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27 lines
1.4 KiB
Text
27 lines
1.4 KiB
Text
Enhancement: Improve cache handling for `restic check`
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For safety reasons, restic does not use a local metadata cache for the `restic
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check` command, so that data is loaded from the repository and restic can check
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it's in good condition. When the cache is disabled, restic will fetch each tiny
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blob needed for checking the integrity using a separate backend request. For
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non-local backends, that will take a long time, and depending on the backend
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(e.g. B2) may also be much more expensive.
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This PR adds a few commits which will change the behavior as follows:
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* When `restic check` is called without any additional parameters, it will
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build a new cache in a temporary directory, which is removed at the end of
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the check. This way, we'll get readahead for metadata files (so restic will
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fetch the whole file when the first blob from the file is requested), but
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all data is freshly fetched from the storage backend. This is the default
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behavior and will work for almost all users.
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* When `restic check` is called with `--with-cache`, the default on-disc cache
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is used. This behavior hasn't changed since the cache was introduced.
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* When `--no-cache` is specified, restic falls back to the old behavior, and
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read all tiny blobs in separate requests.
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https://github.com/restic/restic/issues/1665
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https://github.com/restic/restic/issues/1694
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https://github.com/restic/restic/pull/1696
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