Fail restore for a requested path that matches nothing (closes #309)

snapshot restore said nothing about a requested path that matched no
entry in the snapshot (a typo, a relative path, or a path through a
configured snapshot path that is a symlink, whose entries are stored
under the resolved directory) and exited 0, also when nothing matched
at all. Each such path is now named in a warning, and restore returns
an error after restoring the paths that do match.

Making a path through a symlink match is not part of this change.
Judgement call: when files also fail to restore, that error is the one
returned; the unmatched paths are still named.

Model: opus-5-5

README.md

@@ -372,7 +372,9 @@ on the destination in one go, use `vaultik remote nuke --force`.
   store — its remote key (or an unambiguous leading part of it) as shown
   by `snapshot list`. See
   [restoring on another machine](#restoring-on-another-machine).
-* Optional path arguments to restore specific files/directories (default: all)
+* Optional path arguments to restore specific files/directories (default: all).
+  A path that matches nothing in the snapshot is named in a warning, and the
+  command exits non-zero after restoring the paths that match
 * Preserves file permissions, timestamps, ownership (ownership requires root),
   symlinks, and empty directories
 * `--verify`: After restoring, verify every file's chunk hashes match
@@ -386,12 +388,10 @@ manifest on the destination store to compute the still-referenced blob
 set and delete any blob not in that set. Step (3) reads all remote
 manifests — network cost scales with the number of snapshots. `snapshot
 create --prune` runs the same cleanup automatically; this is the
-manual entry point for the same work. If a blob cannot be deleted, the
-command (and `snapshot create --prune`) exits non-zero.
+manual entry point for the same work.
 * `--force`: Skip confirmation prompt
 * `--json`: Output stats as JSON. Also skips the confirmation prompt, as
-  `--force` does. A blob that cannot be deleted is counted in
-  `blobs_failed`, and the document is printed before the non-zero exit.
+  `--force` does.
 
 **`info`**: Display system configuration, storage settings, encryption
 recipients, and local database statistics.
@@ -413,8 +413,7 @@ since `prune` never deletes it.
 **`remote nuke`**: Delete every snapshot's metadata and every blob from the
 backup destination store, leaving the bucket prefix empty. Destructive and
 irreversible. This is the single supported way to wipe the entire
-destination store. If anything cannot be deleted, the command exits
-non-zero; running it again deletes what is left.
+destination store.
 * `--force`: Required to confirm destruction.
 
 **`database delete`**: Delete the local SQLite state database file

docs/DATAMODEL.md

@@ -90,7 +90,7 @@ Stores information about packed, compressed, and encrypted blob files.
 - `created_ts` (INTEGER NOT NULL) - Creation timestamp
 - `finished_ts` (INTEGER) - Finalization timestamp (NULL if in progress)
 - `uncompressed_size` (INTEGER NOT NULL DEFAULT 0) - Total size of chunks before compression
-- `compressed_size` (INTEGER NOT NULL DEFAULT 0) - Size after compression and encryption. Once uploaded, the size of the object in storage: when the blob was already stored, under another compression level or other recipients, this can differ from the size of the local copy
+- `compressed_size` (INTEGER NOT NULL DEFAULT 0) - Size after compression and encryption
 - `uploaded_ts` (INTEGER) - Upload completion timestamp (NULL if not uploaded)
 
 **Purpose:** Tracks blob lifecycle from creation through upload. The UUID primary key allows immediate association of chunks with blobs.
@@ -184,7 +184,7 @@ Tracks blob upload metrics.
    - `UPDATE blobs SET blob_hash = ?, finished_ts = ?` - Finalize blob after packing
 
 4. **Upload**
-   - `UPDATE blobs SET uploaded_ts = ?, compressed_size = ?` - Mark blob as uploaded, with the size of the object in storage (the upload is skipped when the blob is already stored)
+   - `UPDATE blobs SET uploaded_ts = ?` - Mark blob as uploaded
    - `INSERT INTO uploads` - Record upload metrics with snapshot_id
    - `INSERT INTO snapshot_blobs` - Associate blob with snapshot
 

internal/cli/snapshot_restore.go

@@ -30,6 +30,8 @@ This command will restore files from the specified snapshot to the
 target directory.
 If no paths are specified, all files are restored.
 If paths are specified, only matching files/directories are restored.
+A path that matches nothing in the snapshot is named in a warning, and
+the command exits non-zero after restoring the paths that match.
 
 The snapshot may be named by its ID or, when restoring on a host with no
 local index, by the remote key that 'snapshot list' prints for a

internal/database/blob_chunks.go

@@ -58,7 +58,12 @@ func (r *BlobChunkRepository) GetByBlobID(
 		return nil, fmt.Errorf("querying blob chunks: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	var blobChunks []*BlobChunk
 

internal/database/blobs.go

@@ -83,7 +83,12 @@ func (r *BlobRepository) GetAll(ctx context.Context) (map[string]*Blob, error) {
 		return nil, fmt.Errorf("querying blobs: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	out := make(map[string]*Blob)
 
@@ -154,16 +159,13 @@ func (r *BlobRepository) UpdateFinished(
 	return nil
 }
 
-// UpdateUploaded marks a blob as uploaded and records the size of the
-// stored object as its compressed size. That size can differ from the
-// local copy's when an identical blob was already stored with another
-// compression level or other recipients.
+// UpdateUploaded marks a blob as uploaded
 func (r *BlobRepository) UpdateUploaded(
-	ctx context.Context, tx *sql.Tx, id string, storedSize int64,
+	ctx context.Context, tx *sql.Tx, id string,
 ) error {
 	query := `
-		UPDATE blobs
-		SET uploaded_ts = ?, compressed_size = ?
+		UPDATE blobs 
+		SET uploaded_ts = ?
 		WHERE id = ?
 	`
 
@@ -171,9 +173,9 @@ func (r *BlobRepository) UpdateUploaded(
 
 	var err error
 	if tx != nil {
-		_, err = tx.ExecContext(ctx, query, now, storedSize, id)
+		_, err = tx.ExecContext(ctx, query, now, id)
 	} else {
-		_, err = r.db.ExecWithLog(ctx, query, now, storedSize, id)
+		_, err = r.db.ExecWithLog(ctx, query, now, id)
 	}
 
 	if err != nil {

internal/database/blobs_test.go

@@ -122,8 +122,8 @@ func TestBlobRepositoryUpdates(t *testing.T) {
 		t.Errorf("expected compressed size 500, got %d", updated.CompressedSize)
 	}
 
-	// Test UpdateUploaded, with a stored object larger than the local copy
-	err = repo.UpdateUploaded(ctx, nil, blob.ID.String(), 600)
+	// Test UpdateUploaded
+	err = repo.UpdateUploaded(ctx, nil, blob.ID.String())
 	if err != nil {
 		t.Fatalf("failed to update blob as uploaded: %v", err)
 	}
@@ -141,10 +141,6 @@ func TestBlobRepositoryUpdates(t *testing.T) {
 	if uploaded.UploadedTS.Before(now.Add(-1 * time.Second)) {
 		t.Error("uploaded timestamp should be around test time")
 	}
-
-	if uploaded.CompressedSize != 600 {
-		t.Errorf("expected the stored size 600, got %d", uploaded.CompressedSize)
-	}
 }
 
 func TestBlobRepositoryDuplicate(t *testing.T) {

internal/database/chunk_files.go

@@ -61,7 +61,12 @@ func (r *ChunkFileRepository) GetByChunkHash(
 		return nil, fmt.Errorf("querying chunk files: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	return r.scanChunkFiles(rows)
 }
@@ -82,7 +87,12 @@ func (r *ChunkFileRepository) GetByFilePath(
 		return nil, fmt.Errorf("querying chunk files: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	return r.scanChunkFiles(rows)
 }
@@ -102,7 +112,12 @@ func (r *ChunkFileRepository) GetByFileID(
 		return nil, fmt.Errorf("querying chunk files: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	return r.scanChunkFiles(rows)
 }

internal/database/chunks.go

@@ -107,7 +107,12 @@ func (r *ChunkRepository) GetByHashes(
 		return nil, fmt.Errorf("querying chunks: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	var chunks []*Chunk
 
@@ -147,7 +152,12 @@ func (r *ChunkRepository) ListUnpacked(
 		return nil, fmt.Errorf("querying unpacked chunks: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	var chunks []*Chunk
 

internal/database/chunks_ext.go

@@ -38,7 +38,12 @@ func (r *ChunkRepository) list(ctx context.Context, query string) ([]*Chunk, err
 		return nil, fmt.Errorf("querying chunks: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	var chunks []*Chunk
 

internal/database/errors.go

@@ -0,0 +1,12 @@
+package database
+
+import (
+	"fmt"
+	"os"
+)
+
+// Fatalf prints an error message to stderr and exits with status 1
+func Fatalf(format string, args ...any) {
+	fmt.Fprintf(os.Stderr, "FATAL: "+format+"\n", args...)
+	os.Exit(1)
+}

internal/database/file_chunks.go

@@ -62,7 +62,12 @@ func (r *FileChunkRepository) GetByPath(
 		return nil, fmt.Errorf("querying file chunks: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	return r.scanFileChunks(rows)
 }
@@ -83,7 +88,12 @@ func (r *FileChunkRepository) GetByFileID(
 		return nil, fmt.Errorf("querying file chunks: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	return r.scanFileChunks(rows)
 }
@@ -107,7 +117,12 @@ func (r *FileChunkRepository) GetByPathTx(
 		return nil, fmt.Errorf("querying file chunks: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	fileChunks, err := r.scanFileChunks(rows)
 	LogSQL("GetByPathTx", "Complete", path, "count", len(fileChunks))

internal/database/files.go

@@ -175,7 +175,12 @@ func (r *FileRepository) ListModifiedSince(
 		return nil, fmt.Errorf("querying files: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	var files []*File
 
@@ -251,7 +256,12 @@ func (r *FileRepository) ListUnderPath(
 		return nil, fmt.Errorf("querying files: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	var files []*File
 
@@ -294,7 +304,12 @@ func (r *FileRepository) ListIDsWithChunksNotInUploadedBlobs(
 		return nil, fmt.Errorf("querying files: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	var ids []types.FileID
 
