[tahoe-lafs-trac-stream] [tahoe-lafs] #641: tahoe backup should be able to backup symlinks

[tahoe-lafs]

#641: tahoe backup should be able to backup symlinks
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     Reporter:           |      Owner:
  francois               |     Status:  new
         Type:  defect   |  Milestone:  undecided
     Priority:  minor    |    Version:  1.3.0
    Component:  code-    |   Keywords:  tahoe-backup symlink reliability
  frontend-cli           |  news-done
   Resolution:           |
Launchpad Bug:           |
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Comment (by socrates1024):

 I would also like for "tahoe backup" to handle symlinks. Most
 specifically, I like to symlink directories I want backed-up into my main
 "Dropbox" folder (the target of "tahoe backup" in my crontab).

 After a few experiments with Dropbox, it seems that Dropbox 'follows'
 symlinks to a limit depth, but it doesn't 'preserve' the symlinks (i.e. it
 does not behave like rsync --links). There seem to be a handful of hazards
 with following symlinks: you can have infinite recursion if circular
 symlinks aren't detected, and even without recursion, symlinks can cause
 redundant data to be stored.

 I'm attaching a patch just to show my approach so far, to enforce a
 symlink depth limit of 3 (for directories only). I'll look into making
 tests that show how this approach behaves. For my immediate personal
 needs, this is already a solution.

-- 
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/641#comment:13>
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