Re: [Libguestfs] [libnbd PATCH 4/4] states: Use RESYNC to handle more structured reply server bugs

On Fri, Aug 12, 2022 at 08:07:25AM -0500, Eric Blake wrote: Thanks - as mentioned before I'll give this a good "going over" with fuzzing next week. I think in the spirit of NBD having at least a simple core protocol we should definitely try to cope with home-brew servers and suchlike that are not quite conforming. I often run into more obscure NBD servers [see addendum] and wonder how good they are. This one sees like something we'd want to opt into though. Couldn't it indicate quite serious desynchronization and/or data loss? Rich. Addendum - lesser known NBD servers of note: - VMware's - Veritas Netbackup - https://github.com/vi/nbdserve - https://github.com/amccurry/nbd-server - https://github.com/takahiro-hirofuchi/xnbd - https://bitbucket.org/belczyk/bnbd/wiki/Home - https://github.com/xapi-project/nbd - https://docs.rs/nbd/latest/nbd/ -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com nbdkit - Flexible, fast NBD server with plugins https://gitlab.com/nbdkit/nbdkit