Again!!! (my message got cut off) soft,nosharecache (this was commented out)' to  nfs_mount_options = soft,nosharecache,vers=3 - then re attached the node - it now shows as nfs3 using the  mount command  and has the correct UID/GID i.e ls -al /rhev/data-center/b2b2e054-66b2-11e1-bda3-1728f784de9e/2f7ee7bc-09b3-42ba-af91-40d79293e360/images/7e2f025e-5676-4592-84fd-7c9661f5ee2e/ total 2097168 drwxr-xr-x. 2 vdsm kvm       4096 Mar 28 15:23 . drwxr-xr-x. 3 vdsm kvm       4096 Mar 28 15:23 .. -rw-rw----. 1 vdsm kvm 2147483648 Mar 28 15:23 e4aa8bf8-0cb8-4f1c-84cf-b83909f7206b -rw-r--r--. 1 vdsm kvm        320 Mar 28 15:23 e4aa8bf8-0cb8-4f1c-84cf-b83909f7206b.meta It still doesn't work... ---------- Forwarded message ---------- From: Morgan Cox <morgancoxuk(a)gmail.com&gt; Date: 29 March 2012 10:56 Subject: Re: [Users] (potential bug) After I create a virtual disk I am unable to start a VM - Permissions issue ? The node seems to have no write access to the directory on the NFS server... To: Keith Robertson <kroberts(a)redhat.com&gt; Again!!! (my message got cut off) soft,nosharecache (this was commented out)' to  nfs_mount_options = soft,nosharecache,vers=3 - then re attached the node - it now shows as nfs3 using the  mount command  and has the correct UID/GID i.e ls -al /rhev/data-center/b2b2e054-66b2-11e1-bda3-1728f784de9e/2f7ee7bc-09b3-42ba-af91-40d79293e360/images/7e2f025e-5676-4592-84fd-7c9661f5ee2e/  total 2097168  drwxr-xr-x. 2 vdsm kvm       4096 Mar 28 15:23 .  drwxr-xr-x. 3 vdsm kvm       4096 Mar 28 15:23 ..  -rw-rw----. 1 vdsm kvm 2147483648 Mar 28 15:23 e4aa8bf8-0cb8-4f1c-84cf-b83909f7206b  -rw-r--r--. 1 vdsm kvm        320 Mar 28 15:23 e4aa8bf8-0cb8-4f1c-84cf-b83909f7206b.meta It still doesn't work... Cheers