On Fri, Sep 27, 2019 at 10:22:10PM -0500, Eric Blake wrote: > On 9/15/19 9:55 AM, Richard W.M. Jones wrote: > > >The fun plugin is a reflection plugin which "reflects" client > >information back to the client. We have a few fun plugins like this > >(hello there, nbdkit-full-plugin) and normally I would push these > >without review, but in this particular case there's a specific danger > >that sending back data under control of the client might lead to a > >security problem. I _believe_ I have avoided that pitfall, but my > >belief isn't as good as having experts review it :-) > > > > A thought for another potentially fun mode: what if the reflection > plugin reports back connection uptime? The disk would be a > fixed-width size (maybe 8 bytes: uint32_t for seconds, uint32_t for > nanoseconds), where the contents are always changing to record the > delta in time between any given request and when the connection was > first created (in this mode, multi-conn and caching contents is > actually quite wrong). Back-to-back commands can in turn be used to > measure connection latencies.
Yes good idea - I sent a patch. It needs a test which I can get around to later. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top _______________________________________________ Libguestfs mailing list [email protected] https://www.redhat.com/mailman/listinfo/libguestfs
