[Libguestfs] [PATCH 0/4] p2v: Send ^C to remote end to cancel the conversion.

[Richard W.M. Jones]

(I don't have a BZ# for this yet, but I'm expecting it to be
filed as an RFE)

Currently if the user is in the virt-p2v GUI and cancels the
conversion, all that happens is we abruptly close the ssh session to
virt-v2v.

That is bad .. possibly (or maybe not).  But in any case there is an
alternative: we can send a ^C key to the virt-v2v process, which it
could catch and handle gracefully, although it doesn't do that right
now.

Sending ^C turns out to be complex.  It requires changes in miniexpect
(http://git.annexia.org/?p=miniexpect.git;a=commitdiff;h=fb0eeddc671039cabd9c53934e324ae218b21000).
Then we have to make sure the control connection to virt-v2v is opened
in "cooked" mode.

But we cannot open the control connection in cooked mode without also
changing the way we are copying files over to the remote server, so I
also had to implement 'scp' support.

After all that the conversion code can be modified to send ^C when the
connection is cancelled.

Rich.