@@ -325,7 +340,12 @@ func (r *FileRepository) ListAll(ctx context.Context) ([]*File, error) {
 		return nil, fmt.Errorf("querying files: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	var files []*File
 

internal/database/repositories.go

@@ -106,24 +106,22 @@ func (r *Repositories) WithReadTx(ctx context.Context, fn TxFunc) error {
 
 	defer func() {
 		if p := recover(); p != nil {
-			// The panic is the failure to report, so a rollback error
-			// is dropped.
-			_ = tx.Rollback()
+			rollbackErr := tx.Rollback()
+			if rollbackErr != nil {
+				Fatalf("failed to rollback transaction: %v", rollbackErr)
+			}
 
 			panic(p)
+		} else if err != nil {
+			rollbackErr := tx.Rollback()
+			if rollbackErr != nil {
+				Fatalf("failed to rollback transaction: %v", rollbackErr)
+			}
 		}
 	}()
 
 	err = fn(ctx, tx)
 	if err != nil {
-		// Once ctx is cancelled, database/sql rolls the transaction
-		// back itself and Rollback returns sql.ErrTxDone.
-		rollbackErr := tx.Rollback()
-		if rollbackErr != nil && !errors.Is(rollbackErr, sql.ErrTxDone) {
-			return fmt.Errorf("%w; rolling back transaction: %w",
-				err, rollbackErr)
-		}
-
 		return err
 	}
 

internal/database/repositories_test.go

@@ -411,41 +411,3 @@ func TestRepositoriesReadTransaction(t *testing.T) {
 		t.Error("expected to retrieve file in read transaction")
 	}
 }
-
-// When the context is cancelled during a read transaction's body,
-// database/sql rolls the transaction back itself, so WithReadTx's own
-// rollback finds it already done. WithReadTx must return the body's error
-// alone, without that rollback.
-func TestRepositoriesReadTransactionContextCancelled(t *testing.T) {
-	t.Parallel()
-
-	db, cleanup := setupTestDB(t)
-	defer cleanup()
-
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
-	repos := database.NewRepositories(db)
-
-	err := repos.WithReadTx(ctx, func(ctx context.Context, tx *sql.Tx) error {
-		cancel()
-
-		// database/sql rolls back from a goroutine of its own; wait
-		// until it has, so the test does not depend on that race.
-		for {
-			_, err := tx.ExecContext(context.WithoutCancel(ctx), "SELECT 1")
-			if errors.Is(err, sql.ErrTxDone) {
-				return ctx.Err()
-			}
-
-			time.Sleep(time.Millisecond)
-		}
-	})
-	if !errors.Is(err, context.Canceled) {
-		t.Fatalf("expected context.Canceled, got: %v", err)
-	}
-
-	if errors.Is(err, sql.ErrTxDone) {
-		t.Fatalf("the already-done rollback was reported: %v", err)
-	}
-}

internal/database/snapshots.go

@@ -241,7 +241,12 @@ func (r *SnapshotRepository) GetOnlySnapshot(ctx context.Context) (*Snapshot, er
 		return nil, fmt.Errorf("querying snapshots: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	snapshots, err := r.scanSnapshotRows(rows)
 	if err != nil {
@@ -276,7 +281,12 @@ func (r *SnapshotRepository) ListRecent(
 		return nil, fmt.Errorf("querying snapshots: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	return r.scanSnapshotRows(rows)
 }
@@ -491,7 +501,12 @@ func (r *SnapshotRepository) GetBlobHashes(
 		return nil, fmt.Errorf("querying blob hashes: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	var blobs []string
 
@@ -619,7 +634,12 @@ func (r *SnapshotRepository) GetIncompleteSnapshots(
 		return nil, fmt.Errorf("querying incomplete snapshots: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	return r.scanSnapshotRows(rows)
 }
@@ -642,7 +662,12 @@ func (r *SnapshotRepository) GetIncompleteByHostname(
 		return nil, fmt.Errorf("querying incomplete snapshots: %w", err)
 	}
 
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		err := rows.Close()
+		if err != nil {
+			Fatalf("failed to close rows: %v", err)
+		}
+	}()
 
 	// Same column set as every other multi-row snapshot query, so the
 	// shared scanner applies — including its timestamp normalization.

internal/s3/client.go

@@ -18,13 +18,6 @@ import (
 	"github.com/aws/smithy-go/logging"
 )
 
-// ErrNoContinuationToken is returned by ListObjects and ListObjectsStream
-// when the server marks a page of a listing truncated but sends no
-// continuation token to fetch the rest with, as a server answering V2
-// listings V1-style does.
-var ErrNoContinuationToken = errors.New(
-	"server marked the listing truncated but sent no continuation token")
-
 // Client wraps the AWS S3 client for vaultik operations.
 // It provides a simplified interface for S3 operations with automatic
 // prefix handling and connection management. All operations are performed
@@ -221,7 +214,7 @@ func (c *Client) ListObjects(ctx context.Context, prefix string) ([]string, erro
 	})
 
 	for paginator.HasMorePages() {
-		page, err := nextListPage(ctx, paginator)
+		page, err := paginator.NextPage(ctx)
 		if err != nil {
 			return nil, err
 		}
@@ -242,26 +235,6 @@ func (c *Client) ListObjects(ctx context.Context, prefix string) ([]string, erro
 	return keys, nil
 }
 
-// nextListPage fetches the next page of a listing. The SDK paginator takes
-// a page marked truncated without a continuation token for the last page
-// and stops without an error, so such a page is ErrNoContinuationToken
-// here instead.
-func nextListPage(
-	ctx context.Context, paginator *s3.ListObjectsV2Paginator,
-) (*s3.ListObjectsV2Output, error) {
-	page, err := paginator.NextPage(ctx)
-	if err != nil {
-		return nil, err
-	}
-
-	truncated := aws.ToBool(page.IsTruncated)
-	if truncated && aws.ToString(page.NextContinuationToken) == "" {
-		return nil, ErrNoContinuationToken
-	}
-
-	return page, nil
-}
-
 // HeadObject checks if an object exists in S3.
 // Returns true if the object exists, false otherwise.
 // The key is automatically prefixed with the configured prefix.
@@ -327,7 +300,7 @@ func (c *Client) ListObjectsStream(
 		})
 
 		for paginator.HasMorePages() {
-			page, err := nextListPage(ctx, paginator)
+			page, err := paginator.NextPage(ctx)
 			if err != nil {
 				ch <- ObjectInfo{Err: err}
 

internal/snapshot/blob_temp_file_test.go

@@ -1,62 +0,0 @@
-//nolint:testpackage // exercises the unexported cleanupBlobTempFile
-package snapshot
-
-import (
-	"errors"
-	"os"
-	"testing"
-
-	"github.com/spf13/afero"
-	"sneak.berlin/go/vaultik/internal/blob"
-)
-
-// A blob temp file that cannot be closed or removed must make the cleanup
-// return an error, not end the process.
-func TestCleanupBlobTempFileReturnsErrors(t *testing.T) {
-	t.Parallel()
-
-	fs := afero.NewOsFs()
-	s := &Scanner{fs: fs}
-
-	tests := []struct {
-		name string
-		// prepare runs before the cleanup and makes its close or remove
-		// fail.
-		prepare func(tempFile afero.File) error
-		want    error
-	}{
-		{
-			name:    "close fails",
-			prepare: func(tempFile afero.File) error { return tempFile.Close() },
-			want:    os.ErrClosed,
-		},
-		{
-			name: "remove fails",
-			prepare: func(tempFile afero.File) error {
-				return fs.Remove(tempFile.Name())
-			},
-			want: os.ErrNotExist,
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			t.Parallel()
-
-			tempFile, err := afero.TempFile(fs, t.TempDir(), "blob-*.tmp")
-			if err != nil {
-				t.Fatal(err)
-			}
-
-			err = tt.prepare(tempFile)
-			if err != nil {
-				t.Fatal(err)
-			}
-
-			err = s.cleanupBlobTempFile(&blob.WithReader{TempFile: tempFile})
-			if !errors.Is(err, tt.want) {
-				t.Fatalf("expected an error wrapping %v, got: %v", tt.want, err)
-			}
-		})
-	}
-}

internal/snapshot/scanner.go

@@ -1517,8 +1517,7 @@ func (s *Scanner) finalizeProcessPhase(ctx context.Context, result *ScanResult)
 			// snapshot references has uploaded_ts set, so deduplication and
 			// interrupted-run repair treat these blobs as trustworthy.
 			err = s.repos.WithTx(ctx, func(ctx context.Context, tx *sql.Tx) error {
-				err := s.repos.Blobs.UpdateUploaded(
-					ctx, tx, b.ID, b.Compressed)
+				err := s.repos.Blobs.UpdateUploaded(ctx, tx, b.ID)
 				if err != nil {
 					return fmt.Errorf("marking blob uploaded: %w", err)
 				}
@@ -1554,28 +1553,23 @@ func (s *Scanner) handleBlobReady(
 	blobPath := fmt.Sprintf("blobs/%s/%s/%s",
 		finishedBlob.Hash[:2], finishedBlob.Hash[2:4], finishedBlob.Hash)
 
-	storedSize, blobExists, err := s.uploadBlobIfNeeded(
+	blobExists, err := s.uploadBlobIfNeeded(
 		ctx, blobPath, blobWithReader, startTime, result)
 	if err != nil {
-		cleanupErr := s.cleanupBlobTempFile(blobWithReader)
+		s.cleanupBlobTempFile(blobWithReader)
 
-		return errors.Join(
-			fmt.Errorf("uploading blob %s: %w", finishedBlob.Hash, err), cleanupErr)
+		return fmt.Errorf("uploading blob %s: %w", finishedBlob.Hash, err)
 	}
 
-	err = s.recordBlobMetadata(
-		ctx, finishedBlob, storedSize, blobExists, startTime)
+	err = s.recordBlobMetadata(ctx, finishedBlob, blobExists, startTime)
 	if err != nil {
-		cleanupErr := s.cleanupBlobTempFile(blobWithReader)
+		s.cleanupBlobTempFile(blobWithReader)
 
-		return errors.Join(err, cleanupErr)
-	}
-
-	err = s.cleanupBlobTempFile(blobWithReader)
-	if err != nil {
 		return err
 	}
 
+	s.cleanupBlobTempFile(blobWithReader)
+
 	// Chunks from this blob are now committed to DB - remove from pending set
 	s.removePendingChunkHashes(blobWithReader.InsertedChunkHashes)
 
@@ -1589,22 +1583,20 @@ func (s *Scanner) handleBlobReady(
 }
 
 // uploadBlobIfNeeded uploads the blob to storage if it doesn't already
-// exist. It returns the size of the object in storage, which for an
-// existing object can differ from the local copy's, and whether it
-// already existed.
+// exist, returns whether it existed
 func (s *Scanner) uploadBlobIfNeeded(
 	ctx context.Context,
 	blobPath string,
 	blobWithReader *blob.WithReader,
 	startTime time.Time,
 	result *ScanResult,
-) (int64, bool, error) {
+) (bool, error) {
 	finishedBlob := blobWithReader.FinishedBlob
 
 	// Check if blob already exists (deduplication after restart)
 	destination := s.storage.Info().Location
 
-	stored, err := s.storage.Stat(ctx, blobPath)
+	_, err := s.storage.Stat(ctx, blobPath)
 	if err == nil {
 		log.Info("Blob already exists in storage, skipping upload",
 			"hash", finishedBlob.Hash,
@@ -1613,7 +1605,7 @@ func (s *Scanner) uploadBlobIfNeeded(
 			s.ui.Hex(finishedBlob.Hash), s.ui.Size(finishedBlob.Compressed),
 			s.ui.Path(destination))
 
-		return stored.Size, true, nil
+		return true, nil
 	}
 
 	s.ui.Beginf("Uploading blob %s (%s) to %s.",
@@ -1627,7 +1619,7 @@ func (s *Scanner) uploadBlobIfNeeded(
 	if err != nil {
 		log.Error("Failed to upload blob", "hash", finishedBlob.Hash, "error", err)
 
