saveConfig(ctx, objAPI, dataUsageObjNamePath+".bkp", dataUsageJSON) // Save a backup every 10th update.
			attempts = 1
		}
		if err = saveConfig(ctx, objAPI, dataUsageObjNamePath, dataUsageJSON); err != nil {
			scannerLogOnceIf(ctx, err, dataUsageObjNamePath)
		}
		attempts++
	}
}

var prefixUsageCache = cachevalue.New[map[string]uint64]()

// loadPrefixUsageFromBackend returns prefix usages found in passed buckets
//

					continue
				}
				scannerLogOnceIf(ctx, cache.save(ctx, er, dataUsageCacheName), "nsscanner-cache-update")
				updates <- cache.clone()

				lastSave = cache.Info.LastUpdate
			case v, ok := <-bucketResults:
				if !ok {
					// Save final state...
					cache.Info.NextCycle = wantCycle
					cache.Info.LastUpdate = time.Now()

	logger.LogOnceConsoleIf(ctx, "config", err, id, errKind...)
}

func scannerLogIf(ctx context.Context, err error, errKind ...interface{}) {
	logger.LogIf(ctx, "scanner", err, errKind...)
}

func scannerLogOnceIf(ctx context.Context, err error, id string, errKind ...interface{}) {
	logger.LogOnceIf(ctx, "scanner", err, id, errKind...)
}

func ilmLogIf(ctx context.Context, err error, errKind ...interface{}) {

		if err != nil {
			scannerLogOnceIf(ctx, err, i.bucket)
			return
		}

		// Check if bucket is object locked.
		lr, err = globalBucketObjectLockSys.Get(i.bucket)
		if err != nil {
			scannerLogOnceIf(ctx, err, i.bucket)
			return
		}

		rcfg, err = getReplicationConfig(ctx, i.bucket)
		if err != nil {
			scannerLogOnceIf(ctx, err, i.bucket)
			return
		}
	}

		return
	}
	// If off by 2 orders of magnitude, compact self and log error.
	if len(topE.Children) > dataScannerForceCompactAtFolders {
		// If we still have too many children, compact self.
		scannerLogOnceIf(GlobalContext, fmt.Errorf("forceCompact: %q has %d children. Force compacting. Expect reduced scanner performance", d.Info.Name, len(topE.Children)), d.Info.Name)
		d.reduceChildrenOf(hashPath(d.Info.Name), limit, true)
	}