Script to attach USB disks to XenServer VM Guests

This script will map USB devices to VMs

Written by Artur Neumann with the concepts, ideas & code taken from Ez-Aton, http://run.tournament.org.il and http://jamesscanlonitkb.wordpress.com/2012/03/11/xenserver-mount-usb-from-host/ and http://support.citrix.com/article/CTX118198

REMOVABLE_SR_UUID=e0f6f5bd-ffc3-0e32-0920-267dfaa2dbf6

the UUID of your Removable storage SR

to get this id run: xe sr-list name-label="Removable storage" or open the "Removable storage node" of your Xen Server in XenCenter

VMS="a67efae7-9f36-8f10-b97d-42db26eceb4a:44B177D6601C:1 
     a67efae7-9f36-8f10-b97d-42db26eceb4a:8D35DAGF:2
     fced1b73-d8db-a900-1f1c-a7f6e077327b:AA011222140422474326:sdb"

List of VMs,USB IDs & device names inside the VM

multiple VMs are separated by space or space+new line

Format: "VM_ID:USB_ID:Device_Name"

To get the VM_ID run xe vm-list

To get the USB_ID run lsusb -v and watch out for "iSerial"

  Bus 006 Device 004: ID 0781:5580 SanDisk Corp.
  ...
   iSerial                 3 AA011222140422474326

or plug in the device into a Windows Computer, start the Device Manager under "Universal Serial Bus controllers" find the correct "USB Mass Storage Device" open its Properties and select the "Details" tab. Here you have to select the "Device Instance Path" Property you will see a Value like: "USB\VID_8403&PID_1000\AA011222140422474326" the USB_ID is the bit after the last "" in this case "AA011222140422474326"

Device Names are numbers in case of Windows VMs (1=Disk 1,2=Disk 2, etc) or the UNIX like device names in case of a UNIX VM (hdb, hdc, sdb, sdc, etc)

XE=/opt/xensource/bin/xe

Full path to the "xe" tool