#2627 BLOC Trial-3: Datastore should check versions and recreate indexes automatically.

[Zarro Boogs per Child]

#2627: Datastore should check versions and recreate indexes automatically.
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 Reporter:  jg         |       Owner:  bcsaller                         
     Type:  defect     |      Status:  new                              
 Priority:  blocker    |   Milestone:  Trial-3                          
Component:  datastore  |     Version:  Development build as of this date
 Keywords:             |    Verified:  0                                
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 Build 341 upgraded from build 340 via the upgrade path would not put up
 the USB icon in the journal.

 Deleting the index files from the USB key "fixed" the problem; the key
 would then be recognized and the icon on the journal restored.

 I think we need version checking of the datastore index files implemented
 so that these sorts of failures don't happen in the field; the old index
 should be removed (or potentially converted), and the index rebuilt.

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Ticket URL: <https://dev.laptop.org/ticket/2627>
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