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Bug 169892

Summary: Need dynamic fallback content of SFS
Product: platform Reporter: Jaroslav Tulach <jtulach>
Component: FilesystemsAssignee: Jaroslav Tulach <jtulach>
Severity: blocker CC: apireviews, jskrivanek
Priority: P2 Keywords: API, API_REVIEW_FAST
Version: 6.x   
Hardware: All   
OS: All   
Issue Type: ENHANCEMENT Exception Reporter:
Bug Depends on: 26338, 179977    
Bug Blocks: 162780    
Attachments: Proposal
Full patch (including ergonomics change) and fix for JG02

Description Jaroslav Tulach 2009-08-05 13:20:05 UTC
Since issue 26338 has been implemented, anyone can provide a dynamic content of system file system. Such content 
overrides defaults provided by modules, but can be overriden by user changes. However to solve issue 162780 I need to 
provide content that is behind the module layers - a kind of fallback.
Comment 1 Jaroslav Tulach 2009-08-05 13:27:43 UTC
Created attachment 85837 [details]
Comment 2 Jesse Glick 2009-08-05 16:26:30 UTC
[JG01] The connection to issue #162780, and hence the motivation for this issue, is not explained at all. It would seem
that the straightforward fix of issue #162780 would be for ergonomics to consider a "feature" installed only if all kit
modules in the cluster are enabled, rather than at least one.

[JG02] You forgot to fix ExternalUtil.MainFS.computeDelegates.
Comment 3 Jaroslav Tulach 2009-08-05 17:20:41 UTC
Created attachment 85866 [details]
Full patch (including ergonomics change) and fix for JG02
Comment 4 Jaroslav Tulach 2009-08-05 17:25:26 UTC
Re. JG01: That is probably more for discussion in the issue 162780, but shortly: Yes, I need to change the logic 
according to your suggestion (e.g. installed only when all modules installed), but also I need to make sure that if a 
single module provides a template, then it takes precedence over the ergonomics definition. I tried various tricks, 
but providing "fallback" layer is the only one that is not hack. Works nicely and contains even less dynamics (e.g. 
all ergonomics layers always on) than the 6.7 system.
Comment 5 Jesse Glick 2009-08-06 00:36:45 UTC
BTW I would suggest the new test code be added to ExternalUtilTest so that C-F6 from will check
validity of code in that class.
Comment 6 Jaroslav Tulach 2009-08-11 05:19:19 UTC
I'll integrate tomorrow (probably without addressing BTW).
Comment 7 Jaroslav Tulach 2009-08-12 09:11:27 UTC
Comment 8 Quality Engineering 2009-08-13 06:06:22 UTC
Integrated into 'main-golden', will be available in build *200908130201* on (upload may still be in progress)
User: Jaroslav Tulach <>
Log: #169892: Dynamic 'fallback' content of system file system