fix: replaced drive properly by healing the entire drive (#10799)

Bonus fixes, we do not need reload format anymore
as the replaced drive is healed locally we only need
to ensure that drive heal reloads the drive properly.

We preserve the UUID of the original order, this means
that the replacement in `format.json` doesn't mean that
the drive needs to be reloaded into memory anymore.

fixes #10791

cmd/erasure-server-sets.go

@@ -1264,17 +1264,6 @@ func (z *erasureServerSets) ListBuckets(ctx context.Context) (buckets []BucketIn
 	return buckets, nil
 }
 
-func (z *erasureServerSets) ReloadFormat(ctx context.Context, dryRun bool) error {
-	// No locks needed since reload happens in HealFormat under
-	// write lock across all nodes.
-	for _, zone := range z.serverSets {
-		if err := zone.ReloadFormat(ctx, dryRun); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
 func (z *erasureServerSets) HealFormat(ctx context.Context, dryRun bool) (madmin.HealResultItem, error) {
 	// Acquire lock on format.json
 	formatLock := z.NewNSLock(ctx, minioMetaBucket, formatConfigFile)
@@ -1306,15 +1295,6 @@ func (z *erasureServerSets) HealFormat(ctx context.Context, dryRun bool) (madmin
 		r.After.Drives = append(r.After.Drives, result.After.Drives...)
 	}
 
-	// Healing succeeded notify the peers to reload format and re-initialize disks.
-	// We will not notify peers if healing is not required.
-	for _, nerr := range globalNotificationSys.ReloadFormat(dryRun) {
-		if nerr.Err != nil {
-			logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
-			logger.LogIf(ctx, nerr.Err)
-		}
-	}
-
 	// No heal returned by all serverSets, return errNoHealRequired
 	if countNoHeal == len(z.serverSets) {
 		return r, errNoHealRequired

cmd/erasure-sets.go

@@ -1141,81 +1141,6 @@ func formatsToDrivesInfo(endpoints Endpoints, formats []*formatErasureV3, sErrs
 	return beforeDrives
 }
 
-// Reloads the format from the disk, usually called by a remote peer notifier while
-// healing in a distributed setup.
-func (s *erasureSets) ReloadFormat(ctx context.Context, dryRun bool) (err error) {
-	storageDisks, errs := initStorageDisksWithErrorsWithoutHealthCheck(s.endpoints)
-	for i, err := range errs {
-		if err != nil && err != errDiskNotFound {
-			return fmt.Errorf("Disk %s: %w", s.endpoints[i], err)
-		}
-	}
-	defer func(storageDisks []StorageAPI) {
-		if err != nil {
-			closeStorageDisks(storageDisks)
-		}
-	}(storageDisks)
-
-	formats, _ := loadFormatErasureAll(storageDisks, false)
-	if err = checkFormatErasureValues(formats, s.setDriveCount); err != nil {
-		return err
-	}
-
-	refFormat, err := getFormatErasureInQuorum(formats)
-	if err != nil {
-		return err
-	}
-
-	s.monitorContextCancel() // turn-off disk monitoring and replace format.
-
-	s.erasureDisksMu.Lock()
-
-	// Replace with new reference format.
-	s.format = refFormat
-
-	// Close all existing disks and reconnect all the disks.
-	for _, disk := range storageDisks {
-		if disk == nil {
-			continue
-		}
-
-		diskID, err := disk.GetDiskID()
-		if err != nil {
-			continue
-		}
-
-		m, n, err := findDiskIndexByDiskID(refFormat, diskID)
-		if err != nil {
-			continue
-		}
-
-		if s.erasureDisks[m][n] != nil {
-			s.erasureDisks[m][n].Close()
-		}
-
-		s.endpointStrings[m*s.setDriveCount+n] = disk.String()
-		if !disk.IsLocal() {
-			// Enable healthcheck disk for remote endpoint.
-			disk, err = newStorageAPI(disk.Endpoint())
-			if err != nil {
-				continue
-			}
-			disk.SetDiskID(diskID)
-		}
-
-		s.erasureDisks[m][n] = disk
-	}
-
-	s.erasureDisksMu.Unlock()
-
-	mctx, mctxCancel := context.WithCancel(GlobalContext)
-	s.monitorContextCancel = mctxCancel
-
-	go s.monitorAndConnectEndpoints(mctx, defaultMonitorConnectEndpointInterval)
-
-	return nil
-}
-
 // If it is a single node Erasure and all disks are root disks, it is most likely a test setup, else it is a production setup.
 // On a test setup we allow creation of format.json on root disks to help with dev/testing.
 func isTestSetup(infos []DiskInfo, errs []error) bool {
@@ -1335,13 +1260,8 @@ func (s *erasureSets) HealFormat(ctx context.Context, dryRun bool) (res madmin.H
 			}
 		}
 
