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=head1 NAME
nbdkit-release-notes-1.38 - release notes for nbdkit 1.38
=head1 DESCRIPTION
These are the release notes for nbdkit stable release 1.38.
This describes the major changes since 1.36.
nbdkit 1.38.0 was released on B<5 April 2024>.
=head2 Security
No security issues were found in this release.
All past security issues and information about how to report new ones
can be found in L<nbdkit-security(1)>.
=head2 Plugins
New L<nbdkit-gcs-plugin(1)> providing support for Google Cloud Storage
(Mykola Ivanets).
L<nbdkit-data-plugin(1)>, L<nbdkit-memory-plugin(1)>,
L<nbdkit-floppy-plugin(1)>, L<nbdkit-iso-plugin(1)>,
L<nbdkit-sparse-random-plugin(1)> and L<nbdkit-torrent-plugin(1)> all
now advertise suitable minimum, preferred and maximum block sizes,
which means clients should be able to access them more efficiently.
L<nbdkit-vddk-plugin(1)> now supports VDDK up to version 8.0.2.1.
L<nbdkit-S3-plugin(1)> now reads sensitive tokens as passwords,
allowing more flexibility on how to safely pass them to nbdkit.
=head2 Filters
New L<nbdkit-readonly-filter(1)> which allows more fine-grained
control over whether a plugin is read-only (and also to change it at
runtime) compared to the normal nbdkit I<-r> command line option.
=head2 Language bindings
L<nbdkit-python-plugin(3)> adds bindings for C<nbdkit.is_tls>,
C<nbdkit.stdio_safe>, C<nbdkit.nanosleep> C<nbdkit.peer_pid>,
C<nbdkit.peer_uid>, C<nbdkit.peer_gid>,
C<nbdkit.peer_security_context>, C<nbdkit.read_password>.
L<nbdkit-ocaml-plugin(3)> implements zero-copy pread and pwrite calls.
This change is not backwards compatible for OCaml plugin code.
(Thanks Nicolas Ojeda Bar, Anil Madhavapeddy, Simon Cruanes).
nbdkit-ocaml-plugin also adds extra OCaml version information to
I<--dump-plugin> output; and adds an example of how to use debug
flags.
L<nbdkit-rust-plugin(3)> minimum Rust version (MSRV) increased to
1.63.0. Various issues found by clippy have been fixed (Alan Somers).
=head2 Server
New I<--no-meta-contexts> (I<--no-mc>) option which stops the server
from advertising metadata contexts, improving interoperability testing
(Eric Blake).
nbdkit I<--dump-plugin> outputs additional fields: The internal
C<soext>, either C<so> or C<dll> so you can tell what plugin/filter
extension the server is looking for. The C<max_api_version> is the
maximum plugin API version supported.
=begin comment
=head2 API
=end comment
=head2 Bug fixes
Fix compilation with GCC 14 (Florian Weimer).
Fix the default block size exposed by L<nbdkit-S3-plugin(1)>, fix the
zero callback, and other bug fixes (Mykola Ivanets).
L<nbdkit-luks-filter(1)> could enter an infinite loop in some error
cases (Wilko Nienhaus).
Several plugins would crash or behave strangely if no parameters were
passed. These have been fixed and a regression test added.
=head2 Documentation
Update fio benchmarking documentation (Eric Blake).
Add example of how to export a variable to I<--run> subcommands (Eric
Blake).
=head2 Tests
Fix Cirros CI tests (Peter Krempa).
=head2 Build
bash E<ge> 4 is required. (This was always true, but now the
F<./configure> script checks it.)
You can now use both environment variables C<NBDKIT_VALGRIND=1
NBDKIT_GDB=1> together to run valgrind and gdbserver, in order to
debug valgrinded nbdkit and plugins.
=head2 Internals
Important internal structs now contain magic values which are checked
by optional assertions, improving type safety.
=head1 SEE ALSO
L<nbdkit(1)>.
=head1 AUTHORS
Authors of nbdkit 1.38:
=begin comment
git shortlog -s v1.36.0..
=end comment
=over 4
=item Alan Somers
=item Eric Blake
=item Mykola Ivanets
=item Peter Krempa
=item Richard W.M. Jones
=back
=head1 COPYRIGHT
Copyright Red Hat
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