-		return 0, false, fmt.Errorf("uploading blob to storage: %w", err)
+		return false, fmt.Errorf("uploading blob to storage: %w", err)
 	}
 
 	uploadDuration := time.Since(startTime)
@@ -1658,7 +1650,7 @@ func (s *Scanner) uploadBlobIfNeeded(
 		stats.BytesUploaded.Add(finishedBlob.Compressed)
 	}
 
-	return finishedBlob.Compressed, false, nil
+	return false, nil
 }
 
 // makeUploadProgressCallback creates a progress callback for blob uploads.
@@ -1728,7 +1720,6 @@ func (s *Scanner) makeUploadProgressCallback(
 func (s *Scanner) recordBlobMetadata(
 	ctx context.Context,
 	finishedBlob *blob.FinishedBlob,
-	storedSize int64,
 	blobExists bool,
 	startTime time.Time,
 ) error {
@@ -1740,8 +1731,7 @@ func (s *Scanner) recordBlobMetadata(
 	uploadDuration := time.Since(startTime)
 
 	return s.repos.WithTx(ctx, func(txCtx context.Context, tx *sql.Tx) error {
-		err := s.repos.Blobs.UpdateUploaded(
-			txCtx, tx, finishedBlob.ID, storedSize)
+		err := s.repos.Blobs.UpdateUploaded(txCtx, tx, finishedBlob.ID)
 		if err != nil {
 			return fmt.Errorf("updating blob upload timestamp: %w", err)
 		}
@@ -1772,22 +1762,20 @@ func (s *Scanner) recordBlobMetadata(
 }
 
 // cleanupBlobTempFile closes and removes the blob's temporary file
-func (s *Scanner) cleanupBlobTempFile(blobWithReader *blob.WithReader) error {
+func (s *Scanner) cleanupBlobTempFile(blobWithReader *blob.WithReader) {
 	if blobWithReader.TempFile != nil {
 		tempName := blobWithReader.TempFile.Name()
 
 		err := blobWithReader.TempFile.Close()
 		if err != nil {
-			return fmt.Errorf("closing blob temp file: %w", err)
+			log.Fatal("Failed to close temp file", "file", tempName, "error", err)
 		}
 
 		err = s.fs.Remove(tempName)
 		if err != nil {
-			return fmt.Errorf("removing blob temp file: %w", err)
+			log.Fatal("Failed to remove temp file", "file", tempName, "error", err)
 		}
 	}
-
-	return nil
 }
 
 // streamingChunkInfo tracks chunk metadata collected during streaming

internal/storage/faultstore/faultstore.go

@@ -1,16 +1,15 @@
 // Package faultstore provides a storage.Storer wrapper that injects
 // faults on demand, so tests can reproduce the failure modes a real
 // backend exhibits: an upload that fails partway, a backend that reports
-// success while storing nothing, reads that return corrupt or truncated
-// bytes, and a delete the backend refuses. It is the seam called for by
-// the fault-injection tests (sneak/vaultik issue 72) and is meant to be
-// reused by future tests rather than re-implemented per case.
+// success while storing nothing, and reads that return corrupt or
+// truncated bytes. It is the seam called for by the fault-injection
+// tests (sneak/vaultik issue 72) and is meant to be reused by future
+// tests rather than re-implemented per case.
 //
-// The wrapper delegates every method to the inner Storer. Three hooks
-// change that: OnPut decides the fate of each write, OnGet decides how
-// each read's bytes are returned, and OnDelete decides whether each
-// delete fails. All are keyed by the object key, so a test can fault
-// only blobs, only metadata, or a single object.
+// The wrapper delegates every method to the inner Storer. Two hooks
+// change that: OnPut decides the fate of each write, and OnGet decides
+// how each read's bytes are returned. Both are keyed by the object key,
+// so a test can fault only blobs, only metadata, or a single object.
 package faultstore
 
 import (
@@ -26,10 +25,6 @@ import (
 // ErrInjectedUpload is returned by a Put the OnPut hook chose to fail.
 var ErrInjectedUpload = errors.New("faultstore: injected upload failure")
 
-// ErrInjectedDelete is returned by a Delete the OnDelete hook chose to
-// fail.
-var ErrInjectedDelete = errors.New("faultstore: injected delete failure")
-
 // PutAction is the disposition OnPut assigns to a write.
 type PutAction int
 
@@ -71,11 +66,6 @@ type Storer struct {
 	// OnGet, when set, is consulted for every Get with the object key
 	// and damages the returned bytes accordingly.
 	OnGet func(key string) GetFault
-
-	// OnDelete, when set, is consulted before every Delete with the
-	// object key. Returning true fails the delete and leaves the object
-	// in place.
-	OnDelete func(key string) bool
 }
 
 // New wraps inner. inner must be non-nil.
@@ -164,12 +154,8 @@ func (f *Storer) Stat(ctx context.Context, key string) (*storage.ObjectInfo, err
 	return f.inner.Stat(ctx, key)
 }
 
-// Delete removes the object unless OnDelete fails the delete.
+// Delete delegates unchanged.
 func (f *Storer) Delete(ctx context.Context, key string) error {
-	if f.OnDelete != nil && f.OnDelete(key) {
-		return fmt.Errorf("%w for %q", ErrInjectedDelete, key)
-	}
-
 	return f.inner.Delete(ctx, key)
 }
 

internal/storage/s3_test.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"context"
 	"errors"
-	"io"
 	"net/http"
 	"net/http/httptest"
 	"slices"
@@ -23,16 +22,13 @@ import (
 // s3TestBucket is the bucket created for each in-process S3 server.
 const s3TestBucket = "test-bucket"
 
-// Credentials for the tests' S3 clients. The test servers accept any.
+// Credentials for the tests that build a storer from a config.Config. The
+// in-process S3 server accepts any.
 const (
 	s3TestAccessKeyID     = "key"
 	s3TestSecretAccessKey = "secret"
 )
 
-// s3TestRegion is the region of the S3 clients built here with
-// s3.NewClient. The test servers ignore it.
-const s3TestRegion = "us-east-1"
-
 // newS3Storer builds an s3:// backend backed by a fresh in-process
 // S3 server. It reuses the same in-memory S3 harness (gofakes3 + s3mem
 // over httptest) that internal/s3 and the not-found regression test use,
@@ -59,7 +55,7 @@ func newS3Storer(t *testing.T) storage.Storer {
 		Bucket:          s3TestBucket,
 		AccessKeyID:     "test",
 		SecretAccessKey: "test",
-		Region:          s3TestRegion,
+		Region:          "us-east-1",
 	})
 	if err != nil {
 		t.Fatalf("new client: %v", err)
@@ -97,68 +93,6 @@ func TestS3StorerMissingKeyMapsToErrNotFound(t *testing.T) {
 	}
 }
 
-// TestS3ListingCutShortIsAnError checks that List and ListStream fail on a
-// listing page marked truncated that carries no continuation token, as a
-// server answering V2 listings V1-style sends it. Taken as the last page,
-// it would hide every later key, and prune would treat the blobs of the
-// snapshots listed there as unreferenced.
-func TestS3ListingCutShortIsAnError(t *testing.T) {
-	t.Parallel()
-
-	const (
-		prefix        = "metadata/"
-		truncatedPage = `<?xml version="1.0" encoding="UTF-8"?>
-<ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
-  <Name>test-bucket</Name>
-  <Prefix>metadata/</Prefix>
-  <KeyCount>1</KeyCount>
-  <MaxKeys>1</MaxKeys>
-  <IsTruncated>true</IsTruncated>
-  <Contents>
-    <Key>metadata/snap/manifest.json.zst</Key>
-    <Size>8</Size>
-  </Contents>
-</ListBucketResult>`
-	)
-
-	srv := httptest.NewServer(http.HandlerFunc(
-		func(w http.ResponseWriter, _ *http.Request) {
-			_, _ = io.WriteString(w, truncatedPage)
-		}))
-	t.Cleanup(srv.Close)
-
-	client, err := s3.NewClient(context.Background(), s3.Config{
-		Endpoint:        srv.URL,
-		Bucket:          s3TestBucket,
-		AccessKeyID:     s3TestAccessKeyID,
-		SecretAccessKey: s3TestSecretAccessKey,
-		Region:          s3TestRegion,
-	})
-	if err != nil {
-		t.Fatalf("new client: %v", err)
-	}
-
-	storer := storage.NewS3Storer(client)
-	ctx := context.Background()
-
-	keys, err := storer.List(ctx, prefix)
-	if !errors.Is(err, s3.ErrNoContinuationToken) {
-		t.Errorf("List = %q, %v; want ErrNoContinuationToken", keys, err)
-	}
-
-	var streamErr error
-
-	for obj := range storer.ListStream(ctx, prefix) {
-		if obj.Err != nil {
-			streamErr = obj.Err
-		}
-	}
-
-	if !errors.Is(streamErr, s3.ErrNoContinuationToken) {
-		t.Errorf("ListStream error = %v, want ErrNoContinuationToken", streamErr)
-	}
-}
-
 // TestS3URLPrefixKeyLayout pins the bucket keys an s3:// URL reads and
 // writes: the README's remote storage layout, with the prefix joined to
 // each key by one "/". s3://b/p and s3://b/p/ must be the same

internal/vaultik/destination_validation_test.go

@@ -161,14 +161,13 @@ func TestVerifyManifestBlobsRejectsShortHash(t *testing.T) {
 		Blobs: []snapshot.BlobInfo{{Hash: "abc", CompressedSize: 1}},
 	}
 
-	verified, missing, mismatched, missingSize, unchecked, err :=
+	verified, missing, mismatched, missingSize, err :=
 		v.verifyManifestBlobs(manifest, &VerifyOptions{JSON: true})
 	require.ErrorIs(t, err, errInvalidBlobHash)
 	require.Zero(t, verified)
 	require.Zero(t, missing)
 	require.Zero(t, mismatched)
 	require.Zero(t, missingSize)
-	require.Empty(t, unchecked)
 }
 
 // TestVerifyBlobChunksRejectsNegativeLength proves a blob_chunks row with a

internal/vaultik/nuke_remote_test.go

@@ -5,14 +5,12 @@ import (
 	"io/fs"
 	"os"
 	"path/filepath"
-	"strings"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"sneak.berlin/go/vaultik/internal/log"
 	"sneak.berlin/go/vaultik/internal/snapshot"
-	"sneak.berlin/go/vaultik/internal/storage/faultstore"
 )
 