-		// Save formats `format.json` across all disks.
-		if err = saveFormatErasureAllWithErrs(ctx, storageDisks, sErrs, tmpNewFormats); err != nil {
-			return madmin.HealResultItem{}, err
-		}
-
-		refFormat, err = getFormatErasureInQuorum(tmpNewFormats)
-		if err != nil {
+		// Save new formats `format.json` on unformatted disks.
+		if err = saveUnformattedFormat(ctx, storageDisks, tmpNewFormats); err != nil {
 			return madmin.HealResultItem{}, err
 		}
 
@@ -1349,21 +1269,12 @@ func (s *erasureSets) HealFormat(ctx context.Context, dryRun bool) (res madmin.H
 
 		s.erasureDisksMu.Lock()
 
-		// Replace with new reference format.
-		s.format = refFormat
-
-		// Disconnect/relinquish all existing disks, lockers and reconnect the disks, lockers.
-		for _, disk := range storageDisks {
-			if disk == nil {
+		for index, format := range tmpNewFormats {
+			if format == nil {
 				continue
 			}
 
-			diskID, err := disk.GetDiskID()
-			if err != nil {
-				continue
-			}
-
-			m, n, err := findDiskIndexByDiskID(refFormat, diskID)
+			m, n, err := findDiskIndexByDiskID(refFormat, format.Erasure.This)
 			if err != nil {
 				continue
 			}
@@ -1372,18 +1283,12 @@ func (s *erasureSets) HealFormat(ctx context.Context, dryRun bool) (res madmin.H
 				s.erasureDisks[m][n].Close()
 			}
 
-			s.endpointStrings[m*s.setDriveCount+n] = disk.String()
-			if !disk.IsLocal() {
-				// Enable healthcheck disk for remote endpoint.
-				disk, err = newStorageAPI(disk.Endpoint())
-				if err != nil {
-					continue
+			s.erasureDisks[m][n] = storageDisks[index]
+			s.endpointStrings[m*s.setDriveCount+n] = storageDisks[index].String()
 		}
-				disk.SetDiskID(diskID)
-			}
-			s.erasureDisks[m][n] = disk
 
-		}
+		// Replace with new reference format.
+		s.format = refFormat
 
 		s.erasureDisksMu.Unlock()
 

cmd/format-erasure.go

@@ -704,28 +704,18 @@ func initErasureMetaVolumesInLocalDisks(storageDisks []StorageAPI, formats []*fo
 	return nil
 }
 
-// saveFormatErasureAllWithErrs - populates `format.json` on disks in its order.
+// saveUnformattedFormat - populates `format.json` on unformatted disks.
 // also adds `.healing.bin` on the disks which are being actively healed.
-func saveFormatErasureAllWithErrs(ctx context.Context, storageDisks []StorageAPI, fErrs []error, formats []*formatErasureV3) error {
-	g := errgroup.WithNErrs(len(storageDisks))
-
-	// Write `format.json` to all disks.
-	for index := range storageDisks {
-		index := index
-		g.Go(func() error {
-			if formats[index] == nil {
-				return errDiskNotFound
+func saveUnformattedFormat(ctx context.Context, storageDisks []StorageAPI, formats []*formatErasureV3) error {
+	for index, format := range formats {
+		if format == nil {
+			continue
+		}
+		if err := saveFormatErasure(storageDisks[index], format, true); err != nil {
+			return err
 		}
-			if errors.Is(fErrs[index], errUnformattedDisk) {
-				return saveFormatErasure(storageDisks[index], formats[index], true)
 	}
 	return nil
-		}, index)
-	}
-
-	writeQuorum := getWriteQuorum(len(storageDisks))
-	// Wait for the routines to finish.
-	return reduceWriteQuorumErrs(ctx, g.Wait(), nil, writeQuorum)
 }
 
