Fix various typos and logging anomalies.

internal/reportutils/reportutils.go

@@ -183,5 +183,6 @@ func FindBestUnit[T num16Plus](count T) DataUnit {
 // FmtBytes is a convenience that combines BytesToUnit with FindBestUnit.
 // Use it to format a single count of bytes.
 func FmtBytes[T num16Plus](count T) string {
-	return BytesToUnit(count, FindBestUnit(count))
+	unit := FindBestUnit(count)
+	return BytesToUnit(count, unit) + " " + string(unit)
 }

internal/verifier/check.go

@@ -146,7 +146,7 @@ func (verifier *Verifier) CheckWorker(ctxIn context.Context) error {
 		err = nil
 	}
 
-	if err != nil {
+	if err == nil {
 		verifier.logger.Debug().
 			Int("generation", generation).
 			Msgf("Check finished.")
@@ -432,11 +432,6 @@ func (verifier *Verifier) work(ctx context.Context, workerNum int) error {
 			duration := verifier.workerSleepDelayMillis * time.Millisecond
 
 			if duration > 0 {
-				verifier.logger.Debug().
-					Int("workerNum", workerNum).
-					Stringer("duration", duration).
-					Msg("No tasks found. Sleeping.")
-
 				time.Sleep(duration)
 			}
 
@@ -453,6 +448,8 @@ func (verifier *Verifier) work(ctx context.Context, workerNum int) error {
 		switch task.Type {
 		case verificationTaskVerifyCollection:
 			err := verifier.ProcessCollectionVerificationTask(ctx, workerNum, task)
+			verifier.workerTracker.Unset(workerNum)
+
 			if err != nil {
 				return err
 			}
@@ -464,6 +461,8 @@ func (verifier *Verifier) work(ctx context.Context, workerNum int) error {
 			}
 		case verificationTaskVerifyDocuments:
 			err := verifier.ProcessVerifyTask(ctx, workerNum, task)
+			verifier.workerTracker.Unset(workerNum)
+
 			if err != nil {
 				return err
 			}

internal/verifier/migration_verifier.go

@@ -503,11 +503,16 @@ func (verifier *Verifier) getDocumentsCursor(ctx context.Context, collection *mo
 		}
 	}
 	findCmd := append(bson.D{{"find", collection.Name()}}, findOptions...)
-	verifier.logger.Debug().
-		Interface("task", task.PrimaryKey).
-		Str("findCmd", fmt.Sprintf("%s", findCmd)).
-		Str("options", fmt.Sprintf("%v", *runCommandOptions)).
-		Msg("getDocuments findCmd.")
+
+	// Suppress this log for recheck tasks because the list of IDs can be
+	// quite long.
+	if len(task.Ids) == 0 {
+		verifier.logger.Debug().
+			Interface("task", task.PrimaryKey).
+			Str("findCmd", fmt.Sprintf("%s", findCmd)).
+			Str("options", fmt.Sprintf("%v", *runCommandOptions)).
+			Msg("getDocuments findCmd.")
+	}
 
 	return collection.Database().RunCommandCursor(ctx, findCmd, runCommandOptions)
 }
@@ -595,16 +600,6 @@ func (verifier *Verifier) ProcessVerifyTask(ctx context.Context, workerNum int,
 		Interface("task", task.PrimaryKey).
 		Msg("Processing document comparison task.")
 
-	defer func() {
-		elapsed := time.Since(start)
-
-		verifier.logger.Debug().
-			Int("workerNum", workerNum).
-			Interface("task", task.PrimaryKey).
-			Stringer("timeElapsed", elapsed).
-			Msg("Finished document comparison task.")
-	}()
-
 	problems, docsCount, bytesCount, err := verifier.FetchAndCompareDocuments(
 		ctx,
 		task,
@@ -681,12 +676,24 @@ func (verifier *Verifier) ProcessVerifyTask(ctx context.Context, workerNum int,
 		}
 	}
 
-	return errors.Wrapf(
-		verifier.UpdateVerificationTask(ctx, task),
-		"failed to persist task %s's new status (%#q)",
-		task.PrimaryKey,
-		task.Status,
-	)
+	err = verifier.UpdateVerificationTask(ctx, task)
+
+	if err != nil {
+		return errors.Wrapf(
+			err,
+			"failed to persist task %s's new status (%#q)",
+			task.PrimaryKey,
+			task.Status,
+		)
+	}
+
+	verifier.logger.Debug().
+		Int("workerNum", workerNum).
+		Interface("task", task.PrimaryKey).
+		Stringer("timeElapsed", time.Since(start)).
+		Msg("Finished document comparison task.")
+
+	return nil
 }
 
 func (verifier *Verifier) logChunkInfo(ctx context.Context, namespaceAndUUID *uuidutil.NamespaceAndUUID) {