[Libguestfs] [PATCH 3/3] docs: Add a section about what happens to the plugin when nbdkit shuts down.

[Eric Blake]

On 11/14/2017 11:30 AM, Richard W.M. Jones wrote:
> This was underspecified before.
> ---
>  docs/nbdkit-plugin.pod | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 

> +=head1 SHUTDOWN
> +
> +When nbdkit receives certain signals it will shut down (see
> +L<nbdkit(1)/SIGNALS>).  The server will wait for any currently running
> +plugin callbacks to finish and also call the C<.unload> callback
> +before unloading the plugin.

Do we also guarantee that all subsequent client requests parsed off the
wire in between the signal and when we finally call the .unload()
callback will NOT call into the plugin, but will be immediately answered
to the client with NBD_ESHUTDOWN?  If not, we should.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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