Description of problem: Importing from KVM to RHV fails: 2018-12-20 12:52:39,255+1000 ERROR (v2v/f5c91f71) [root] Job u'f5c91f71-19d0-4381-805e-58f0d2f7b094' failed (v2v:865) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/v2v.py", line 860, in _run self._import() File "/usr/lib/python2.7/site-packages/vdsm/v2v.py", line 879, in _import self._watch_process_output() File "/usr/lib/python2.7/site-packages/vdsm/v2v.py", line 904, in _watch_process_output for event in parser.parse(out): File "/usr/lib/python2.7/site-packages/vdsm/v2v.py", line 961, in parse for chunk in self._iter_progress(stream): File "/usr/lib/python2.7/site-packages/vdsm/v2v.py", line 980, in _iter_progress raise OutputParserError('copy-disk stream closed unexpectedly') OutputParserError: copy-disk stream closed unexpectedly Image on Source: $ sudo qemu-img info fedora29.img image: fedora29.img file format: qcow2 virtual size: 30G (32212254720 bytes) disk size: 1.9G cluster_size: 65536 Format specific information: compat: 1.1 lazy refcounts: true refcount bits: 16 corrupt: false Source Host: RHEL7 libvirt-3.9.0-14.el7_5.8.x86_64 Proxy Host: RHEL7 vdsm-4.20.43-1.el7.x86_64 libvirt-3.9.0-14.el7_5.8.x86_64 Proxy Host (Test 2): CentOS vdsm-4.30.4-6.gitbb2a5fd.el7.x86_64 libvirt-4.5.0-10.el7_6.3.x86_64 Version-Release number of selected component (if applicable): vdsm-4.20.43-1.el7.x86_64 vdsm-4.30.4-6.gitbb2a5fd.el7.x86_64 How reproducible: Always, on both vdsm versions Steps to Reproduce: 1. Install VM on KVM using qcow2 disk 2. Attempt to import VM to RHV on Block SD using KVM Import Actual results: Fails Expected results: Succeeds Additional info: [1] https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.2/html/virtual_machine_management_guide/sect-exporting_and_importing_virtual_machines_and_templates#Importing_a_Virtual_Machine_from_KVM I added some debug, it seems the problem is trying to os.ftruncate() a logical volume (LVM), don't think this works. [ 0.4] fd=/rhev/data-center/mnt/blockSD/f7eeca0e-b360-4d88-959a-1e0e0730f846/images/acf66501-659f-4bd0-bf60-955d70fc6871/1549f851-0517-472f-93ef-9e68319284be [ 0.4] estimated_size=32212254720, size=None [ 0.4] cur=262144 Traceback (most recent call last): File "/usr/libexec/vdsm/kvm2ovirt", line 22, in <module> kvm2ovirt.main() File "/usr/lib/python2.7/site-packages/vdsm/kvm2ovirt.py", line 257, in main handle_volume(con, diskno, src, dst, options) File "/usr/lib/python2.7/site-packages/vdsm/kvm2ovirt.py", line 198, in handle_volume options.bufsize) File "/usr/lib/python2.7/site-packages/vdsm/kvm2ovirt.py", line 161, in download_disk_sparse stream.sparseRecvAll(bytesWriteHandler, recvSkipHandler, op) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 6122, in sparseRecvAll ret = holeHandler(self, length, opaque) File "/usr/lib/python2.7/site-packages/vdsm/kvm2ovirt.py", line 83, in recvSkipHandler return os.ftruncate(fd, cur) OSError: [Errno 22] Invalid argument
This limitation is actually documented. Closing.