Issue

• System doesn't boot and hangs with following messages after removing /dev/mapper/vg00-usr lv and reboot.

[  134.030401] rhel7-alpha dracut-initqueue[262]: Warning: dracut-initqueue timeout - starting timeout scripts
[  134.802320] rhel7-alpha dracut-initqueue[262]: Warning: dracut-initqueue timeout - starting timeout scripts
[  135.357831] rhel7-alpha dracut-initqueue[262]: Warning: dracut-initqueue timeout - starting timeout scripts

[  200.860633] rhel7-alpha  dracut-initqueue[262]: Warning: Could not boot.
[  200.919676] rhel7-alpha systemd[1]: Received SIGRTMIN+20 from PID 263 (plymouthd).

[  200.923243] rhel7-alpha dracut-initqueue[262]: Warning: /dev/vg00/usr does not exist

• Followed below steps to remove /dev/mapper/vg00-usr lv

- boot system to rescue mode
$ mount /dev/mapper/vg00-root /mnt
$ mkdir /mnt/user2
$ mount /dev/mapper/vg00-usr /mnt/usr2
$ mv /mnt/usr2/* /mnt/usr/ 
- rebooted system and it comes up properly.
- then verified that lv is not in open starte using `lvs` and removed lv using `lvremove`.
$ lvrmeove /dev/mapper/vg00-usr