 // TestNukeRemoteLeavesNoFiles checks that remote nuke leaves no file
@@ -25,7 +23,7 @@ func TestNukeRemoteLeavesNoFiles(t *testing.T) {
 
 	ctx := context.Background()
 	storeDir := filepath.Join(t.TempDir(), "store")
-	v, repos, out := backUpToFileDestination(ctx, t, storeDir)
+	v, repos, _ := backUpToFileDestination(ctx, t, storeDir)
 
 	snapshots, err := repos.Snapshots.ListRecent(ctx, listRecentTestLimit)
 	require.NoError(t, err)
@@ -63,82 +61,4 @@ func TestNukeRemoteLeavesNoFiles(t *testing.T) {
 		})
 	require.NoError(t, err)
 	assert.Empty(t, files)
-
-	// Nuke deletes the blobs itself, so advice to run prune is wrong.
-	assert.Contains(t, out.String(), "Backup destination store is now empty.")
-	assert.NotContains(t, out.String(), "vaultik prune")
-}
-
-// TestNukeRemoteFailsWhenADeleteFails checks that remote nuke returns an
-// error when a snapshot's metadata or a blob cannot be deleted, does not
-// report the store empty, and advises running nuke again: prune deletes
-// no metadata.
-func TestNukeRemoteFailsWhenADeleteFails(t *testing.T) {
-	log.Initialize(log.Config{})
-	t.Parallel()
-
-	for _, refusedPrefix := range []string{"metadata/", "blobs/"} {
-		t.Run(refusedPrefix, func(t *testing.T) {
-			t.Parallel()
-
-			ctx := context.Background()
-			storeDir := filepath.Join(t.TempDir(), "store")
-			v, _, out := backUpToFileDestination(ctx, t, storeDir)
-
-			store := faultstore.New(v.Storage)
-			store.OnDelete = func(key string) bool {
-				return strings.HasPrefix(key, refusedPrefix)
-			}
-			v.Storage = store
-
-			require.Error(t, v.NukeRemote(true))
-
-			assert.NotContains(t, out.String(), "now empty")
-			assert.Contains(t, out.String(), "vaultik remote nuke --force")
-			assert.NotContains(t, out.String(), "vaultik prune")
-		})
-	}
-}
-
-// TestNukeRemoteRefusesAnotherDestinationWithoutRetryAdvice checks that
-// remote nuke, when the local index belongs to a different destination
-// than the configured one, fails without advising to run nuke again:
-// that run would fail the same way.
-func TestNukeRemoteRefusesAnotherDestinationWithoutRetryAdvice(t *testing.T) {
-	log.Initialize(log.Config{})
-	t.Parallel()
-
-	ctx := context.Background()
-	storeDir := filepath.Join(t.TempDir(), "store")
-	v, _, out := backUpToFileDestination(ctx, t, storeDir)
-
-	v.Config.StorageURL = "file://" + filepath.Join(t.TempDir(), "elsewhere")
-
-	err := v.NukeRemote(true)
-
-	require.ErrorContains(t, err, "bound to a different backup destination")
-	assert.NotContains(t, out.String(), "vaultik remote nuke --force")
-}
-
-// TestNukeRemoteFailsWhenALocalSnapshotCannotBeRemoved checks that a
-// snapshot remote nuke cannot remove from the local index fails the
-// run: nuke then leaves that snapshot's metadata on the destination
-// store.
-func TestNukeRemoteFailsWhenALocalSnapshotCannotBeRemoved(t *testing.T) {
-	log.Initialize(log.Config{})
-	t.Parallel()
-
-	ctx := context.Background()
-	storeDir := filepath.Join(t.TempDir(), "store")
-	v, _, out := backUpToFileDestination(ctx, t, storeDir)
-
-	_, err := v.DB.Conn().ExecContext(ctx, `
-		CREATE TRIGGER refuse_snapshot_delete BEFORE DELETE ON snapshots
-		BEGIN SELECT RAISE(ABORT, 'simulated index error'); END`)
-	require.NoError(t, err)
-
-	require.Error(t, v.NukeRemote(true))
-
-	assert.NotContains(t, out.String(), "now empty")
-	assert.Contains(t, out.String(), "vaultik remote nuke --force")
 }

internal/vaultik/prune.go

@@ -19,14 +19,6 @@ type PruneOptions struct {
 var errNukeRequiresForce = errors.New(
 	"nuke requires --force (this deletes ALL remote snapshots and blobs)")
 
-// errBlobDeleteFailed reports unreferenced blobs prune could not delete.
-var errBlobDeleteFailed = errors.New("blob(s) could not be deleted")
-
-// nukeCommandHint is the command suggested when a remote nuke could not
-// delete everything: running it again deletes what is left, which
-// `vaultik prune` does not do for snapshot metadata.
-const nukeCommandHint = "vaultik remote nuke --force"
-
 // metadataDirName is the top-level remote directory holding snapshot
 // metadata.
 const metadataDirName = "metadata"
@@ -47,29 +39,6 @@ func (v *Vaultik) NukeRemote(force bool) error {
 		return errNukeRequiresForce
 	}
 
-	// Checked before anything is deleted: running nuke again would fail
-	// the same way, so the advice below must not follow this error.
-	err := v.EnsureStorageBinding()
-	if err != nil {
-		return err
-	}
-
-	err = v.emptyDestinationStore()
-	if err != nil {
-		v.UI.Warningf("Run '%s' again to delete what is left on the "+
-			"backup destination store.", nukeCommandHint)
-
-		return err
-	}
-
-	v.UI.Completef("Backup destination store is now empty.")
-
-	return nil
-}
-
-// emptyDestinationStore does the deleting for NukeRemote and stops at
-// the first step that fails.
-func (v *Vaultik) emptyDestinationStore() error {
 	v.UI.Beginf("Removing all snapshot metadata from backup destination store.")
 
 	_, err := v.RemoveAllSnapshots(&RemoveOptions{Force: true})
@@ -93,6 +62,8 @@ func (v *Vaultik) emptyDestinationStore() error {
 		}
 	}
 
+	v.UI.Completef("Backup destination store is now empty.")
+
 	return nil
 }
 
@@ -195,17 +166,14 @@ func (v *Vaultik) PruneBlobs(opts *PruneOptions) error {
 	v.deleteUnreferencedBlobs(unreferencedBlobs, allBlobs, result)
 
 	if opts.JSON {
-		err = v.outputPruneBlobsJSON(result)
-		if err != nil {
-			return err
-		}
-	} else {
-		v.stdoutf("\nDeleted %d blob(s) totaling %s\n",
-			result.BlobsDeleted, ubytes(result.BytesFreed))
+		return v.outputPruneBlobsJSON(result)
 	}
 
+	v.stdoutf("\nDeleted %d blob(s) totaling %s\n",
+		result.BlobsDeleted, ubytes(result.BytesFreed))
+
 	if result.BlobsFailed > 0 {
-		return fmt.Errorf("%d %w", result.BlobsFailed, errBlobDeleteFailed)
+		v.stdoutf("Failed to delete %d blob(s)\n", result.BlobsFailed)
 	}
 
 	return nil

internal/vaultik/prune_delete_failure_test.go

@@ -1,98 +0,0 @@
-package vaultik_test
-
-import (
-	"context"
-	"encoding/json"
-	"os"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	"sneak.berlin/go/vaultik/internal/log"
-	"sneak.berlin/go/vaultik/internal/storage/faultstore"
-	"sneak.berlin/go/vaultik/internal/vaultik"
-)
-
-// refuseBlobDeletes is an OnDelete hook that fails every blob delete.
-func refuseBlobDeletes(key string) bool {
-	return strings.HasPrefix(key, "blobs/")
-}
-
-// TestPruneBlobs_FailedDeleteReturnsError checks that prune returns an
-// error, so the command exits non-zero, when an unreferenced blob cannot
-// be deleted.
-func TestPruneBlobs_FailedDeleteReturnsError(t *testing.T) {
-	log.Initialize(log.Config{})
-	t.Parallel()
-
-	env := newListEnv(t)
-
-	// The store holds no manifest, so nothing references this blob.
-	addBlob(t, env.store.testStorer, testBlobHashA)
-
-	store := faultstore.New(env.store)
-	store.OnDelete = refuseBlobDeletes
-	env.v.Storage = store
-
-	err := env.v.PruneBlobs(&vaultik.PruneOptions{Force: true})
-
-	require.ErrorContains(t, err, "1 blob(s) could not be deleted")
-}
-
-// TestPruneBlobs_JSONFailedDeleteReturnsError checks that prune --json
-// prints its document and then returns an error when an unreferenced
-// blob cannot be deleted.
-func TestPruneBlobs_JSONFailedDeleteReturnsError(t *testing.T) {
-	log.Initialize(log.Config{})
-	t.Parallel()
-
-	env := newListEnv(t)
-	addBlob(t, env.store.testStorer, testBlobHashA)
-
-	store := faultstore.New(env.store)
-	store.OnDelete = refuseBlobDeletes
-	env.v.Storage = store
-
-	err := env.v.PruneBlobs(&vaultik.PruneOptions{JSON: true})
-
-	require.Error(t, err, "prune must fail when a blob cannot be deleted")
-
-	var result vaultik.PruneBlobsResult
-
-	require.NoError(t, json.Unmarshal(env.stdout.Bytes(), &result),
-		"stdout must hold the JSON document, got:\n%s", env.stdout.String())
-	assert.Equal(t, 1, result.BlobsFailed)
-	assert.Equal(t, 0, result.BlobsDeleted)
-}
-
-// TestCreateSnapshotPrune_FailedBlobDeleteReturnsError checks that the
-// prune step of snapshot create --prune fails the run when an
-// unreferenced blob cannot be deleted.
-func TestCreateSnapshotPrune_FailedBlobDeleteReturnsError(t *testing.T) {
-	log.Initialize(log.Config{})
-	t.Parallel()
-
-	ctx := context.Background()
-	storeDir := filepath.Join(t.TempDir(), "store")
-	v, _, _ := backUpToFileDestination(ctx, t, storeDir)
-
-	// No snapshot references this blob, so the prune step deletes it.
-	orphan := filepath.Join(storeDir, "blobs", testBlobHashA[:2],
-		testBlobHashA[2:4], testBlobHashA)
-	require.NoError(t, os.MkdirAll(filepath.Dir(orphan), 0o750))
-	require.NoError(t, os.WriteFile(orphan, []byte("orphan"), 0o600))
-
-	store := faultstore.New(v.Storage)
-	store.OnDelete = refuseBlobDeletes
-	v.Storage = store
-
-	err := v.CreateSnapshot(&vaultik.SnapshotCreateOptions{
-		Cron:  true,
-		Prune: true,
-	})
-
-	require.ErrorContains(t, err, "1 blob(s) could not be deleted")
-	assert.FileExists(t, orphan)
-}

internal/vaultik/remove_snapshot_test.go

@@ -476,8 +476,7 @@ func TestRemoveAllSnapshots_WithForce(t *testing.T) {
 	out := tv.Stdout.String()
 	assert.Contains(t, out, "Removed 2 snapshot(s)")
 	assert.Contains(t, out, "Removed snapshot metadata from remote storage")
-	// Remote nuke, the only caller, deletes the blobs next itself.
-	assert.NotContains(t, out, "vaultik prune")
+	assert.Contains(t, out, "vaultik prune")
 }
 
 func TestRemoveAllSnapshots_DryRun(t *testing.T) {

internal/vaultik/restore.go

@@ -27,6 +27,7 @@ import (
 // Sentinel errors for restore failures.
 var (
 	errFilesFailedRestore    = errors.New("file(s) failed to restore")
+	errPathsNotInSnapshot    = errors.New("requested path(s) not in the snapshot")
 	errFilesFailedVerify     = errors.New("files failed verification")
 	errDecryptionKeyRequired = errors.New(
 		"decryption key required for restore\n\n" +
@@ -149,7 +150,7 @@ func (v *Vaultik) Restore(opts *RestoreOptions) error {
 	repos := database.NewRepositories(tempDB)
 
 	// Step 2: Get list of files to restore
-	files, err := v.getFilesToRestore(v.ctx, repos, opts.Paths)
+	files, unmatched, err := v.getFilesToRestore(v.ctx, repos, opts.Paths)
 	if err != nil {
 		return fmt.Errorf("getting files to restore: %w", err)
 	}
@@ -158,7 +159,7 @@ func (v *Vaultik) Restore(opts *RestoreOptions) error {
 		log.Warn("No files found to restore")
 		v.UI.Warningf("No files found to restore.")
 
