[Libguestfs] nbdkit background threads

[Richard W.M. Jones]

On Mon, Feb 10, 2020 at 01:52:25PM -0600, Eric Blake wrote:
> There's also the question of how we would do compostion.  For
> example, right now, the 'split' plugin basically acts as a compose
> operation over the 'file' plugin (you can concatenate more than one
> regular file), but more generically, we'd want some way to compose
> an arbitrary number of plugins and/or filters, where having a
> socketpair to each such composed child lets us handle more than just
> files.

Since we allow plugins to have global variables, I suspect composition
is impossible (unless there's some dlopen trick that I'm missing).

Rich.

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