Systems using the USB-UHCI device driver with the USB 2.0 interface cause the ESX Server to show a false warning...
message during the boot sequence. The error looks like this on boot-up:
Mar 29 11:04:10 vmserver1 rc.sysinit: Initializing USB controller (usb-uhci): succeeded
Mar 29 11:04:10 vmserver1 modprobe: Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters
Mar 29 11:04:10 vmserver1 modprobe: /lib/modules/2.4.9-vmnix2/kernel/drivers/usb/usb-ohci.o: init_module: No such device
Mar 29 11:04:10 vmserver1 modprobe: /lib/modules/2.4.9-vmnix2/kernel/drivers/usb/usb-ohci.o: insmod /lib/modules/2.4.9-vmnix2/kernel/drivers/usb/usb-ohci.o failed
Mar 29 11:04:10 vmserver1 modprobe: /lib/modules/2.4.9-vmnix2/kernel/drivers/usb/usb-ohci.o: insmod usb-ohci failed
Mar 29 11:04:10 vmserver1 rc.sysinit: Initializing USB controller (usb-ohci): failed
It is safe to ignore this message, but if you want to configure your system so that this warning does not appear the next time you boot your ESX Server machine, follow these steps
Link: Answer ID 1659
Here are a few more articles related to USB and IRQ sharing which you might find interesting:
If you want to use a USB hard-drive to copy files from the ESX server to it – and you have these errors -then a general work around is to boot to a Knoppix Boot CD and do it that way. Remember if you are copying virtual disks – these will have to be exported to the COW format first.
If you have no errors like me then this is how you can go about using USB hard-drives and devices