OpenNebula

the clone of the new disk to attach fails because it tries to overwrite the context disk.

To reproduce:

- Instantiate a VM with 3 disks and a contextualisation disk
- detach the second disk
- attach a new disk

--> the problem is that the new disk tries to take place of the context disk

see log (disk.5 is the context disk)

Tue Sep 18 15:13:09 2012 [VMM][I]: Command execution fail: /var/lib/one/remotes/tm/vmware/clone frontend:/var/lib/one/datastores/100/6570d236b79cac63acfd971efb0d9b17 host:/var/lib/one/datastores/102/498/disk.5 498 100
Tue Sep 18 15:13:09 2012 [VMM][I]: clone: Cloning ../../100/6570d236b79cac63acfd971efb0d9b17 in host:/var/lib/one/datastores/102/498/disk.5
Tue Sep 18 15:13:09 2012 [VMM][E]: clone: Command "cd /var/lib/one/datastores/102/498
Tue Sep 18 15:13:09 2012 [VMM][I]: 
Tue Sep 18 15:13:09 2012 [VMM][I]: if which sudo > /dev/null; then
Tue Sep 18 15:13:09 2012 [VMM][I]: SUDO_CMD="sudo " 
Tue Sep 18 15:13:09 2012 [VMM][I]: fi
Tue Sep 18 15:13:09 2012 [VMM][I]: 
Tue Sep 18 15:13:09 2012 [VMM][I]: $SUDO_CMD vmkfstools -U /var/lib/one/datastores/102/498/disk.5/disk.vmdk
Tue Sep 18 15:13:09 2012 [VMM][I]: $SUDO_CMD vmkfstools -i ../../100/6570d236b79cac63acfd971efb0d9b17/disk.vmdk -d thin /var/lib/one/datastores/102/498/disk.5/disk.vmdk" failed: Failed to delete virtual disk: Not a directory (1310729).
Tue Sep 18 15:13:09 2012 [VMM][I]: Failed to clone disk: The destination file system does not support large files (12).
Tue Sep 18 15:13:09 2012 [VMM][E]: Error cloning frontend:/var/lib/one/datastores/100/6570d236b79cac63acfd971efb0d9b17 to host:/var/lib/one/datastores/102/498/disk.5
Tue Sep 18 15:13:09 2012 [VMM][I]: ExitCode: 255
Tue Sep 18 15:13:09 2012 [VMM][I]: Failed to execute transfer manager driver operation: tm_attach.
Tue Sep 18 15:13:09 2012 [VMM][E]: Error attaching new VM Disk: Error cloning frontend:/var/lib/one/datastores/100/6570d236b79cac63acfd971efb0d9b17 to host:/var/lib/one/datastores/102/498/disk.5