Comment # 3 on bug 1223444 from Claudio Fontana

(In reply to Rodney Baker from comment #2)
> There is no "requires" for e2fsprogs, ntfsprogs or any other similar file
> system packages - surely the same applies to them if trying to convert an
> image that uses ext[2,3,4] or ntfs? Why should btrfsprogs be any different?
> "Recommends" seems to make more sense here.

A virt-v2v that does not work for guests with btrfs is a non-functional
virt-v2v.

virt-v2v is only useful if it can convert guests successfully. To do that it
needs tools on the host.

If there is an issue when upgrading virt-v2v for some reason, that issue needs
to be solved.

With virt-v2v it's do (install virt-v2v) or do not (do not install virt-v2v),
there is no try.