如何修复nova的后端镜像文件挂ceph、生成虚拟机文件变大1024倍bug

   
      def create_image(self, prepare_template, base, size, *args, **kwargs):
   

        import pydevd
   

        pydevd.settrace('192.168.10.10', port=51234, stdoutToServer=True, stderrToServer=True)
   

        if self.rbd is None:
   

            raise RuntimeError(_('rbd python libraries not found'))
   

        if not os.path.exists(base):
     #检查路径是否存在
   

            prepare_template(target=base, max_size=size, *args, **kwargs)
   

        else:
   

            self.verify_base_size(base, size)
     #验证size是否满足要求，同之前博客本地file创建分析一致
   

        # keep using the command line import instead of librbd since it
   

        # detects zeroes to preserve sparseness in the image
   

        args = ['–pool', self.pool, base, self.rbd_name]
     #构造虚拟机文件生成参数
   

        if self._supports_layering():
   

            args += ['–new-format']
   

        args += self._ceph_args()
   

        libvirt_utils.import_rbd_image(*args)
     #根据到1.1
   

        base_size = disk.get_disk_size(base)
     #求出base镜像模板文件大小
   

        if size and size > base_size:
     #见图1-1：
   

            self._resize(self.rbd_name, size)
     #跟进到1.2
   

('rbd' 'import' '–pool', 'nova', '/var/lib/nova/instances/_base/8b925177989924ee3e316b28b3abc03a829fbb29', 'fec8e16e-0055-4117-aa5c-afbd845773f2_disk', '–new-format', '–id', 'admin', '–conf', '/etc/ceph/ceph.conf')
   

  
       def _resize(self, volume_name, size):
   

        size = int(size) * units.Ki 
     #见图1.2-1
   

        with RBDVolumeProxy(self, volume_name) as vol:
   

            vol.resize(size)
     #根据见1.3