I saw an old question posted here : https://answers.launchpad.net/nova/+question/164689
But I am not trying live migration. I have nfs mounted instances_path - so when I try to spawn an instance I run into the above errors. Especially following : File "/usr/lib/python2.7/dist-packages/libvirt.py", line 372, in createWithFlags 40842 2012-04-03 05:42:27 TRACE nova.rpc.amqp if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self) 40843 2012-04-03 05:42:27 TRACE nova.rpc.amqp libvirtError: internal error Process exited while reading console log output: chardev: opening backend "file" failed But as you can see below, several files are created in this folder, so I am not sure if mine if permissions issue (Else none of the files would get created) The problem is reported when libvirt tries to write to console.log (File itself is created with correct permissions - just that this is zero byte file) mandar@ubuntu-dev-mandar:/nfs_shared_instances_path/instance-00000005$ ll total 10944 drwxrwxr-x 2 mandar libvirtd 4096 2012-04-03 05:42 ./ drwxrwxrwx 4 root root 4096 2012-04-03 05:42 ../ -rw-rw---- 1 mandar libvirtd 0 2012-04-03 05:42 console.log -rw-r--r-- 1 mandar libvirtd 6291968 2012-04-03 05:42 disk -rw-rw-r-- 1 mandar libvirtd 4731440 2012-04-03 05:42 kernel -rw-rw-r-- 1 mandar libvirtd 1067 2012-04-03 05:42 libvirt.xml -rw-rw-r-- 1 mandar libvirtd 2254249 2012-04-03 05:42 ramdisk I'm suspecting : https://bugs.launchpad.net/ubuntu/maverick/+source/libvirt/+bug/632696 But I the above doesn't show itself in non-NFS setup Please suggest !!! -Mandar
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