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init: Add --copy-chunker-params option

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This allows creating multiple repositories with identical chunker
parameters which is required for working deduplication when copying
snapshots between different repositories.
This commit is contained in:
Michael Eischer
2020-09-19 12:41:52 +02:00
parent 655430550b
commit f003410402
6 changed files with 114 additions and 9 deletions
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changelog/unreleased/issue-323
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@@ -9,5 +9,12 @@ and destination repository. Also, the transferred files are not re-chunked,
which may break deduplication between files already stored in the
destination repo and files copied there using this command.
To fully support deduplication between repositories when the copy command is
used, the init command now supports the `--copy-chunker-params` option,
which initializes the new repository with identical parameters for splitting
files into chunks as an already existing repository. This allows copied
snapshots to be equally deduplicated in both repositories.
https://github.com/restic/restic/issues/323
https://github.com/restic/restic/pull/2606
https://github.com/restic/restic/pull/2928