RHEL 在引导时一直输出 "dracut-initqueue timeout - starting timeout scripts" 信息

Issue

• 在引导过程中一直输出 "dracut-initqueue timeout - starting timeout scripts" 信息，然后启动了一个 Emergency shell ：

  [  193.845250]  dracut-initqueue[779]: Warning: dracut-initqueue timeout - starting timeout scripts
  [...]
  [  198.557262]  dracut-initqueue[779]: Warning: dracut-initqueue timeout - starting timeout scripts
  [  198.557679]  dracut-initqueue[779]: Warning: Could not boot.
  [  200.161146]  dracut-initqueue[779]: Warning: /dev/vgroot/root does not exist
  [  200.170895]  systemd[1]: Starting Dracut Emergency Shell...
  

• 在引导过程中一直输出 "dracut-initqueue timeout - starting timeout scripts" 信息，然后引导过程继续进行 ：

  [  193.845250]  dracut-initqueue[779]: Warning: dracut-initqueue timeout - starting timeout scripts
  [...]
  [  198.557262]  dracut-initqueue[779]: Warning: dracut-initqueue timeout - starting timeout scripts
  [...]
  ... Boot continues ...
  

• 关闭命令 reboot -r 或 shutdown -r 需要非常长的时间才能完成，或永远不会成功重启

• 在更新到最新的内核后，系统无法正常引导，但使用旧内核可以正常工作。显示以下错误：

  dracut-initqueue timeout could not boot