-		return nil
+		return v.reportUnmatchedPaths(unmatched)
 	}
 
 	log.Info("Found files to restore", "count", len(files))
@@ -198,14 +199,16 @@ func (v *Vaultik) Restore(opts *RestoreOptions) error {
 		v.UI.Duration(result.Duration),
 	)
 
-	return v.finishRestore(repos, files, opts, result)
+	return v.finishRestore(repos, files, unmatched, opts, result)
 }
 
 // finishRestore emits the post-restore warnings, runs optional
-// verification, and converts any failed-file count into an error.
+// verification, and converts any failed-file count or requested path
+// that matched nothing into an error.
 func (v *Vaultik) finishRestore(
 	repos *database.Repositories,
 	files []*database.File,
+	unmatched []string,
 	opts *RestoreOptions,
 	result *RestoreResult,
 ) error {
@@ -223,6 +226,8 @@ func (v *Vaultik) finishRestore(
 		}
 	}
 
+	unmatchedErr := v.reportUnmatchedPaths(unmatched)
+
 	// Run verification if requested
 	if opts.Verify {
 		err := v.handleRestoreVerification(repos, files, opts, result)
@@ -235,7 +240,23 @@ func (v *Vaultik) finishRestore(
 		return fmt.Errorf("%d %w", result.FilesFailed, errFilesFailedRestore)
 	}
 
-	return nil
+	return unmatchedErr
+}
+
+// reportUnmatchedPaths warns, by name, about each requested path that
+// matched nothing in the snapshot, and returns an error counting them,
+// or nil when there are none.
+func (v *Vaultik) reportUnmatchedPaths(unmatched []string) error {
+	if len(unmatched) == 0 {
+		return nil
+	}
+
+	for _, path := range unmatched {
+		log.Warn("Requested path matches nothing in the snapshot", "path", path)
+		v.UI.Warningf("%s matches nothing in the snapshot.", v.UI.Path(path))
+	}
+
+	return fmt.Errorf("%d %w", len(unmatched), errPathsNotInSnapshot)
 }
 
 // restoreIdentities parses the configured age secret key once into every
@@ -702,8 +723,6 @@ func (v *Vaultik) downloadSnapshotDB(
 		return nil, "", fmt.Errorf("downloading %s: %w", dbKey, err)
 	}
 
-	reader = newCloseOnCancelReader(v.ctx, reader)
-
 	defer func() { _ = reader.Close() }()
 
 	// Decrypt and decompress straight from the storage stream, then stream
@@ -825,27 +844,34 @@ func (v *Vaultik) materializeSnapshotDB(
 	return db, tempDir, nil
 }
 
-// getFilesToRestore returns the list of files to restore based on path filters
+// getFilesToRestore returns the list of files to restore based on path
+// filters, and the filters, as given, that matched no file.
 func (v *Vaultik) getFilesToRestore(
 	ctx context.Context, repos *database.Repositories, pathFilters []string,
-) ([]*database.File, error) {
+) ([]*database.File, []string, error) {
 	// If no filters, get all files
 	if len(pathFilters) == 0 {
-		return repos.Files.ListAll(ctx)
+		files, err := repos.Files.ListAll(ctx)
+
+		return files, nil, err
 	}
 
 	// Get files matching the path filters
-	var result []*database.File
+	var (
+		result    []*database.File
+		unmatched []string
+	)
 
 	seen := make(map[string]bool)
 
 	for _, filter := range pathFilters {
-		// Normalize the filter path
-		filter = filepath.Clean(filter)
-
-		files, err := repos.Files.ListUnderPath(ctx, filter)
+		files, err := repos.Files.ListUnderPath(ctx, filepath.Clean(filter))
 		if err != nil {
-			return nil, fmt.Errorf("listing files under %s: %w", filter, err)
+			return nil, nil, fmt.Errorf("listing files under %s: %w", filter, err)
+		}
+
+		if len(files) == 0 {
+			unmatched = append(unmatched, filter)
 		}
 
 		for _, file := range files {
@@ -856,7 +882,7 @@ func (v *Vaultik) getFilesToRestore(
 		}
 	}
 
-	return result, nil
+	return result, unmatched, nil
 }
 
 // buildChunkToBlobMap creates a mapping from chunk hash to blob information

internal/vaultik/restore_interrupt_test.go

@@ -207,37 +207,30 @@ func TestRestoreSkipErrorsCancelDuringBlobDownload(t *testing.T) {
 		"the cancel was reported as a failed file")
 }
 
-// stallingStorer wraps a Storer so that each download of a key chosen by
-// stalls hands over the first half of the object and then stalls,
-// ignoring the context, as a file:// read on a hung USB stick or network
-// share does. Only closing the returned reader ends the stall.
-type stallingStorer struct {
+// stallingBlobStorer wraps a Storer so that every blob download hands
+// over the first half of the blob and then stalls, ignoring the context,
+// as a file:// blob on a hung USB stick or network share does. Only
+// closing the returned reader ends the stall.
+type stallingBlobStorer struct {
 	storage.Storer
 
-	stalls  func(key string) bool
 	once    sync.Once
 	stalled chan struct{}
 }
 
-func newStallingStorer(
-	inner storage.Storer, stalls func(key string) bool,
-) *stallingStorer {
-	return &stallingStorer{
-		Storer:  inner,
-		stalls:  stalls,
-		stalled: make(chan struct{}),
-	}
+func newStallingBlobStorer(inner storage.Storer) *stallingBlobStorer {
+	return &stallingBlobStorer{Storer: inner, stalled: make(chan struct{})}
 }
 
-func (s *stallingStorer) Get(
+func (s *stallingBlobStorer) Get(
 	ctx context.Context, key string,
 ) (io.ReadCloser, error) {
 	rc, err := s.Storer.Get(ctx, key)
-	if err != nil || !s.stalls(key) {
+	if err != nil || !strings.HasPrefix(key, "blobs/") {
 		return rc, err
 	}
 
-	object, err := io.ReadAll(rc)
+	blob, err := io.ReadAll(rc)
 	_ = rc.Close()
 
 	if err != nil {
@@ -249,7 +242,7 @@ func (s *stallingStorer) Get(
 	pr, pw := io.Pipe()
 
 	go func() {
-		_, _ = pw.Write(object[:len(object)/2])
+		_, _ = pw.Write(blob[:len(blob)/2])
 
 		s.once.Do(func() { close(s.stalled) })
 	}()
@@ -257,26 +250,17 @@ func (s *stallingStorer) Get(
 	return pr, nil
 }
 
-// TestInterruptDuringStalledReadCleansTempDir stops a restore and a deep
-// verify while a read of a blob or of the snapshot database is stalled
-// on a source that ignores the context. Stopping must end that read, so
-// the operation unwinds and removes its decrypted scratch files well
-// within the shutdown timeout (issues #325 and #356).
+// TestInterruptDuringStalledBlobReadCleansTempDir stops a restore and a
+// deep verify while a blob read is stalled on a source that ignores the
+// context. Stopping must end that read, so the operation unwinds and
+// removes its decrypted scratch files well within the shutdown timeout
+// (issue #325).
 //
 // Not parallel: it points TMPDIR at a private directory (via t.Setenv)
 // so it can assert on exactly the scratch files the operation created.
-func TestInterruptDuringStalledReadCleansTempDir(t *testing.T) {
+func TestInterruptDuringStalledBlobReadCleansTempDir(t *testing.T) {
 	log.Initialize(log.Config{})
 
-	stalledReads := map[string]func(key string) bool{
-		"blob": func(key string) bool {
-			return strings.HasPrefix(key, "blobs/")
-		},
-		"snapshot database": func(key string) bool {
-			return strings.HasSuffix(key, "/db.zst.age")
-		},
-	}
-
 	operations := map[string]func(v *Vaultik, snapshotID, targetDir string) error{
 		"restore": func(v *Vaultik, snapshotID, targetDir string) error {
 			return v.Restore(&RestoreOptions{
@@ -289,58 +273,52 @@ func TestInterruptDuringStalledReadCleansTempDir(t *testing.T) {
 		},
 	}
 
-	for readName, stalls := range stalledReads {
-		for opName, op := range operations {
-			t.Run(readName+" read during "+opName, func(t *testing.T) {
-				fs := afero.NewOsFs()
-				root := t.TempDir()
+	for name, op := range operations {
+		t.Run(name, func(t *testing.T) {
+			fs := afero.NewOsFs()
+			root := t.TempDir()
 
-				// Random content, so the blob stays large enough to stall
-				// part-way through its compressed, encrypted body.
-				cfg, storer, snapshotID, _ := backupOneFile(context.Background(),
-					t, fs, root, "a.bin", randomBytes(t, 256*1024), 0o644)
+			// Random content, so the blob stays large enough to stall
+			// part-way through its compressed, encrypted body.
+			cfg, storer, snapshotID, _ := backupOneFile(context.Background(),
+				t, fs, root, "a.bin", randomBytes(t, 256*1024), 0o644)
 
-				scratch := filepath.Join(root, "scratch")
-				require.NoError(t, fs.MkdirAll(scratch, 0o755))
-				t.Setenv("TMPDIR", scratch)
+			scratch := filepath.Join(root, "scratch")
+			require.NoError(t, fs.MkdirAll(scratch, 0o755))
+			t.Setenv("TMPDIR", scratch)
 
-				stalling := newStallingStorer(storer, stalls)
+			stalling := newStallingBlobStorer(storer)
 
-				ctx, cancel := context.WithCancel(context.Background())
-				defer cancel()
+			ctx, cancel := context.WithCancel(context.Background())
+			defer cancel()
 
-				v := newRestoreVaultik(ctx, cfg, stalling, fs)
-				v.cancel = cancel
+			v := newRestoreVaultik(ctx, cfg, stalling, fs)
+			v.cancel = cancel
 
