Send the lower level error directly from GetDiskID() (#10095)

this is to detect situations of corruption disk
format etc errors quickly and keep the disk online
in such scenarios for requests to fail appropriately.

cmd/erasure-healing.go

@@ -212,10 +212,10 @@ func shouldHealObjectOnDisk(erErr, dataErr error, meta FileInfo, quorumModTime t
 		}...) {
 			return true
 		}
-		if meta.XLV1 {
+		if !quorumModTime.Equal(meta.ModTime) {
 			return true
 		}
-		if !quorumModTime.Equal(meta.ModTime) {
+		if meta.XLV1 {
 			return true
 		}
 	}
@@ -368,6 +368,11 @@ func (er erasureObjects) healObject(ctx context.Context, bucket string, object s
 		partsMetadata[i] = cleanFileInfo(latestMeta)
 	}
 
+	dataDir := latestMeta.DataDir
+	if latestMeta.XLV1 {
+		dataDir = migrateDataDir
+	}
+
 	if !latestMeta.Deleted {
 		result.DataBlocks = latestMeta.Erasure.DataBlocks
 		result.ParityBlocks = latestMeta.Erasure.ParityBlocks
@@ -399,7 +404,7 @@ func (er erasureObjects) healObject(ctx context.Context, bucket string, object s
 					continue
 				}
 				checksumInfo := partsMetadata[i].Erasure.GetChecksumInfo(partNumber)
-				partPath := pathJoin(object, latestMeta.DataDir, fmt.Sprintf("part.%d", partNumber))
+				partPath := pathJoin(object, dataDir, fmt.Sprintf("part.%d", partNumber))
 				if latestMeta.XLV1 {
 					partPath = pathJoin(object, fmt.Sprintf("part.%d", partNumber))
 				}
@@ -410,10 +415,7 @@ func (er erasureObjects) healObject(ctx context.Context, bucket string, object s
 				if disk == OfflineDisk {
 					continue
 				}
-				partPath := pathJoin(tmpID, latestMeta.DataDir, fmt.Sprintf("part.%d", partNumber))
-				if latestMeta.XLV1 {
-					partPath = pathJoin(tmpID, migrateDataDir, fmt.Sprintf("part.%d", partNumber))
-				}
+				partPath := pathJoin(tmpID, dataDir, fmt.Sprintf("part.%d", partNumber))
 				writers[i] = newBitrotWriter(disk, minioMetaTmpBucket, partPath, tillOffset, DefaultBitrotAlgorithm, erasure.ShardSize())
 			}
 			err = erasure.Heal(ctx, readers, writers, partSize)
@@ -437,9 +439,7 @@ func (er erasureObjects) healObject(ctx context.Context, bucket string, object s
 					continue
 				}
 
-				if partsMetadata[i].XLV1 {
-					partsMetadata[i].DataDir = migrateDataDir
-				}
+				partsMetadata[i].DataDir = dataDir
 				partsMetadata[i].AddObjectPart(partNumber, "", partSize, partActualSize)
 				partsMetadata[i].Erasure.AddChecksumInfo(ChecksumInfo{
 					PartNumber: partNumber,
@@ -465,13 +465,13 @@ func (er erasureObjects) healObject(ctx context.Context, bucket string, object s
 	}
 
 	// Rename from tmp location to the actual location.
-	for _, disk := range outDatedDisks {
+	for i, disk := range outDatedDisks {
 		if disk == OfflineDisk {
 			continue
 		}
 
 		// Attempt a rename now from healed data to final location.
-		if err = disk.RenameData(minioMetaTmpBucket, tmpID, partsMetadata[0].DataDir, bucket, object); err != nil {
+		if err = disk.RenameData(minioMetaTmpBucket, tmpID, partsMetadata[i].DataDir, bucket, object); err != nil {
 			if err != errIsNotRegular && err != errFileNotFound {
 				logger.LogIf(ctx, err)
 			}

cmd/erasure-zones.go

@@ -1940,13 +1940,21 @@ func (z *erasureZones) HealObjects(ctx context.Context, bucket, prefix string, o
 }
 
 func (z *erasureZones) HealObject(ctx context.Context, bucket, object, versionID string, opts madmin.HealOpts) (madmin.HealResultItem, error) {
+	lk := z.NewNSLock(ctx, bucket, object)
+	if bucket == minioMetaBucket {
+		// For .minio.sys bucket heals we should hold write locks.
+		if err := lk.GetLock(globalHealingTimeout); err != nil {
+			return madmin.HealResultItem{}, err
+		}
+		defer lk.Unlock()
+	} else {
 		// Lock the object before healing. Use read lock since healing
 		// will only regenerate parts & xl.meta of outdated disks.
-	lk := z.NewNSLock(ctx, bucket, object)
 		if err := lk.GetRLock(globalHealingTimeout); err != nil {
 			return madmin.HealResultItem{}, err
 		}
 		defer lk.RUnlock()
+	}
 
