35 lines
1.8 KiB
Text
35 lines
1.8 KiB
Text
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A big missing peice of the assistant is doing something about the content
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of old versions of files, and deleted files. In direct mode, editing or
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deleting a file necessarily loses its content from the local repository,
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but the content can still hang around in other repositories. So, the
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assistant needs to do something about that to avoid eating up disk space
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unnecessarily.
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I built on recent work, that lets preferred content expressions be matched
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against keys with no associated file. This means that I can run unused keys
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through all the machinery in the assistant that handles file transfers, and
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they'll end being moved to whatever repository wants them. To control which
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repositories do want to retain unused files, and which not, I added a
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`unused` keyword to preferred content expressions. Client repositories and
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transfer repositories do not want to retain unused files, but backup etc
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repos do.
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One nice thing about this `unused` preferred content implementation is that
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it doesn't slow down normal matching of preferred content expressions at
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all. Can you guess why not? See [[!commit 4b55afe9e92c045d72b78747021e15e8dfc16416]]
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So, the assistant will run `git annex unused` on a daily basis, and
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cause unused files to flow to repositories that want them. But what if no
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repositories do? To guard against filling up the local disk, there's
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a `annex.expireunused` configuration setting, that can cause old unused
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files to be deleted by the assistant after a number of days.
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I made the assistant check if there seem to be a lot of unused files piling
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up. (1000+, or 10% of disk used by them, or more space taken by unused files
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than is free.) If so, it'll pop up an alert to nudge the user to configure
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annex.expireunused.
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Still need to build the UI to configure that, and test all of this.
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Today's work was sponsored by Samuel Tardieu.
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