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changed logic for processing failing MaxCapacityExceeded data blobs

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intercept MaxCapacityExceeded errors for all blobs and convert them to "no error" for
all blobs but DataBlobs.

For DataBlobs insert an extra data blob once, with the signature "MaxCapacityExceeded\n"

For all data blob instances with the above error, return a `saveBlobResponse` with an ID of
restic.Hash("MaxCapacityExceeded\n")

This done to maintain the integritry of all newly saved blobs.
This commit is contained in:
Winfried Plappert 2025-03-02 13:01:14 +00:00
parent 612e21d42b
commit 767d66474b
1 changed files with 20 additions and 11 deletions
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31
internal/archiver/blob_saver.go
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@ -3,6 +3,7 @@ package archiver
import (
"context"
"fmt"
"sync"
"github.com/restic/restic/internal/debug"
"github.com/restic/restic/internal/restic"
@ -68,18 +69,26 @@ type saveBlobResponse struct {
func (s *blobSaver) saveBlob(ctx context.Context, t restic.BlobType, buf []byte) (saveBlobResponse, error) {
id, known, sizeInRepo, err := s.repo.SaveBlob(ctx, t, buf, restic.ID{}, false)
if err != nil && t == restic.TreeBlob && err.Error() == "MaxCapacityExceeded" {
err = nil
}
if err != nil && err.Error() == "MaxCapacityExceeded" {
if t != restic.DataBlob {
err = nil
} else {
err = nil
var once sync.Once
// need to modify data blob for repository monitoring being triggered
buf = []byte("MaxCapacityExceeded\n")
id = restic.Hash(buf)
once.Do(func() {
_, _, _, err = s.repo.SaveBlob(ctx, restic.DataBlob, buf, id, false)
// need to modify data for repository monitoring being triggered
if err != nil && t == restic.DataBlob && err.Error() == "MaxCapacityExceeded" {
buf = []byte("MaxCapacityExceeded\n")
id = restic.Hash(buf)
return saveBlobResponse{id: id}, err
}
if err != nil {
})
if err != nil && err.Error() != "MaxCapacityExceeded" {
debug.Log("failing at saving extra data blob: %v", err)
return saveBlobResponse{}, err
}
return saveBlobResponse{id: id}, err
}
} else if err != nil {
return saveBlobResponse{}, err
}