 // saveFormatErasureAll - populates `format.json` on disks in its order.

cmd/fs-v1.go

@@ -1536,12 +1536,6 @@ func (fs *FSObjects) DeleteObjectTags(ctx context.Context, bucket, object string
 	return fs.PutObjectTags(ctx, bucket, object, "", opts)
 }
 
-// ReloadFormat - no-op for fs, Valid only for Erasure.
-func (fs *FSObjects) ReloadFormat(ctx context.Context, dryRun bool) error {
-	logger.LogIf(ctx, NotImplemented{})
-	return NotImplemented{}
-}
-
 // HealFormat - no-op for fs, Valid only for Erasure.
 func (fs *FSObjects) HealFormat(ctx context.Context, dryRun bool) (madmin.HealResultItem, error) {
 	logger.LogIf(ctx, NotImplemented{})

cmd/gateway-unsupported.go

@@ -160,11 +160,6 @@ func (a GatewayUnsupported) DeleteBucketSSEConfig(ctx context.Context, bucket st
 	return NotImplemented{}
 }
 
-// ReloadFormat - Not implemented stub.
-func (a GatewayUnsupported) ReloadFormat(ctx context.Context, dryRun bool) error {
-	return NotImplemented{}
-}
-
 // HealFormat - Not implemented stub
 func (a GatewayUnsupported) HealFormat(ctx context.Context, dryRun bool) (madmin.HealResultItem, error) {
 	return madmin.HealResultItem{}, NotImplemented{}

cmd/notification.go

@@ -140,21 +140,6 @@ func (g *NotificationGroup) Go(ctx context.Context, f func() error, index int, a
 	}()
 }
 
-// ReloadFormat - calls ReloadFormat REST call on all peers.
-func (sys *NotificationSys) ReloadFormat(dryRun bool) []NotificationPeerErr {
-	ng := WithNPeers(len(sys.peerClients))
-	for idx, client := range sys.peerClients {
-		if client == nil {
-			continue
-		}
-		client := client
-		ng.Go(GlobalContext, func() error {
-			return client.ReloadFormat(dryRun)
-		}, idx, *client.host)
-	}
-	return ng.Wait()
-}
-
 // DeletePolicy - deletes policy across all peers.
 func (sys *NotificationSys) DeletePolicy(policyName string) []NotificationPeerErr {
 	ng := WithNPeers(len(sys.peerClients))

cmd/object-api-interface.go

@@ -114,7 +114,6 @@ type ObjectLayer interface {
 	CompleteMultipartUpload(ctx context.Context, bucket, object, uploadID string, uploadedParts []CompletePart, opts ObjectOptions) (objInfo ObjectInfo, err error)
 
 	// Healing operations.
-	ReloadFormat(ctx context.Context, dryRun bool) error
 	HealFormat(ctx context.Context, dryRun bool) (madmin.HealResultItem, error)
 	HealBucket(ctx context.Context, bucket string, dryRun, remove bool) (madmin.HealResultItem, error)
 	HealObject(ctx context.Context, bucket, object, versionID string, opts madmin.HealOpts) (madmin.HealResultItem, error)

cmd/peer-rest-client.go

@@ -456,19 +456,6 @@ func (client *peerRESTClient) DeleteBucketMetadata(bucket string) error {
 	return nil
 }
 