 	if z.SingleZone() {
 		return z.zones[0].HealObject(ctx, bucket, object, versionID, opts)

cmd/format-disk-cache.go

@@ -131,30 +131,12 @@ func createFormatCache(fsFormatPath string, format *formatCacheV1) error {
 // of format cache config
 func initFormatCache(ctx context.Context, drives []string) (formats []*formatCacheV2, err error) {
 	nformats := newFormatCacheV2(drives)
-	for _, drive := range drives {
-		_, err = os.Stat(drive)
-		if err == nil {
-			continue
-		}
-		if !os.IsNotExist(err) {
-			logger.GetReqInfo(ctx).AppendTags("drive", drive)
-			logger.LogIf(ctx, err, logger.Application)
-			return nil, err
-		}
-		if err = os.Mkdir(drive, 0777); err != nil {
-			logger.GetReqInfo(ctx).AppendTags("drive", drive)
-			logger.LogIf(ctx, err, logger.Application)
-			return nil, err
-		}
-	}
 	for i, drive := range drives {
-		if err = os.Mkdir(pathJoin(drive, minioMetaBucket), 0777); err != nil {
-			if !os.IsExist(err) {
+		if err = os.MkdirAll(pathJoin(drive, minioMetaBucket), 0777); err != nil {
 			logger.GetReqInfo(ctx).AppendTags("drive", drive)
 			logger.LogIf(ctx, err)
 			return nil, err
 		}
-		}
 		cacheFormatPath := pathJoin(drive, minioMetaBucket, formatConfigFile)
 		// Fresh disk - create format.json for this cfs
 		if err = createFormatCache(cacheFormatPath, nformats[i]); err != nil {

cmd/storage-rest-client.go

@@ -103,6 +103,8 @@ func toStorageErr(err error) error {
 		return io.ErrUnexpectedEOF
 	case errDiskStale.Error():
 		return errDiskNotFound
+	case errDiskNotFound.Error():
+		return errDiskNotFound
 	}
 	return err
 }

cmd/storage-rest-server.go

@@ -114,14 +114,20 @@ func (s *storageRESTServer) IsValid(w http.ResponseWriter, r *http.Request) bool
 		return true
 	}
 	storedDiskID, err := s.storage.GetDiskID()
-	if err == nil && diskID == storedDiskID {
-		// If format.json is available and request sent the right disk-id, we allow the request
-		return true
+	if err != nil {
+		s.writeErrorResponse(w, err)
+		return false
 	}
+
+	if diskID != storedDiskID {
 		s.writeErrorResponse(w, errDiskStale)
 		return false
 	}
 
+	// If format.json is available and request sent the right disk-id, we allow the request
+	return true
+}
+
 // HealthHandler handler checks if disk is stale
 func (s *storageRESTServer) HealthHandler(w http.ResponseWriter, r *http.Request) {
 	s.IsValid(w, r)

cmd/xl-storage.go

@@ -509,7 +509,7 @@ func (s *xlStorage) GetDiskID() (string, error) {
 		if os.IsNotExist(err) {
 			_, err = os.Stat(s.diskPath)
 			if err == nil {
-				// Disk is present by missing `format.json`
+				// Disk is present but missing `format.json`
 				return "", errUnformattedDisk
 			}
 			if os.IsNotExist(err) {
@@ -2112,7 +2112,7 @@ func (s *xlStorage) RenameData(srcVolume, srcPath, dataDir, dstVolume, dstPath s
 		}
 		legacyDataPath := pathJoin(dstVolumeDir, dstPath, legacyDataDir)
 		// legacy data dir means its old content, honor system umask.
-		if err = os.Mkdir(legacyDataPath, 0777); err != nil {
+		if err = os.MkdirAll(legacyDataPath, 0777); err != nil {
 			if isSysErrIO(err) {
 				return errFaultyDisk
 			}
@@ -2133,11 +2133,11 @@ func (s *xlStorage) RenameData(srcVolume, srcPath, dataDir, dstVolume, dstPath s
 				}
 				return osErrToFileErr(err)
 			}
+		}
 
 		// Sync all the metadata operations once renames are done.
 		globalSync()
 	}
-	}
 
 	var oldDstDataPath string
 	if fi.VersionID == "" {