Is anyone using libzfs_core on 15-CURRENT?

Hi all,

I have some code using libzfs_core that works fine on 13, but seems not to on 15-CURRENT.  The lzc_snapshot function is failing with exactly the same nv list argument.  It is failing with errno 2 (ENOENT) from the ZFS ioctl (and not returning an nvlist of errors).

My understanding is that the zfs command-line tool wraps libzfs_core and so it must be working somehow.  Has anything changed in between 13 and 14 that would be expected to cause incompatibilities?  The fact that we don’t install usable headers for these libraries makes it quite difficult to be sure that I haven’t done anything wrong, but stepping through the libzfs_core bits in a debugger, everything looks correct up to the ioctl call.

David