运行还原_to命令后、ONTAP还原显示为停滞状态

• 在使用-d选项从nandeshell运行rest_to后、不会再显示任何输出、并且此过程会停滞(可能持续数天)：

cluster1-01> revert_to -d 9.13

You are about to revert the system to work with Data ONTAP 9.13
The system will be rebooted immediately after the conversion
process completes. Make sure that you have installed Data ONTAP
9.13 onto the boot device, or you will have to run "revert_to" again.

Are you sure you want to proceed? [yes/no]? yes

debug.nodewatchdog.level: 2 -> 2
Flash Cache PCS is not active and cannot be configured.
<no further output>