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Generate CHANGELOG.md for 0.16.4

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# Table of Contents # Table of Contents
* [Changelog for 0.16.4](#changelog-for-restic-0164-2024-02-04)
* [Changelog for 0.16.3](#changelog-for-restic-0163-2024-01-14) * [Changelog for 0.16.3](#changelog-for-restic-0163-2024-01-14)
* [Changelog for 0.16.2](#changelog-for-restic-0162-2023-10-29) * [Changelog for 0.16.2](#changelog-for-restic-0162-2023-10-29)
* [Changelog for 0.16.1](#changelog-for-restic-0161-2023-10-24) * [Changelog for 0.16.1](#changelog-for-restic-0161-2023-10-24)
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* [Changelog for 0.6.0](#changelog-for-restic-060-2017-05-29) * [Changelog for 0.6.0](#changelog-for-restic-060-2017-05-29)
# Changelog for restic 0.16.4 (2024-02-04)
The following sections list the changes in restic 0.16.4 relevant to
restic users. The changes are ordered by importance.
## Summary
* Fix #4677: Downgrade zstd library to fix rare data corruption at max. compression
* Enh #4529: Add extra verification of data integrity before upload
## Details
* Bugfix #4677: Downgrade zstd library to fix rare data corruption at max. compression
In restic 0.16.3, backups where the compression level was set to `max` (using
`--compression max`) could in rare and very specific circumstances result in
data corruption due to a bug in the library used for compressing data. Restic
0.16.1 and 0.16.2 were not affected.
Restic now uses the previous version of the library used to compress data, the
same version used by restic 0.16.2. Please note that the `auto` compression
level (which restic uses by default) was never affected, and even if you used
`max` compression, chances of being affected by this issue are small.
To check a repository for any corruption, run `restic check --read-data`. This
will download and verify the whole repository and can be used at any time to
completely verify the integrity of a repository. If the `check` command detects
anomalies, follow the suggested steps.
https://github.com/restic/restic/issues/4677
https://github.com/restic/restic/pull/4679
* Enhancement #4529: Add extra verification of data integrity before upload
Hardware issues, or a bug in restic or its dependencies, could previously cause
corruption in the files restic created and stored in the repository. Detecting
such corruption previously required explicitly running the `check --read-data`
or `check --read-data-subset` commands.
To further ensure data integrity, even in the case of hardware issues or
software bugs, restic now performs additional verification of the files about to
be uploaded to the repository.
These extra checks will increase CPU usage during backups. They can therefore,
if absolutely necessary, be disabled using the `--no-extra-verify` global
option. Please note that this should be combined with more active checking using
the previously mentioned check commands.
https://github.com/restic/restic/issues/4529
https://github.com/restic/restic/pull/4681
# Changelog for restic 0.16.3 (2024-01-14) # Changelog for restic 0.16.3 (2024-01-14)
The following sections list the changes in restic 0.16.3 relevant to The following sections list the changes in restic 0.16.3 relevant to
restic users. The changes are ordered by importance. restic users. The changes are ordered by importance.