Perform the following steps to configure additional virtual storage devices for your guest.
Edit your guest configuration file in /etc/xen/YourGuestName replacing YourGuestName with the name of your guest. The original entry may look like the one below.
disk = [ "file:/var/lib/xen/images/rhel5_64_fv.dsk,hda,w"]
Add an additional entry for your new physical device, LUN, partition or volume to the “disk=” section of the configuration file. The storage entity the para-virtualized driver the updated entry would like the following. Note the use of “tap:aio” for the para-virtualized device if a file based image is used.
disk = [ "file:/var/lib/xen/images/rhel5_64_fv.dsk,hda,w",
"tap:aio:/var/lib/xen/images/UserStorage1.dsk,xvda,w" ]
If you want to add more entries just add them to the “disk=” section as a comma separated list
You need to increment the letter for the 'xvd' device, that is for your second storage entity it would be 'xvdb' instead of 'xvda'.
disk = [ "file:/var/lib/xen/images/rhel5_64_fv.dsk,hda,w",
"tap:aio:/var/lib/xen/images/UserStorage1.dsk,xvda,w" ]
"tap:aio:/var/lib/xen/images/UserStorage2.dsk,xvdb,w" ]
Verify the partitions have been created and are available
[root@rhel5]# cat /proc/partitions major minor #blocks name 3 0 10485760 hda 3 1 104391 hda1 3 2 10377990 hda2 202 0 64000 xvda 202 1 64000 xvdb 253 0 8257536 dm-0 253 1 2031616 dm-1
In the above output you can see the partition or device “xvdb” is available to the system
Mount the new devices and disks to local mount points and update the /etc/fstab inside the guest to mount the devices and partitions at boot time.
[root@rhel5]# mkdir /mnt/pvdisk_xvda [root@rhel5]# mkdir /mnt/pvdisk_xvdb [root@rhel5]# mount /dev/xvda /mnt/pvdisk_xvda [root@rhel5]# mount /dev/xvdb /mnt/pvdisk_xvdb [root@rhel5]# df /mnt/pvdisk_p1 Filesystem 1K-blocks Used Available Use% Mounted on /dev/xvda 64000 15 63985 1% /mnt/pvdisk_xvda /dev/xvdb 64000 15 63985 1% /mnt/pvdisk_xvdb