From: "Junqin Zhou" <juzhou(a)redhat.com&gt; To: libvirt-users(a)redhat.com Cc: "Shahar Havivi" <shavivi(a)redhat.com&gt;, "Tingting Zheng" <tzheng(a)redhat.com&gt;, "Min Zhan" <mzhan(a)redhat.com&gt;, "Ming Xie" <mxie(a)redhat.com&gt; Sent: Wednesday, July 13, 2016 6:24:15 PM Subject: Please help see issue: conn.storageVolLookupByPath('/var/lib/xen/images/xen-pv-rhel5.9-x64-nolvm.img') Hi guys, While testing v2v integration to rhevm4.0, I met following error when import virtual machine from xen server. I.rhevm4.0 prompt error message Failed to communicate with the external provider, see log for additional details Steps： 1. In order to import VMs password-less SSH access has to be enabled between VDSM host and the Xen host. The following steps needed to be done at the VDSM host: Refer to https://github.com/oVirt/ovirt-site/blob/master/source/develop/release-ma... 2. Then login rhevm 4.0 and try to import virtual machine from Xen. Virtual Machines-->Import-->Fill items on 'Import Virtual Machine(s)' window with: Data Center:xx Source: Xen(via RHEL) URI: xen+ssh://root@xxxxxx Proxy Host: xxxxxx Result: Step2 failed to load xen server's guests with error: Failed to communicate with the external provider, see log for additional details Part of vdsm.log ... jsonrpc.Executor/3::WARNING::2016-07-13 08:18:40,588::v2v::959::root::(_add_disks) Disk {'alias': '/var/lib/xen/images/xen-pv-rhel5.9-x64-nolvm.img', 'type': 'disk', 'dev': 'xvda'} has unsupported format: <built-in function format> jsonrpc.Executor/3::ERROR::2016-07-13 08:18:41,504::v2v::923::root::(_add_disk_info) Error getting disk size Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/v2v.py", line 920, in _add_disk_info vol = conn.storageVolLookupByPath(disk['alias']) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 4596, in storageVolLookupByPath if ret is None:raise libvirtError('virStorageVolLookupByPath() failed', conn=self) libvirtError: Storage volume not found: no storage vol with matching path Please help me check how to resolve this issue, thanks. Best Regards, juzhou.