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Merge pull request #5047 from damoclark/patch-1

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cache: fix race condition in cache cleanup or similar.
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Michael Eischer 2024-09-14 16:14:48 +00:00 committed by GitHub
commit 4105e4a356
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7
changelog/unreleased/pull-5047 Normal file
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@ -0,0 +1,7 @@
Bugfix: Fix possible error on concurrent cache cleanup
Fix for multiple restic processes executing concurrently and racing to
remove obsolete snapshots from the local backend cache. Restic now suppresses the `no
such file or directory` error.
https://github.com/restic/restic/pull/5047

4
internal/backend/cache/file.go vendored
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@ -210,6 +210,10 @@ func (c *Cache) list(t restic.FileType) (restic.IDSet, error) {
dir := filepath.Join(c.path, cacheLayoutPaths[t]) dir := filepath.Join(c.path, cacheLayoutPaths[t])
err := filepath.Walk(dir, func(name string, fi os.FileInfo, err error) error { err := filepath.Walk(dir, func(name string, fi os.FileInfo, err error) error {
if err != nil { if err != nil {
// ignore ErrNotExist to gracefully handle multiple processes clearing the cache
if errors.Is(err, os.ErrNotExist) {
return nil
}
return errors.Wrap(err, "Walk") return errors.Wrap(err, "Walk")
} }