add a warning and a related todo
arising from a conversation at FOSSY
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@ -70,6 +70,9 @@ Finally the annexed file contents need to be copied to the new repository:
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# Fix up annex links to content and make sure it's all ok.
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git annex fsck
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Warning: This method of copying the annexed file contents and dropping
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the unused ones causes the git-annex branch to log information.
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# alternative older method
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Here is another way to do it. Suppose the old big repo is at `~/oldrepo`:
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14
doc/todo/filter-branch_for_objects.mdwn
Normal file
14
doc/todo/filter-branch_for_objects.mdwn
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@ -0,0 +1,14 @@
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`git-annex filter-branch` can be used to split a git-annex repository.
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However, the approach in [[tips/splitting_a_repository]] then copies all
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objects into the new repository and drops unused objects. And dropunused
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updates location log in that situation, even when the location log didn't
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exist in that repository before. So, that approach leaks information about
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objects that were in the original repository into the split repository.
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Splitting a git-annex repository is something that, when you need to do it,
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you may have good reasons to want to avoid any such leakage of
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information.
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So perhaps add a feature that copies only the needed objects over to the
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split repository? Or update the tip with a better method that avoids this
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problem. --[[Joey]]
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