OVH with cPanel - Server boot failure - plymouth not found, no loopback

I have a problem with a server of mine. After initializing a reboot through OVH Manager, the server won't reboot. Only rescue-pro mode is working. Server admins on their side told me "the server gets stuck during the boot phase, with this message:" http://ift.tt/1FPXO5A

transcription:

Enabling /etc/fstab swaps: 
Adding 16776188k swap on /dev/sda4. Priority:-1 ext ents:1 across:16776188k 
Adding 16776188k swap on /dews., Priority:-2 extents:1 across:16776188k 

/etc/rc.d/rc.sysinit: line 678: plymouth: command not found 
Entering non-interactive startup 
Calling the system activity data collector (sadc)... 
Starting securetmp: Notice Ho loop module detected 
If the loopback block device is built as a module, try running modprobe loop' a s root via ssh and running this script again. If the loopback block device is built into the kernel itself, you can ignore this message. 
Securing /tmp /var/tmp 
Calculating size on /tmp
/tmp calculated to be 40196 M based on available disk space in /usr 
Everything looks good with your /tmp. Its the right size and ready to go. 
Setting up /tmp... 
usb 3-2: new low-speed USD device number 2 using ohci_hcd 
input: USBPS2 as /devices/pci0000:00/0000:00:12.0/usb3/3-2/3-2:1.0/input/input2 hid-generic 0003:0D3D:0001.0003: input: USB HID v1.00 Keyboard [USBPS2] on usb-0 000:00:12.0-2/input0
input: USBPS2 as /devices/pci0000:00/0000:00:12.0/usb3/3-2/3-2:1.1/input/input3 hid-generic 0003:0D3D:0001.0010: input: USB HID v1.00 Mouse [USBPS2] on usb-0000:00:12.0-2/input1

I can't make anything out of it though. What is the problem here? The loopback block device? plymouth? Maybe even something wrong with the USB devices?

Im using centOS 6.6

Here's the dmesg of what happens prior to what you can see in the screenshot: http://ift.tt/1FPXO5F

Thank you in advance.