feat: Small object optimization read data in single bulk call (#11207)

cmd/server-main.go

@@ -40,6 +40,7 @@ import (
 	"github.com/minio/minio/pkg/certs"
 	"github.com/minio/minio/pkg/color"
 	"github.com/minio/minio/pkg/env"
+	"github.com/minio/minio/pkg/madmin"
 )
 
 // ServerFlags - server command specific flags
@@ -217,9 +218,7 @@ func newAllSubsystems() {
 
 func initServer(ctx context.Context, newObject ObjectLayer) error {
 	// Once the config is fully loaded, initialize the new object layer.
-	globalObjLayerMutex.Lock()
-	globalObjectAPI = newObject
-	globalObjLayerMutex.Unlock()
+	setObjectLayer(newObject)
 
 	// Make sure to hold lock for entire migration to avoid
 	// such that only one server should migrate the entire config
@@ -319,6 +318,15 @@ func initAllSubsystems(ctx context.Context, newObject ObjectLayer) (err error) {
 		return fmt.Errorf("Unable to list buckets to heal: %w", err)
 	}
 
+	if globalIsErasure {
+		logger.Info(fmt.Sprintf("Verifying %d buckets are consistent across drives...", len(buckets)))
+		for _, bucket := range buckets {
+			if _, err = newObject.HealBucket(ctx, bucket.Name, madmin.HealOpts{}); err != nil {
+				return fmt.Errorf("Unable to list buckets to heal: %w", err)
+			}
+		}
+	}
+
 	// Initialize config system.
 	if err = globalConfigSys.Init(newObject); err != nil {
 		if errors.Is(err, errDiskNotFound) ||
@@ -433,9 +441,7 @@ func serverMain(ctx *cli.Context) {
 		globalHTTPServerErrorCh <- httpServer.Start()
 	}()
 
-	globalObjLayerMutex.Lock()
-	globalHTTPServer = httpServer
-	globalObjLayerMutex.Unlock()
+	setHTTPServer(httpServer)
 
 	if globalIsDistErasure && globalEndpoints.FirstLocal() {
 		for {
@@ -489,9 +495,7 @@ func serverMain(ctx *cli.Context) {
 		cacheAPI, err = newServerCacheObjects(GlobalContext, globalCacheConfig)
 		logger.FatalIf(err, "Unable to initialize disk caching")
 
-		globalObjLayerMutex.Lock()
-		globalCacheObjectAPI = cacheAPI
-		globalObjLayerMutex.Unlock()
+		setCacheObjectLayer(cacheAPI)
 	}
 
 	// Initialize users credentials and policies in background right after config has initialized.