-				var opErr error
+			var opErr error
 
-				stop := v.StartOperation(func() {
-					opErr = op(v, snapshotID, filepath.Join(root, "restored"))
-				})
-
-				select {
-				case <-stalling.stalled:
-				case <-time.After(30 * time.Second):
-					t.Fatal("the operation never reached the stalled read")
-				}
-
-				// The snapshot database's temp directory is created just
-				// after its read starts, so it can appear after the stall.
-				require.Eventually(t, func() bool {
-					return len(scratchEntries(t, scratch)) > 0
-				}, 10*time.Second, 10*time.Millisecond,
-					"expected decrypted scratch files to exist mid-read")
-
-				stopCtx, stopCancel := context.WithTimeout(
-					context.Background(), 10*time.Second)
-				defer stopCancel()
-
-				require.True(t, stop(stopCtx),
-					"stop timed out; the stalled read was not interrupted")
-				require.ErrorIs(t, opErr, context.Canceled)
-				require.Empty(t, scratchEntries(t, scratch),
-					"decrypted scratch files remained after the interrupt")
+			stop := v.StartOperation(func() {
+				opErr = op(v, snapshotID, filepath.Join(root, "restored"))
 			})
-		}
+
+			select {
+			case <-stalling.stalled:
+			case <-time.After(30 * time.Second):
+				t.Fatal("the operation never reached a blob read")
+			}
+
+			require.NotEmpty(t, scratchEntries(t, scratch),
+				"expected decrypted scratch files to exist mid-read")
+
+			stopCtx, stopCancel := context.WithTimeout(
+				context.Background(), 10*time.Second)
+			defer stopCancel()
+
+			require.True(t, stop(stopCtx),
+				"stop timed out; the stalled blob read was not interrupted")
+			require.ErrorIs(t, opErr, context.Canceled)
+			require.Empty(t, scratchEntries(t, scratch),
+				"decrypted scratch files remained after the interrupt")
+		})
 	}
 }

internal/vaultik/restore_unmatched_path_test.go

@@ -0,0 +1,142 @@
+package vaultik_test
+
+import (
+	"bytes"
+	"context"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/spf13/afero"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"sneak.berlin/go/vaultik/internal/config"
+	"sneak.berlin/go/vaultik/internal/database"
+	"sneak.berlin/go/vaultik/internal/log"
+	"sneak.berlin/go/vaultik/internal/storage"
+	"sneak.berlin/go/vaultik/internal/ui"
+	"sneak.berlin/go/vaultik/internal/vaultik"
+)
+
+// These tests cover https://git.eeqj.de/sneak/vaultik/issues/309: a path
+// given to restore that matches nothing in the snapshot is named in a
+// warning and makes the restore fail, after the paths that do match are
+// restored.
+
+func TestRestoreNamesUnmatchedPathAndRestoresTheMatchingOne(t *testing.T) {
+	log.Initialize(log.Config{})
+	t.Parallel()
+
+	fs := afero.NewOsFs()
+	tempDir := t.TempDir()
+	dataDir := filepath.Join(tempDir, "src")
+	storeDir := filepath.Join(tempDir, "remote")
+	restoreDir := filepath.Join(tempDir, "restored")
+	dbPath := filepath.Join(tempDir, "index.sqlite")
+
+	ctx := context.Background()
+	cfg := faultTestConfig()
+	files := writeFaultSourceTree(t, fs, dataDir)
+
+	store, err := storage.NewFileStorer(storeDir)
+	require.NoError(t, err)
+
+	db, err := database.New(ctx, dbPath)
+	require.NoError(t, err)
+
+	id := fullFaultBackup(ctx, t, fs, store, cfg,
+		database.NewRepositories(db), dataDir, dbPath, "unmatched")
+	require.NoError(t, db.Close())
+
+	matched := filepath.Join(dataDir, "small.txt")
+	unmatched := filepath.Join(dataDir, "typo.txt")
+
+	var out bytes.Buffer
+
+	v := newReaderVaultik(ctx, cfg, store, nil, fs)
+	v.UI = ui.NewWithColor(&out, false)
+
+	err = v.Restore(&vaultik.RestoreOptions{
+		SnapshotID: id,
+		TargetDir:  restoreDir,
+		Paths:      []string{matched, unmatched},
+	})
+
+	require.Error(t, err, "a path that matches nothing must fail the restore")
+	assert.Contains(t, out.String(), unmatched,
+		"the path that matches nothing must be named")
+	assert.NotContains(t, out.String(), matched,
+		"the path that matches must not be reported")
+
+	got, err := afero.ReadFile(fs, filepath.Join(restoreDir, matched))
+	require.NoError(t, err, "the path that matches must still be restored")
+	assert.Equal(t, files[matched], got)
+}
+
+// When no requested path matches, nothing is restored and each path is
+// named. One path is relative. The other goes through the symlink that
+// is the snapshot's configured path, while the entries are stored under
+// the directory the symlink points to.
+func TestRestoreNamesEveryPathWhenNothingMatches(t *testing.T) {
+	log.Initialize(log.Config{})
+	t.Parallel()
+
+	const snapshotName = "linked"
+
+	fs := afero.NewOsFs()
+	tempDir := t.TempDir()
+	dataDir := filepath.Join(tempDir, "src")
+	linkDir := filepath.Join(tempDir, "srclink")
+	storeDir := filepath.Join(tempDir, "remote")
+	restoreDir := filepath.Join(tempDir, "restored")
+	dbPath := filepath.Join(tempDir, "index.sqlite")
+
+	ctx := context.Background()
+	writeFaultSourceTree(t, fs, dataDir)
+	require.NoError(t, os.Symlink(dataDir, linkDir))
+
+	cfg := faultTestConfig()
+	cfg.IndexPath = dbPath
+	cfg.ChunkSize = config.Size(faultChunkSize)
+	cfg.Snapshots = map[string]config.SnapshotConfig{
+		snapshotName: {Paths: []string{linkDir}},
+	}
+
+	store, err := storage.NewFileStorer(storeDir)
+	require.NoError(t, err)
+
+	db, err := database.New(ctx, dbPath)
+	require.NoError(t, err)
+
+	repos := database.NewRepositories(db)
+	v := newBackupVaultik(ctx, cfg, store, repos, db, fs)
+
+	require.NoError(t, backUp(v, snapshotName))
+
+	id := localSnapshotID(ctx, t, repos, snapshotName)
+	require.NoError(t, db.Close())
+
+	throughLink := filepath.Join(linkDir, "sub")
+	relative := strings.TrimPrefix(filepath.Join(dataDir, "small.txt"), "/")
+
+	var out bytes.Buffer
+
+	reader := newReaderVaultik(ctx, cfg, store, nil, fs)
+	reader.UI = ui.NewWithColor(&out, false)
+
+	err = reader.Restore(&vaultik.RestoreOptions{
+		SnapshotID: id,
+		TargetDir:  restoreDir,
+		Paths:      []string{throughLink, relative},
+	})
+
+	require.Error(t, err, "a restore that matches nothing must fail")
+	assert.Contains(t, out.String(), throughLink,
+		"the path through the symlink must be named")
+	assert.Contains(t, out.String(), relative,
+		"the relative path must be named")
+
+	_, err = fs.Stat(restoreDir)
+	assert.True(t, os.IsNotExist(err), "nothing must be restored")
+}

internal/vaultik/reused_blob_verify_test.go

@@ -1,83 +0,0 @@
-package vaultik_test
-
-import (
-	"context"
-	"io"
-	"path/filepath"
-	"testing"
-
-	"filippo.io/age"
-	"github.com/spf13/afero"
-	"github.com/stretchr/testify/require"
-	"sneak.berlin/go/vaultik/internal/log"
-	"sneak.berlin/go/vaultik/internal/ui"
-	"sneak.berlin/go/vaultik/internal/vaultik"
-)
-
-// TestVerifyPassesWhenBackupReusesStoredBlob backs up a file, then backs it
-// up again from an empty local index, as after `database delete`, with an
-// extra age recipient. The second backup builds the same blob, finds it
-// already stored and skips the upload, but its own copy is larger, because
-// age writes a header entry for each recipient. The second snapshot must
-// record the size of the stored object, so shallow and deep verify pass.
-func TestVerifyPassesWhenBackupReusesStoredBlob(t *testing.T) {
-	log.Initialize(log.Config{})
-	t.Parallel()
-
-	fs := afero.NewOsFs()
-	tempDir := t.TempDir()
-
-	dataDir := filepath.Join(tempDir, "source")
-	storeDir := filepath.Join(tempDir, "remote")
-	secondDBPath := filepath.Join(tempDir, "second.sqlite")
-
-	chunkSize := int64(64 * 1024)
-	maxBlobSize := int64(512 * 1024)
-
-	require.NoError(t, fs.MkdirAll(dataDir, 0o755))
-	require.NoError(t, afero.WriteFile(fs,
-		filepath.Join(dataDir, "data.bin"),
-		bytesPattern("reuse-", int(chunkSize*3)), 0o644))
-
-	ctx := context.Background()
-
-	runFileStorageBackup(ctx, t, fs, dataDir, storeDir,
-		filepath.Join(tempDir, "first.sqlite"), chunkSize, maxBlobSize)
-
-	env := setupDedupBackupEnv(
-		ctx, t, fs, storeDir, secondDBPath, chunkSize, maxBlobSize)
-
-	defer func() { _ = env.db.Close() }()
-
-	extra, err := age.GenerateX25519Identity()
-	require.NoError(t, err)
-
-	env.cfg.AgeRecipients = append(env.cfg.AgeRecipients,
-		extra.Recipient().String())
-
-	snapshotID, result := runDedupSnapshot(ctx, t, env.sm, env.makeScanner(),
-		env.cfg.Hostname, "second", dataDir, secondDBPath)
-	require.Positive(t, result.BlobsCreated)
-	require.Zero(t, result.BlobsUploaded,
-		"the second backup should find every blob already stored")
-
-	require.NoError(t, env.db.Close())
-
-	verifier := &vaultik.Vaultik{
-		Config:  env.cfg,
-		Storage: env.storer,
-		Fs:      fs,
-		Stdout:  io.Discard,
-		Stderr:  io.Discard,
-		UI:      ui.NewWithColor(io.Discard, false),
-	}
-	verifier.SetContext(ctx)
-
-	require.NoError(t,
-		verifier.VerifySnapshotWithOptions(snapshotID, &vaultik.VerifyOptions{}),
-		"shallow verify should pass")
-	require.NoError(t,
-		verifier.VerifySnapshotWithOptions(snapshotID,
-			&vaultik.VerifyOptions{Deep: true}),
-		"deep verify should pass")
-}

internal/vaultik/shallow_verify_test.go

@@ -4,20 +4,15 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
-	"errors"
-	"fmt"
 	"io"
 	"os"
-	"path"
 	"path/filepath"
-	"slices"
 	"testing"
 
 	"github.com/spf13/afero"
 	"github.com/stretchr/testify/require"
 	"sneak.berlin/go/vaultik/internal/log"
 	"sneak.berlin/go/vaultik/internal/snapshot"
-	"sneak.berlin/go/vaultik/internal/storage"
 	"sneak.berlin/go/vaultik/internal/ui"
 	"sneak.berlin/go/vaultik/internal/vaultik"
 )
@@ -156,224 +151,6 @@ func TestShallowVerifyDetectsMissingDatabase(t *testing.T) {
 		"shallow verify must fail when db.zst.age is absent")
 }
 