-// ReloadFormat - reload format on the peer node.
-func (client *peerRESTClient) ReloadFormat(dryRun bool) error {
-	values := make(url.Values)
-	values.Set(peerRESTDryRun, strconv.FormatBool(dryRun))
-
-	respBody, err := client.call(peerRESTMethodReloadFormat, values, nil, -1)
-	if err != nil {
-		return err
-	}
-	defer http.DrainBody(respBody)
-	return nil
-}
-
 // cycleServerBloomFilter will cycle the bloom filter to start recording to index y if not already.
 // The response will contain a bloom filter starting at index x up to, but not including index y.
 // If y is 0, the response will not update y, but return the currently recorded information

cmd/peer-rest-common.go

@@ -50,7 +50,6 @@ const (
 	peerRESTMethodLoadGroup              = "/loadgroup"
 	peerRESTMethodStartProfiling         = "/startprofiling"
 	peerRESTMethodDownloadProfilingData  = "/downloadprofilingdata"
-	peerRESTMethodReloadFormat           = "/reloadformat"
 	peerRESTMethodCycleBloom             = "/cyclebloom"
 	peerRESTMethodTrace                  = "/trace"
 	peerRESTMethodListen                 = "/listen"
@@ -72,7 +71,6 @@ const (
 	peerRESTIsGroup     = "is-group"
 	peerRESTSignal      = "signal"
 	peerRESTProfiler    = "profiler"
-	peerRESTDryRun      = "dry-run"
 	peerRESTTraceAll    = "all"
 	peerRESTTraceErr    = "err"
 

cmd/peer-rest-server.go

@@ -578,45 +578,6 @@ func (s *peerRESTServer) LoadBucketMetadataHandler(w http.ResponseWriter, r *htt
 	}
 }
 
-// ReloadFormatHandler - Reload Format.
-func (s *peerRESTServer) ReloadFormatHandler(w http.ResponseWriter, r *http.Request) {
-	if !s.IsValid(w, r) {
-		s.writeErrorResponse(w, errors.New("Invalid request"))
-		return
-	}
-
-	vars := mux.Vars(r)
-	dryRunString := vars[peerRESTDryRun]
-	if dryRunString == "" {
-		s.writeErrorResponse(w, errors.New("dry-run parameter is missing"))
-		return
-	}
-
-	var dryRun bool
-	switch strings.ToLower(dryRunString) {
-	case "true":
-		dryRun = true
-	case "false":
-		dryRun = false
-	default:
-		s.writeErrorResponse(w, errInvalidArgument)
-		return
-	}
-
-	objAPI := newObjectLayerFn()
-	if objAPI == nil {
-		s.writeErrorResponse(w, errServerNotInitialized)
-		return
-	}
-
-	err := objAPI.ReloadFormat(GlobalContext, dryRun)
-	if err != nil {
-		s.writeErrorResponse(w, err)
-		return
-	}
-	w.(http.Flusher).Flush()
-}
-
 // CycleServerBloomFilterHandler cycles bloom filter on server.
 func (s *peerRESTServer) CycleServerBloomFilterHandler(w http.ResponseWriter, r *http.Request) {
 	if !s.IsValid(w, r) {
@@ -1093,7 +1054,6 @@ func registerPeerRESTHandlers(router *mux.Router) {
 
 	subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodStartProfiling).HandlerFunc(httpTraceAll(server.StartProfilingHandler)).Queries(restQueries(peerRESTProfiler)...)
 	subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodDownloadProfilingData).HandlerFunc(httpTraceHdrs(server.DownloadProfilingDataHandler))
-	subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodReloadFormat).HandlerFunc(httpTraceHdrs(server.ReloadFormatHandler)).Queries(restQueries(peerRESTDryRun)...)
 	subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodTrace).HandlerFunc(server.TraceHandler)
 	subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodListen).HandlerFunc(httpTraceHdrs(server.ListenHandler))
 	subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodBackgroundHealStatus).HandlerFunc(server.BackgroundHealStatusHandler)