16 lines
921 B
Text
16 lines
921 B
Text
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Solid day of working on repository recovery. Got `git recover-repository
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--force` working, which involves fixing up branches that refer to missing
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objects. Mostly straightforward traversal of git commits, trees, blobs, to
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find when a branch has a problem, and identify an old version of it that
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predates the missing object. (Can also find them in the reflog.)
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The main complication turned out to be that `git branch -D` and `git
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show-ref` don't behave very well when the commit objects pointed to by refs
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are themselves missing. And git has no low-level plumbing that avoids
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falling over these problems, so I had to write it myself.
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Testing has turned up one unexpected problem: Git's index can itself refer
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to missing objects, and that will break future commits, etc. So I need to
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find a way to validate the index, and when it's got problems,
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either throw it out, or possibly recover some of the staged data from it.
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