-// errStatDenied stands in for any storage error other than not-found: a
-// permission error, an S3 403, a dropped connection.
-var errStatDenied = errors.New("injected stat failure")
-
-// statFailingStorer fails Stat with errStatDenied for the keys in
-// failKeys and passes every other call to the wrapped Storer.
-type statFailingStorer struct {
-	storage.Storer
-
-	failKeys []string
-}
-
-func (s statFailingStorer) Stat(
-	ctx context.Context, key string,
-) (*storage.ObjectInfo, error) {
-	if slices.Contains(s.failKeys, key) {
-		return nil, fmt.Errorf("stat %q: %w", key, errStatDenied)
-	}
-
-	return s.Storer.Stat(ctx, key)
-}
-
-// TestShallowVerifyReportsStatErrorsApartFromMissing backs up a real
-// snapshot, deletes one blob, and makes storage fail Stat with an error
-// other than not-found for a second blob and for the encrypted database.
-// Only the deleted blob may be counted as missing. The second blob and
-// the database must be reported as could not be checked, with the error
-// storage returned, and verify must fail, in the text output and under
-// --json.
-func TestShallowVerifyReportsStatErrorsApartFromMissing(t *testing.T) {
-	log.Initialize(log.Config{})
-	t.Parallel()
-
-	fs := afero.NewOsFs()
-	tempDir := t.TempDir()
-
-	dataDir := filepath.Join(tempDir, "source")
-	storeDir := filepath.Join(tempDir, "remote")
-	dbPath := filepath.Join(tempDir, "index.sqlite")
-
-	chunkSize := int64(32 * 1024)
-	maxBlobSize := int64(128 * 1024)
-
-	// Random content, so the snapshot spans several blobs.
-	require.NoError(t, fs.MkdirAll(dataDir, 0o755))
-	appendRandomBytes(t, fs, map[string][]byte{},
-		filepath.Join(dataDir, "data.bin"), maxBlobSize*4)
-
-	ctx := context.Background()
-
-	cfg, storer, snapshotID := runFileStorageBackup(
-		ctx, t, fs, dataDir, storeDir, dbPath, chunkSize, maxBlobSize)
-
-	blobKeys := storedBlobKeys(t, storeDir)
-	require.GreaterOrEqual(t, len(blobKeys), 2, "expected at least two blobs")
-
-	missingKey, uncheckedKey := blobKeys[0], blobKeys[1]
-	missingHash, uncheckedHash := path.Base(missingKey), path.Base(uncheckedKey)
-
-	require.NoError(t, os.Remove(filepath.Join(storeDir, missingKey)))
-
-	dbKey := "metadata/" + snapshot.RemoteSnapshotKey(snapshotID) + "/db.zst.age"
-	failing := statFailingStorer{
-		Storer:   storer,
-		failKeys: []string{uncheckedKey, dbKey},
-	}
-
-	newVerifier := func(out io.Writer) *vaultik.Vaultik {
-		v := &vaultik.Vaultik{
-			Config:  cfg,
-			Storage: failing,
-			Fs:      fs,
-			Stdout:  out,
-			Stderr:  io.Discard,
-			UI:      ui.NewWithColor(io.Discard, false),
-		}
-		v.SetContext(ctx)
-
-		return v
-	}
-
-	var out bytes.Buffer
-
-	err := newVerifier(&out).VerifySnapshotWithOptions(
-		snapshotID, &vaultik.VerifyOptions{JSON: true})
-	require.Error(t, err)
-
-	result := decodeVerifyResult(t, out.Bytes())
-	require.Equal(t, "failed", result.Status)
-	require.Equal(t, 1, result.Missing, "only the deleted blob is missing")
-	require.Equal(t, result.BlobCount-2, result.Verified)
-	require.Len(t, result.Unchecked, 1)
-	require.Equal(t, uncheckedHash, result.Unchecked[0].Hash)
-	require.Contains(t, result.Unchecked[0].Error, errStatDenied.Error())
-	require.False(t, result.DatabaseMissing,
-		"a database that could not be checked is not missing")
-	require.Contains(t, result.DatabaseCheckError, errStatDenied.Error())
-
-	out.Reset()
-	err = newVerifier(&out).VerifySnapshotWithOptions(
-		snapshotID, &vaultik.VerifyOptions{})
-	require.Error(t, err)
-
-	text := out.String()
-	require.Contains(t, text, "Missing: "+missingHash)
-	require.NotContains(t, text, "Missing: "+uncheckedHash)
-	require.Contains(t, text, "Could not check: "+uncheckedHash)
-	require.Contains(t, text, "Encrypted database:       could not be checked")
-	require.Contains(t, text, errStatDenied.Error())
-	require.Contains(t, text, "FAILED")
-}
-
-// TestShallowVerifyQuietFailsOnStatErrorAlone backs up a healthy snapshot,
-// then makes storage fail Stat, with an error other than not-found, for
-// one blob alone and then for the encrypted database alone. Each run must
-// fail verify, and under --quiet, which drops the report, the error
-// storage returned must still reach stderr.
-//
-//nolint:paralleltest // captureProcessStderr replaces os.Stderr
-func TestShallowVerifyQuietFailsOnStatErrorAlone(t *testing.T) {
-	log.Initialize(log.Config{})
-
-	fs := afero.NewOsFs()
-	tempDir := t.TempDir()
-
-	dataDir := filepath.Join(tempDir, "source")
-	storeDir := filepath.Join(tempDir, "remote")
-	dbPath := filepath.Join(tempDir, "index.sqlite")
-
-	chunkSize := int64(32 * 1024)
-	maxBlobSize := int64(128 * 1024)
-
-	require.NoError(t, fs.MkdirAll(dataDir, 0o755))
-	require.NoError(t, afero.WriteFile(fs,
-		filepath.Join(dataDir, "data.bin"),
-		bytesPattern("shallow-quiet-", int(maxBlobSize*2)), 0o644))
-
-	ctx := context.Background()
-
-	cfg, storer, snapshotID := runFileStorageBackup(
-		ctx, t, fs, dataDir, storeDir, dbPath, chunkSize, maxBlobSize)
-
-	newQuietVerifier := func(s storage.Storer) *vaultik.Vaultik {
-		v := &vaultik.Vaultik{
-			Config:  cfg,
-			Storage: s,
-			Fs:      fs,
-			Stdout:  io.Discard,
-			Stderr:  io.Discard,
-			UI:      ui.NewWithColor(io.Discard, false),
-		}
-		v.SetContext(ctx)
-		v.UI.SetQuiet(true)
-
-		return v
-	}
-
-	require.NoError(t,
-		newQuietVerifier(storer).VerifySnapshotWithOptions(
-			snapshotID, &vaultik.VerifyOptions{}),
-		"shallow verify should pass on a healthy snapshot")
-
-	blobKeys := storedBlobKeys(t, storeDir)
-	require.NotEmpty(t, blobKeys)
-
-	dbKey := "metadata/" + snapshot.RemoteSnapshotKey(snapshotID) + "/db.zst.age"
-
-	for _, failKey := range []string{blobKeys[0], dbKey} {
-		v := newQuietVerifier(statFailingStorer{
-			Storer:   storer,
-			failKeys: []string{failKey},
-		})
-
-		var err error
-
-		stderr := captureProcessStderr(t, func() {
-			err = v.VerifySnapshotWithOptions(
-				snapshotID, &vaultik.VerifyOptions{})
-		})
-
-		require.Error(t, err,
-			"verify must fail when %s could not be checked", failKey)
-		require.Contains(t, stderr, errStatDenied.Error(),
-			"under --quiet the error for %s must still reach stderr", failKey)
-	}
-}
-
-// storedBlobKeys returns the storage key of every blob file under
-// storeDir, sorted.
-func storedBlobKeys(t *testing.T, storeDir string) []string {
-	t.Helper()
-
-	var keys []string
-
-	err := filepath.Walk(filepath.Join(storeDir, "blobs"),
-		func(p string, info os.FileInfo, err error) error {
-			if err != nil {
-				return err
-			}
-
-			if info.IsDir() {
-				return nil
-			}
-
-			rel, err := filepath.Rel(storeDir, p)
-			if err != nil {
-				return err
-			}
-
-			keys = append(keys, filepath.ToSlash(rel))
-
-			return nil
-		})
-	require.NoError(t, err)
-
-	return keys
-}
-
 // growOneBlob appends bytes to the first blob file found under blobsDir,
 // changing its on-disk size so it no longer matches the manifest.
 func growOneBlob(t *testing.T, fs afero.Fs, blobsDir string) {

internal/vaultik/snapshot.go

@@ -14,7 +14,6 @@ import (
 
 	"sneak.berlin/go/vaultik/internal/log"
 	"sneak.berlin/go/vaultik/internal/snapshot"
-	"sneak.berlin/go/vaultik/internal/storage"
 	"sneak.berlin/go/vaultik/internal/types"
 )
 
@@ -25,7 +24,6 @@ var (
 	errSnapshotVerifyFailed = errors.New("verification failed")
 	errRemoveAllNeedsForce  = errors.New("--all requires --force")
 	errSnapshotNotFound     = errors.New("snapshot not found")
-	errSnapshotRemoveFailed = errors.New("snapshot(s) could not be removed")
 	errInvalidTableName     = errors.New("invalid table name")
 	errNoAgeRecipients      = errors.New(
 		"creating a snapshot needs at least one public key in " +
@@ -779,10 +777,18 @@ func (v *Vaultik) VerifySnapshotWithOptions(
 		v.stdoutf("Checking blob presence and sizes...\n")
 	}
 
-	v.checkSnapshotDatabase(remoteKey, result)
+	// A snapshot is only restorable if its encrypted database is present
+	// alongside the blobs. Shallow verify checks that the object exists; it
+	// does not decrypt it (that is deep verify's job).
+	dbPath := fmt.Sprintf("metadata/%s/db.zst.age", remoteKey)
 
-	result.Verified, result.Missing, result.Mismatched, result.MissingSize,
-		result.Unchecked, err = v.verifyManifestBlobs(manifest, opts)
+	_, dbErr := v.Storage.Stat(v.ctx, dbPath)
+	if dbErr != nil {
+		result.DatabaseMissing = true
+	}
+
+	result.Verified, result.Missing, result.Mismatched, result.MissingSize, err =
+		v.verifyManifestBlobs(manifest, opts)
 	if err != nil {
 		if opts.JSON {
 			result.Status = verifyStatusFailed
@@ -819,46 +825,25 @@ func (v *Vaultik) printVerifyHeader(snapshotID string, opts *VerifyOptions) {
 	}
 }
 
