Jonathan Arbib » volume uuid xen http://arbib.it Mzee mulimu; A bit of my work, life, and experiences. Wed, 09 May 2012 11:51:51 +0000 en hourly 1 http://wordpress.org/?v=3.3.2 Volume by UUID and adding the disk to a xen Virtual Machine http://arbib.it/2010/05/08/volume-by-uuid-and-adding-the-disk-to-a-xen-virtual-machine/ http://arbib.it/2010/05/08/volume-by-uuid-and-adding-the-disk-to-a-xen-virtual-machine/#comments Sat, 08 May 2010 20:36:44 +0000 ac3bf1 http://arbib.it/?p=592 Get the drive UUID by using the command vold_id

vol_id /dev/sda1

The string after “ID_FS_UUID=” is the UUID of the drive. Now open your /etc/fstab file and add the following line to the end. Replace the UUID string with your string, your mount point, and customize the other parameters if needed.

UUID=THE-UUID-HERE   /mnt/USBDrive   ext3   user,auto,rw   0   0

To then pass a disk to a xen virtual machine, look at the following lines of the domain config file:

disk        = [
#...root partition and other partitions here...
'phy:/dev/disk/by-uuid/89b976bc-2f66-4b93-abfb-358d6227f8be,sda,w',
'phy:/dev/disk/by-uuid/1871b9a1-8055-4392-8a94-f5407ff37483,sdb,w',
]

basically instead of passing the disk as a /dev/sda1 device, pass it by UUID using the path:

/dev/disk/by-uuid/<the uuid>

Enjoy!

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