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Merge pull request #4679 from MichaelEischer/workaround-compression-bug

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Downgrade klauspost/compress to fix data corruption at max. compression
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Michael Eischer 2024-02-04 18:03:34 +00:00 committed by GitHub
commit effe76aaf5
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3 changed files with 23 additions and 2 deletions
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19
changelog/unreleased/issue-4677 Normal file
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@ -0,0 +1,19 @@
Bugfix: 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

2
go.mod
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@ -36,6 +36,8 @@ require (
google.golang.org/api v0.157.0
)
replace github.com/klauspost/compress => github.com/klauspost/compress v1.17.2
require (
cloud.google.com/go v0.112.0 // indirect
cloud.google.com/go/compute v1.23.3 // indirect

4
go.sum
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@ -117,8 +117,8 @@ github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2
github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
github.com/klauspost/compress v1.17.4 h1:Ej5ixsIri7BrIjBkRZLTo6ghwrEtHFk7ijlczPW4fZ4=
github.com/klauspost/compress v1.17.4/go.mod h1:/dCuZOvVtNoHsyb+cuJD3itjs3NbnF6KH9zAO4BDxPM=
github.com/klauspost/compress v1.17.2 h1:RlWWUY/Dr4fL8qk9YG7DTZ7PDgME2V4csBXA8L/ixi4=
github.com/klauspost/compress v1.17.2/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
github.com/klauspost/cpuid/v2 v2.0.1/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
github.com/klauspost/cpuid/v2 v2.2.6 h1:ndNyv040zDGIDh8thGkXYjnFtiN02M1PVVF+JE/48xc=
github.com/klauspost/cpuid/v2 v2.2.6/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=