While investigating an issue raised by an upstream user, we found quite a serious bug in the way that JSON fragments are transferred between the Python and OCaml code in virt-v2v. Basically if you're unlucky with how your RHV / oVirt hosts are named, you can end up with corrupted JSON. I'm surprised we haven't seen this already.

Anyway the fix is trivial and obvious so we should back port this to RHEL, even though RHV is / is going to be unsupported.

Upstream bug and investigation:
https://github.com/libguestfs/virt-v2v/issues/46

Commits with the fix (only the last 2 are really needed, the rest improve debugging):
https://github.com/libguestfs/virt-v2v/commit/cfeebf0f121e21b8a96092330e02cc9875ee2af4
https://github.com/libguestfs/virt-v2v/commit/d8f09872a694836edce4685c605c09ba5ece9c31
https://github.com/libguestfs/virt-v2v/commit/19ac262ceb03db2bf53a63302673d328737523de
https://github.com/libguestfs/virt-v2v/commit/0ea92cc02949f3e829744e6e62d861dfd8ff5607
https://github.com/libguestfs/virt-v2v/commit/ff341481eb397d700c346d27c8a23f9732028e03
https://github.com/libguestfs/virt-v2v/commit/5672d89531ebe560aa4437a82009bdf6532983d1
https://github.com/libguestfs/virt-v2v/commit/089d9a235e0e8a959c6d85004e24f2cdb37681b4