Issue

• 以下のように dracut-initqueue がタイムアウトになると、Red Hat Enterprise Linux 7.2 が dracut シェルで起動するのはなぜですか?

[  193.845250]  dracut-initqueue[779]:Warning: dracut-initqueue timeout - starting timeout scripts
[  194.368782]  dracut-initqueue[779]:Warning: dracut-initqueue timeout - starting timeout scripts
[  194.892204]  dracut-initqueue[779]:Warning: dracut-initqueue timeout - starting timeout scripts
[  195.415864]  dracut-initqueue[779]:Warning: dracut-initqueue timeout - starting timeout scripts
[  195.939551]  dracut-initqueue[779]:Warning: dracut-initqueue timeout - starting timeout scripts
[  196.463255]  dracut-initqueue[779]:Warning: dracut-initqueue timeout - starting timeout scripts
[  196.986925]  dracut-initqueue[779]:Warning: dracut-initqueue timeout - starting timeout scripts
[  197.510425]  dracut-initqueue[779]:Warning: dracut-initqueue timeout - starting timeout scripts
[  198.033977]  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.
[  200.157579]  systemd[1]:Received SIGRTMIN+20 from PID 782 (plymouthd).
[  200.161146]  dracut-initqueue[779]:Warning:/dev/vgswap/swap does not exist
[  200.170895]  systemd[1]:Starting Dracut Emergency Shell...
[  200.198123]  systemd[1]:Received SIGRTMIN+21 from PID 782 (plymouthd)