bugfix: reduce error logs when download home dir not exist

supernode/daemon/mgr/cdn/cache_detector.go

@@ -24,6 +24,7 @@ import (
 	"github.com/dragonflyoss/Dragonfly/supernode/httpclient"
 	"github.com/dragonflyoss/Dragonfly/supernode/store"
 
+	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 )
 
@@ -59,7 +60,7 @@ func (cd *cacheDetector) detectCache(ctx context.Context, task *types.TaskInfo)
 
 	if breakNum == 0 {
 		if metaData, err = cd.resetRepo(ctx, task); err != nil {
-			return 0, nil, err
+			return 0, nil, errors.Wrapf(err, "failed to reset repo")
 		}
 	} else {
 		logrus.Debugf("start to update access time with taskID(%s)", task.ID)
@@ -120,7 +121,7 @@ func (cd *cacheDetector) parseBreakNumByCheckFile(ctx context.Context, taskID st
 func (cd *cacheDetector) resetRepo(ctx context.Context, task *types.TaskInfo) (*fileMetaData, error) {
 	logrus.Infof("reset repo for taskID: %s", task.ID)
 	if err := deleteTaskFiles(ctx, cd.cacheStore, task.ID); err != nil {
-		return nil, err
+		logrus.Errorf("reset repo: failed to delete task(%s) files: %v", task.ID, err)
 	}
 
 	return cd.metaDataManager.writeFileMetaDataByTask(ctx, task)

supernode/daemon/mgr/cdn/cdn_gc.go

@@ -29,6 +29,7 @@ import (
 
 	"github.com/emirpasic/gods/maps/treemap"
 	godsutils "github.com/emirpasic/gods/utils"
+	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 )
 
@@ -41,7 +42,10 @@ func (cm *Manager) GetGCTaskIDs(ctx context.Context, taskMgr mgr.TaskMgr) ([]str
 
 	freeDisk, err := cm.cacheStore.GetAvailSpace(ctx, getHomeRawFunc())
 	if err != nil {
-		return nil, err
+		if store.IsKeyNotFound(err) {
+			return nil, nil
+		}
+		return nil, errors.Wrapf(err, "failed to get avail space")
 	}
 	if freeDisk > cm.cfg.YoungGCThreshold {
 		return nil, nil

supernode/store/local_storage.go

@@ -309,7 +309,7 @@ func (ls *localStorage) statPath(bucket, key string) (string, os.FileInfo, error
 	f, err := os.Stat(filePath)
 	if err != nil {
 		if os.IsNotExist(err) {
-			return "", nil, errors.Wrapf(ErrKeyNotFound, "key: %s", key)
+			return "", nil, errors.Wrapf(ErrKeyNotFound, "bucket(%s) key(%s)", bucket, key)
 		}
 		return "", nil, err
 	}