最近重启了esxi上的一台服务器，重启后很长时间进入不了系统，提示dracut-initqueue timeout

重启前未做过相关补丁升级，于是判断为引导出现问题

报错内容大致如下：
Warning: /dev/centos/root does not exist Warning: /dev/centos/swap does not exist Warning: /dev/mapper/centos-root does not exist Generating "/run/initramfs/rdsosreport.txt"

|---------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | 1 2 3 4 | Warning: /dev/centos/root does not exist Warning: /dev/centos/swap does not exist Warning: /dev/mapper/centos-root does not exist Generating "/run/initramfs/rdsosreport.txt" |

解决办法：

重启服务器，在选择引导项，选择CentOS Linx(0-rescue-xxx) 7 (Core)启动，启动完成后就可以进入系统。

进入boot目录执行重建操作，即
cd /boot dracut -f initramfs-3.10.0-1127.el7.x86_64.img reboot

|-------|----------------------------------------------------------------| | 1 2 3 | cd /boot dracut -f initramfs-3.10.0-1127.el7.x86_64.img reboot |

重启后恢复正常