restic/changelog/unreleased/issue-4627

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Change: Redesign backend error handling to improve reliability
2024-05-01 14:28:57 +00:00
Restic now downloads pack files in large chunks instead of using a streaming
download. This prevents failures due to interrupted streams. The `restore`
command now also retries downloading individual blobs that cannot be retrieved.
2024-05-01 20:03:20 +00:00
HTTP requests that are stuck for more than two minutes while uploading or
downloading are now forcibly interrupted. This ensures that stuck requests are
retried after a short timeout.
Attempts to access a missing file or a truncated file will no longer be retried.
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This avoids unnecessary retries in those cases. All other backend requests are
retried for up to 15 minutes. This ensures that a temporarily interrupted network
connections can be tolerated.
If a download yields a corrupt file or blob, then the download will be retried once.
Most parts of the new backend error handling can temporarily be disabled by
setting the environment variable
`RESTIC_FEATURES=backend-error-redesign=false`. Note that this feature flag will
be removed in the next minor restic version.
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https://github.com/restic/restic/issues/4627
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https://github.com/restic/restic/issues/4193
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https://github.com/restic/restic/pull/4605
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https://github.com/restic/restic/pull/4792
https://github.com/restic/restic/issues/4515
https://github.com/restic/restic/issues/1523
https://github.com/restic/restic/pull/4520
https://github.com/restic/restic/pull/4800
2024-05-20 18:37:28 +00:00
https://github.com/restic/restic/pull/4784