37 lines
1.7 KiB
Text
37 lines
1.7 KiB
Text
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The use of `.git-annex` to store logs means that if a repo has branches
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and the user switched between them, git-annex will see different logs in
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the different branches, and so may miss info about what remotes have which
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files (though it can re-learn).
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An alternative would be to store the log data directly in the git repo
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as `pristine-tar` does. Problem with that approach is that git won't merge
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conflicting changes to log files if they are not in the currently checked
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out branch.
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It would be possible to use a branch with a tree like this, to avoid
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conflicts:
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key/uuid/time/status
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As long as new files are only added, and old timestamped files deleted,
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there would be no conflicts.
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A related problem though is the size of the tree objects git needs to
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commit. Having the logs in a separate branch doesn't help with that.
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As more keys are added, the tree object size will increase, and git will
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take longer and longer to commit, and use more space. One way to deal with
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this is simply by splitting the logs amoung subdirectories. Git then can
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reuse trees for most directories. (Check: Does it still have to build
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dup trees in memory?)
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Another approach would be to have git-annex *delete* old logs. Keep logs
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for the currently available files, or something like that. If other log
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info is needed, look back through history to find the first occurance of a
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log. Maybe even look at other branches -- so if the logs were on master,
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a new empty branch could be made and git-annex would still know where to
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get keys in that branch.
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Would have to be careful about conflicts when deleting and bringing back
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files with the same name. And would need to avoid expensive searching thru
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all history to try to find an old log file.
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