[asterisk-bugs] [JIRA] (DAHLIN-25) [patch] bad master selection

[Pavel Selivanov (JIRA)]

    [ https://issues.asterisk.org/jira/browse/DAHLIN-25?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=201605#comment-201605 ] 

Pavel Selivanov commented on DAHLIN-25:
---------------------------------------

Patch file provided https://issues.asterisk.org/jira/secure/attachment/45926/dahdi-base.c.patch .
Please, let me know if have any questions.

                
> [patch] bad master selection
> ----------------------------
>
>                 Key: DAHLIN-25
>                 URL: https://issues.asterisk.org/jira/browse/DAHLIN-25
>             Project: DAHDI-Linux
>          Issue Type: Bug
>          Components: dahdi (the module)
>            Reporter: Pavel Selivanov
>            Assignee: Russ Meyerriecks
>         Attachments: 0001-dahdi-wip-Fix-dynamic_loc-span-operation-with-DAHDI-.patch, dahdi-base.c.patch, dahdi-base.c.patch, dahdi-base.c_syncprio.patch, dahdi_dummy.c.patch, dahdi_dummy.c_syncprio.patch, dahdi_dynamic.c_syncprio.patch, zaptel-base.c.patch, ztdummy.c.patch
>
>
> Current dahdi master handling work in the following way:
> The first SPAN become a master
> If a new registered !!! SPAN is preferred , it is the new master
> If a span is unregistered - the new master is the first available span
> If master SPAN is in alarm state - the new master is the first non in alarm state SPAN
> So
> 1. dahdi-dummy once loaded will be the master forever.
> 2. even not-running SPAN can be a master
> 3. master implementation is ugly...
> ****** ADDITIONAL INFORMATION ******
> Implemented: correct(symmetric) master arbitrage
> 1. trying preffered master SPAN
> 2. trying non-zero channel SPANS
> 3. trying zero-channel SPANS (ztdummy,...)
> thus:
> 1. dahdi-dynamic CAN be (and it works perfect) a master
> 2. at any time, we can tell/expect - who is the master
> 3. If (and only if) we have no master - dahdi-dummy will be our master

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