[one-users] cannot migrate virtual machines in one 3.4

[Carlos A.]

Hello,

I am upgrading my ONE 3.2 deployment to ONE 3.4 but I have one problem 
with migration of VM between nodes (not live migration).

When using ONE 3.2 migration was fine, but now migration fails and I 
cannot find how to solve this problem.

I have the default datastore, that it is a "filesystem" based on ssh 
tm_mad (and the system datastore "0").

When I migrate the VM, I find the next vm.log fragment:
------------------------------------------------
Tue Apr 24 16:53:51 2012 [LCM][I]: New VM state is SAVE_MIGRATE
Tue Apr 24 16:53:54 2012 [VMM][I]: ExitCode: 0
Tue Apr 24 16:53:54 2012 [VMM][I]: Successfully execute virtualization 
driver operation: save.
Tue Apr 24 16:53:54 2012 [VMM][I]: ExitCode: 0
Tue Apr 24 16:53:54 2012 [VMM][I]: Successfully execute network driver 
operation: clean.
Tue Apr 24 16:53:54 2012 [LCM][I]: New VM state is PROLOG_MIGRATE
Tue Apr 24 16:53:55 2012 [TM][I]: ExitCode: 0
Tue Apr 24 16:53:55 2012 [TM][I]: ExitCode: 0
Tue Apr 24 16:53:55 2012 [LCM][I]: New VM state is BOOT
Tue Apr 24 16:53:55 2012 [VMM][I]: ExitCode: 0
Tue Apr 24 16:53:55 2012 [VMM][I]: Successfully execute network driver 
operation: pre.
Tue Apr 24 16:53:55 2012 [VMM][I]: Command execution fail: 
/var/tmp/one/vmm/kvm/restore 
/srv/cloud/one/var//datastores/0/2984/checkpoint dellblade03 2984 
dellblade03
------------------------------------------------

And the next transfer.1.migrate file appears
------------------------------------------------
MV ssh dellblade01:/srv/cloud/one/var//datastores/0/2984/disk.0 
dellblade03:/srv/cloud/one/var//datastores/0/2984/disk.0
MV shared dellblade01:/srv/cloud/one/var//datastores/0/2984 
dellblade03:/srv/cloud/one/var//datastores/0/2984
------------------------------------------------

The problem is that the disk.0 file is not transfered to dellblade03. It 
seems that the phase of executing the transference of files is omited.

Moreover the "shared" keyword appears while there is not any shared file 
system (but the system one that should not be considered when moving 
from one host to another). But also the checkpointing file is not moved.

Note: migration from one host to the same host works (as expected). So 
virsh is able to restore the state of a saved VM.

Any idea on this?

Thank you in advance.