Please umount the filesystem and rectify the problem(s)

1、输入命令：ls -l /dev/mapper

2、再输入：xfs_repair /dev/dm-0

3.输入命令：xfs_repair -L /dev/dm-0

4、最后进行重启：init 6 等价于 reboot

https://blog.csdn.net/Small_StarOne/article/details/102796845