Hi, in our environment we got pretty good io performance on VM, with following configuration:

lustrebox: /lust mounted on "GATEWAY" over IB
GATEWAY: export /lust as nfs4 on 10G interface
VM(test.vm): import as NFS over 10G interface

[root@test.vm ~]# dd if=/dev/zero bs=128K count=100000
of=/test/tmp/test.tmp
100000+0 records in
100000+0 records out
13107200000 bytes (13 GB) copied, 20.8402 s, 629 MB/s

looks promising for the future deployments.

only one problem remains that on heavy io I get some wornings that the vm network is saturated, are there way to configure the bandwidth limits to 10G for the VM Interface??

thank you beforehand,

Arman.