[Libguestfs] v2v: error while killing ssh-agent after importing VM via xen+ssh

[Shahar Havivi]

On 13.01.16 12:13, Richard W.M. Jones wrote:
> On Wed, Jan 13, 2016 at 12:49:19PM +0200, Shahar Havivi wrote:
> > On 13.01.16 10:27, Richard W.M. Jones wrote:
> > > When you run:
> > > 
> > >    eval `ssh-agent`
> >
> > I didn't run eval `ssh-agent` but ssh-agnet and then ssh-add (I
> > needed the SSH_AUTH_SOCK that return from ssh-agent since I am
> > running two different processes).
> >
> > I guess I can read the environment SSH_AUTH_SOCK after run eval
> > `ssh-agent`...
> >
> > do you think there is a different between running with to without eval?
> 
> Yes - very different.  If you don't use the eval then no SSH_*
> environment variables are set.
Since I am not running the command in the same shell the environment in the
command that run the ssh-agent are not relevant,
I do set them when I run the next command ssh-add and later when I run
virt-v2v.
 
  Shahar.
> 
> What probably happened just after that is you added the key to your X
> session's ssh-agent -- most desktop session managers start an instance
> of ssh-agent for you.
> 
> Another way to run ssh-agent which may be more appropriate for
> scripting is:
> 
>   ssh-agent command args ...
> 
> which runs the command straight after and kills ssh-agent when the
> command ends.  It would be tempting to run:
> 
>   ssh-agent virt-v2v ...
> 
> but that won't work because you still have to arrange for the ssh key
> to be added to virt-v2v's instance of ssh-agent.
> 
> Rich.
> 
> -- 
> Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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