Error: Partition(s) 3 on /dev/sda have been written, but we have been unable to inform the kernel of the change, probably because it/they are in use. As a result, the old partition(s) will remain in use. You should reboot now before **ng further changes.
执行 partprobe /dev/sda 这个报错了，然后重启后，分区下的md127就没了，OS里显示存储空间丢失。 只能删了重新创建了.... 还好本身里面资料不重要。