开机就进入命令窗口，窗口提示信息如下：
generating “/run/initramfs/rdsosreport.txt” entering emergencymode. exit the shell to continue type “journalctl” to view system logs. you might want to save “/run/initramfs/rdsosreport.txt” to a usb stick or /boot after mounting them and attach it to a bug report。
解决方法：
xfs_repair /dev/mapper/centos-root -L
reboot
引用https://www.cnblogs.com/boazy/p/11638645.html