
>> >>>>> next time this happens?
>> >>>>>
>> >>>>> With thanks and best wishes
>> >>>>>
>> >>>>> Ivan
>> >>>>>
>> >>>>>
>> >>>>> --
>> >>>>> ==============================__==============================
>> >>>>>
>> >>>>> Ivan A. Uemlianin PhD
>> >>>>> Llaisdy
>> >>>>> Speech Technology Research and Development
>> >>>>>
>> >>>>> ivan@REDACTED <mailto:ivan@REDACTED>
>> >>>>> www.llaisdy.com <http://www.llaisdy.com>
>> >>>>> llaisdy.wordpress.com <http://llaisdy.wordpress.com>
>> >>>>> github.com/llaisdy <http://github.com/llaisdy>
>> >>>>> www.linkedin.com/in/__ivanuemlianin
>> >>>>> <http://www.linkedin.com/in/ivanuemlianin>
>> >>>>>
>> >>>>> festina lente
>> >>>>> ==============================__==============================
>> >>>>> _________________________________________________
>> >>>>> erlang-questions mailing list
>> >>>>> erlang-questions@REDACTED <mailto:erlang-questions@REDACTED>
>> >>>>> http://erlang.org/mailman/__listinfo/erlang-questions
>> >>>>> <http://erlang.org/mailman/listinfo/erlang-questions>
>> >>>>
>> >>>> --
>> >>>> ============================================================
>> >>>> Ivan A. Uemlianin PhD
>> >>>> Llaisdy
>> >>>> Speech Technology Research and Development
>> >>>>
>> >>>> ivan@REDACTED
>> >>>> www.llaisdy.com
>> >>>> llaisdy.wordpress.com
>> >>>> github.com/llaisdy
>> >>>> www.linkedin.com/in/ivanuemlianin
>> >>>>
>> >>>> festina lente
>> >>>> ============================================================
>> >>
>> >>
>> >> _______________________________________________
>> >> erlang-questions mailing list
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>> >>
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>
>
>
> --
> Петровский Александр / Alexander Petrovsky,
>
> Skype: askjuise
> Phone: +7 914 8 820 815
>
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