Don't remove all MPUs on start

It was a bad idea, because GeeseFS may be not the only user of the bucket :-)

internal/backend_s3.go

@@ -1086,17 +1086,25 @@ func (s *S3Backend) MultipartExpire(param *MultipartExpireInput) (*MultipartExpi
 	}
 	s3Log.Debug(mpu)
 
+	now := time.Now()
 	for _, upload := range mpu.Uploads {
-		// FIXME: Maybe keep parts with known etags if we load them from disk
-		params := &s3.AbortMultipartUploadInput{
-			Bucket:   &s.bucket,
-			Key:      upload.Key,
-			UploadId: upload.UploadId,
-		}
-		resp, err := s.AbortMultipartUpload(params)
-		s3Log.Debug(resp)
-		if mapAwsError(err) == syscall.EACCES {
-			break
+		expireTime := upload.Initiated.Add(48 * time.Hour)
+
+		if !expireTime.After(now) {
+			// FIXME: Maybe keep parts with known etags if we load them from disk
+			params := &s3.AbortMultipartUploadInput{
+				Bucket:   &s.bucket,
+				Key:      upload.Key,
+				UploadId: upload.UploadId,
+			}
+			resp, err := s.AbortMultipartUpload(params)
+			s3Log.Debug(resp)
+
+			if mapAwsError(err) == syscall.EACCES {
+				break
+			}
+		} else {
+			s3Log.Debugf("Keeping MPU Key=%v Id=%v", *upload.Key, *upload.UploadId)
 		}
 	}