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cache: ignore ErrNotExist during cleanup of old files#4761

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MichaelEischer merged 1 commit intorestic:masterfrom
MichaelEischer:fix-cache-race
Apr 22, 2024
Merged

cache: ignore ErrNotExist during cleanup of old files#4761
MichaelEischer merged 1 commit intorestic:masterfrom
MichaelEischer:fix-cache-race

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@MichaelEischer MichaelEischer commented Apr 10, 2024

What does this PR change? What problem does it solve?

Two restic processes running concurrently can try to remove the same files from the cache. This could cause one process to fail with an error if the other one has already remove a file that the current process also tries to delete.

See #4760

Was the change previously discussed in an issue or on the forum?

Fixes #4760

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  • I have read the contribution guidelines.
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  • I have added tests for all code changes.
  • [ ] I have added documentation for relevant changes (in the manual).
  • There's a new file in changelog/unreleased/ that describes the changes for our users (see template).
  • I have run gofmt on the code in all commits.
  • All commit messages are formatted in the same style as the other commits in the repo.
  • I'm done! This pull request is ready for review.

Two restic processes running concurrently can try to remove the same
files from the cache. This could cause one process to fail with an error
if the other one has already remove a file that the current process also
tries to delete.
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LGTM.

@MichaelEischer MichaelEischer merged commit 2e6c43c into restic:master Apr 22, 2024
@MichaelEischer MichaelEischer deleted the fix-cache-race branch April 22, 2024 19:46
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Successfully merging this pull request may close these issues.

Race condition in Clear() function in file restic/internal/cache/file.go

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