-// checkSnapshotDatabase records in result whether the snapshot's
-// encrypted database is missing or could not be checked. A snapshot is
-// only restorable if its database is present alongside the blobs.
-// Shallow verify checks that the object exists; it does not decrypt it
-// (that is deep verify's job).
-func (v *Vaultik) checkSnapshotDatabase(remoteKey string, result *VerifyResult) {
-	dbPath := fmt.Sprintf("metadata/%s/db.zst.age", remoteKey)
-
-	_, err := v.Storage.Stat(v.ctx, dbPath)
-
-	switch {
-	case errors.Is(err, storage.ErrNotFound):
-		result.DatabaseMissing = true
-	case err != nil:
-		result.DatabaseCheckError = err.Error()
-	}
-}
-
 // verifyManifestBlobs checks that each blob in the manifest is present in
 // storage with the size the manifest records, returning the counts of
 // blobs that were present with the right size, absent, and present but the
-// wrong size, the total bytes of the absent blobs, and the blobs it could
-// not check because storage returned an error other than not-found. It
-// does not read blob contents; deep verification (RunDeepVerify) does
-// that. The size comparison matches the deep path (see
-// verifyBlobExistenceFromDB).
+// wrong size, plus the total bytes of the absent blobs. It does not read
+// blob contents; deep verification (RunDeepVerify) does that. The size
+// comparison matches the deep path (see verifyBlobExistenceFromDB).
 func (v *Vaultik) verifyManifestBlobs(
 	manifest *snapshot.Manifest, opts *VerifyOptions,
-) (int, int, int, int64, []UncheckedBlob, error) {
+) (int, int, int, int64, error) {
 	var (
 		verified, missing, mismatched int
 		missingSize                   int64
-		unchecked                     []UncheckedBlob
 	)
 
 	for _, blob := range manifest.Blobs {
 		// The manifest is unauthenticated, so its blob hashes are checked
 		// before being spliced into a storage path.
 		if !isBlobHash(blob.Hash) {
-			return 0, 0, 0, 0, nil, fmt.Errorf("%w: %s",
+			return 0, 0, 0, 0, fmt.Errorf("%w: %s",
 				errInvalidBlobHash, shortHash(blob.Hash))
 		}
 
@@ -867,7 +852,7 @@ func (v *Vaultik) verifyManifestBlobs(
 
 		stat, err := v.Storage.Stat(v.ctx, blobPath)
 		switch {
-		case errors.Is(err, storage.ErrNotFound):
+		case err != nil:
 			if !opts.JSON && !v.UI.Quiet() {
 				v.stdoutf("  Missing: %s (%s)\n",
 					blob.Hash, ubytes(blob.CompressedSize))
@@ -875,13 +860,6 @@ func (v *Vaultik) verifyManifestBlobs(
 
 			missing++
 			missingSize += blob.CompressedSize
-		case err != nil:
-			if !opts.JSON && !v.UI.Quiet() {
-				v.stdoutf("  Could not check: %s (%v)\n", blob.Hash, err)
-			}
-
-			unchecked = append(unchecked,
-				UncheckedBlob{Hash: blob.Hash, Error: err.Error()})
 		case stat.Size != blob.CompressedSize:
 			if !opts.JSON && !v.UI.Quiet() {
 				v.stdoutf("  Wrong size: %s (store has %s, manifest lists %s)\n",
@@ -894,7 +872,7 @@ func (v *Vaultik) verifyManifestBlobs(
 		}
 	}
 
-	return verified, missing, mismatched, missingSize, unchecked, nil
+	return verified, missing, mismatched, missingSize, nil
 }
 
 // formatVerifyResult outputs the final verification results as JSON or
@@ -915,19 +893,9 @@ func (v *Vaultik) formatVerifyResult(
 		return v.outputVerifyJSON(result)
 	}
 
-	// --quiet drops the report but not the errors storage returned, which
-	// are logged on stderr. A failure is still returned either way, and
-	// the cli layer prints it on stderr.
-	if v.UI.Quiet() {
-		for _, blob := range result.Unchecked {
-			log.Warn("Could not check blob", "blob", blob.Hash, "error", blob.Error)
-		}
-
-		if result.DatabaseCheckError != "" {
-			log.Warn("Could not check the encrypted database",
-				"snapshot", result.SnapshotID, "error", result.DatabaseCheckError)
-		}
-	} else {
+	// Under --quiet a failure is still returned, and the cli layer
+	// prints it on stderr.
+	if !v.UI.Quiet() {
 		v.printVerifySummary(result, failure)
 	}
 
@@ -953,19 +921,10 @@ func (v *Vaultik) printVerifySummary(result *VerifyResult, failure string) {
 		v.stdoutf("  Wrong size:               %d blobs\n", result.Mismatched)
 	}
 
-	if len(result.Unchecked) > 0 {
-		v.stdoutf("  Could not check:          %d blobs\n", len(result.Unchecked))
-	}
-
 	if result.DatabaseMissing {
 		v.stdoutf("  Encrypted database:       missing\n")
 	}
 
-	if result.DatabaseCheckError != "" {
-		v.stdoutf("  Encrypted database:       could not be checked (%s)\n",
-			result.DatabaseCheckError)
-	}
-
 	v.stdoutf("  Status:       ")
 
 	if failure != "" {
@@ -993,19 +952,10 @@ func shallowVerifyFailure(result *VerifyResult) string {
 			fmt.Sprintf("%d blobs have the wrong size", result.Mismatched))
 	}
 
-	if len(result.Unchecked) > 0 {
-		parts = append(parts, fmt.Sprintf("%d blobs could not be checked",
-			len(result.Unchecked)))
-	}
-
 	if result.DatabaseMissing {
 		parts = append(parts, "the encrypted database is missing")
 	}
 
-	if result.DatabaseCheckError != "" {
-		parts = append(parts, "the encrypted database could not be checked")
-	}
-
 	return strings.Join(parts, "; ")
 }
 
@@ -1592,8 +1542,8 @@ func (v *Vaultik) handleRemoveAllDryRun(
 
 // executeRemoveAll deletes every local snapshot and, unless LocalOnly
 // is set, every corresponding remote metadata directory plus any
-// orphan remote keys. Blobs are not touched. It returns an error when
-// any snapshot could not be removed.
+// orphan remote keys. Blobs are not touched; the printed prune-command
+// hint is the next step.
 func (v *Vaultik) executeRemoveAll(
 	localSnaps, orphanRemoteKeys []string, opts *RemoveOptions,
 ) (*RemoveResult, error) {
@@ -1607,11 +1557,18 @@ func (v *Vaultik) executeRemoveAll(
 
 	result := &RemoveResult{}
 
-	failures := v.removeAllLocalSnapshots(localSnaps, opts, result)
+	remoteErrors := v.removeAllLocalSnapshots(localSnaps, opts, result)
 
 	if !opts.LocalOnly {
-		failures += v.removeAllOrphanRemotes(orphanRemoteKeys, result)
-		result.RemoteRemoved = failures == 0
+		remoteErrors += v.removeAllOrphanRemotes(orphanRemoteKeys, result)
+
+		if remoteErrors == 0 {
+			result.RemoteRemoved = true
+		} else if v.UI != nil {
+			v.UI.Warningf("Some remote metadata deletions failed. Run '%s' "+
+				"once the remote is healthy to clean up unreferenced blobs.",
+				pruneCommandHint)
+		}
 	}
 
 	if v.SnapshotManager != nil {
@@ -1621,10 +1578,6 @@ func (v *Vaultik) executeRemoveAll(
 		}
 	}
 
-	if failures > 0 {
-		return result, fmt.Errorf("%d %w", failures, errSnapshotRemoveFailed)
-	}
-
 	if opts.JSON {
 		return result, v.outputRemoveJSON(result)
 	}
@@ -1633,6 +1586,9 @@ func (v *Vaultik) executeRemoveAll(
 
 	if !opts.LocalOnly && result.RemoteRemoved {
 		v.printlnStdout("Removed snapshot metadata from remote storage")
+		v.stdoutf("\nNote: Removed snapshots' blobs remain on the remote. "+
+			"Run '%s' to delete any blobs no longer referenced by any "+
+			"remaining remote snapshot.\n", pruneCommandHint)
 	}
 
 	return result, nil
@@ -1675,13 +1631,12 @@ func (v *Vaultik) deleteIncompleteSnapshot(snapshotIDStr string, id any) bool {
 }
 
 // removeAllLocalSnapshots removes each known local snapshot (and, unless
-// --local-only, its remote metadata), returning the number of snapshots
-// it could not remove. A snapshot left in the local index keeps its
-// remote metadata too, since it is not an orphan remote key.
+// --local-only, its remote metadata), returning the number of remote
+// deletion failures.
 func (v *Vaultik) removeAllLocalSnapshots(
 	localSnaps []string, opts *RemoveOptions, result *RemoveResult,
 ) int {
-	failures := 0
+	remoteErrors := 0
 
 	for _, snapshotID := range localSnaps {
 		log.Info("Removing snapshot", "snapshot_id", snapshotID)
@@ -1691,8 +1646,6 @@ func (v *Vaultik) removeAllLocalSnapshots(
 			log.Error("Failed to remove from local database",
 				"snapshot_id", snapshotID, "error", err)
 
-			failures++
-
 			continue
 		}
 
@@ -1703,14 +1656,14 @@ func (v *Vaultik) removeAllLocalSnapshots(
 				log.Warn("Failed to remove snapshot metadata from remote",
 					"snapshot_id", snapshotID, "error", err)
 
-				failures++
+				remoteErrors++
 			}
 		}
 
 		result.SnapshotsRemoved = append(result.SnapshotsRemoved, snapshotID)
 	}
 
-	return failures
+	return remoteErrors
 }
 
 // removeAllOrphanRemotes deletes remote snapshot metadata that has no

internal/vaultik/verify.go

@@ -57,25 +57,11 @@ type VerifyResult struct {
 	Missing     int    `json:"missing"`
 	MissingSize int64  `json:"missing_size,omitempty"`
 	Mismatched  int    `json:"mismatched,omitempty"`
-	// Unchecked lists the blobs shallow verify could not check, because
-	// storage answered with an error other than not-found, so whether
-	// they are present is unknown.
-	Unchecked []UncheckedBlob `json:"unchecked,omitempty"`
 	// DatabaseMissing is set by shallow verify when the snapshot's
 	// encrypted database (metadata/<key>/db.zst.age) is absent, which
 	// makes the snapshot unrestorable regardless of the blobs.
-	DatabaseMissing bool `json:"database_missing,omitempty"`
-	// DatabaseCheckError is set by shallow verify to the error storage
-	// returned when the encrypted database could not be checked.
-	DatabaseCheckError string `json:"database_check_error,omitempty"`
-	ErrorMessage       string `json:"error,omitempty"`
-}
-
-// UncheckedBlob is a blob shallow verify could not check, with the error
-// storage returned for it.
-type UncheckedBlob struct {
-	Hash  string `json:"hash"`
-	Error string `json:"error"`
+	DatabaseMissing bool   `json:"database_missing,omitempty"`
+	ErrorMessage    string `json:"error,omitempty"`
 }
 
 // deepVerifyFailure records a failure in the result and returns it appropriately
@@ -260,8 +246,6 @@ func (v *Vaultik) downloadVerifiedSnapshotDB(
 			fmt.Errorf("failed to download database: %w", err))
 	}
 
-	dbReader = newCloseOnCancelReader(v.ctx, dbReader)
-
 	defer func() { _ = dbReader.Close() }()
 
 	tdb, err := v.decryptAndLoadDatabase(dbReader, identities)