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@@ -734,6 +734,17 @@ connections and release the lock).
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The borg cache eats way too much disk space, what can I do?
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+This may especially happen if borg needs to rebuild the local "chunks" index -
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+either because it was removed, or because it was not coherent with the
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+repository state any more (e.g. because another borg instance changed the
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+repository).
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+
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+To optimize this rebuild process, borg caches per-archive information in the
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+``chunks.archive.d/`` directory. It won't help the first time it happens, but it
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+will make the subsequent rebuilds faster (because it needs to transfer less data
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+from the repository). While being faster, the cache needs quite some disk space,
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+which might be unwanted.
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+
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There is a temporary (but maybe long lived) hack to avoid using lots of disk
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space for chunks.archive.d (see :issue:`235` for details):
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TW