Re: [Libguestfs] virt-v2v become zombie via python cpopen on error

On 30 Mar 2016, at 11:49, Richard W.M. Jones <rjones(a)redhat.com&gt; wrote: On Wed, Mar 30, 2016 at 12:19:35PM +0300, Shahar Havivi wrote: > Hi, > > We encounter a problem in VDSM project that virt-v2v become zombie task while > importing vm from vmware. > When virt-v2v is in 'copy disk' mode and we someone deletes the vm at vmware > the process hang in read() method, > I am pretty sure that its not virt-v2v problem because when I run it from the > shell virt-v2v exit with an error, still maybe someone have an idea.... > > I wrote a small python script that encounter the problem: > > ---------------------------------------------------------------------------- > from cpopen import CPopen > > env = {'LIBGUESTFS_BACKEND': 'direct'} > cmd = ['/usr/bin/virt-v2v', '-ic', > 'vpx://....', '-o', > 'local', '-os', '/tmp', '-of', 'raw', '-oa', 'sparse', > '--password-file', '/tmp/passwd', '--machine-readable', 'bbb'] > p = CPopen(cmd, env=env) > while p.returncode is None: > c = p.stdout.read(1) > print c > ---------------------------------------------------------------------------- An actual zombie task? That would indicate that the parent process (your Python program) wasn't doing a wait system call. I downloaded the cpopen-1.4 program, and it doesn't appear to call any of the wait*(2) system calls anywhere, so that could be the problem.

Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into KVM guests. http://libguestfs.org/virt-v2v