[erlang-questions] release upgrades and code loading
Ivan Uemlianin
ivan@REDACTED
Thu Feb 13 21:26:22 CET 2014
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
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>>>>> http://erlang.org/mailman/__listinfo/erlang-questions
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>>>>
>>>> --
>>>> ============================================================
>>>> 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
>>>> ============================================================
>>
>>
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