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.\"
.IX Title "libnbd-release-notes-1.14 1"
.TH libnbd-release-notes-1.14 1 2024-05-31 libnbd-1.20.0 LIBNBD
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH NAME
libnbd\-release\-notes\-1.14 \- release notes for libnbd 1.14
.SH DESCRIPTION
.IX Header "DESCRIPTION"
These are the release notes for libnbd stable release 1.14.
This describes the major changes since 1.12.
.PP
libnbd 1.14.0 was released on \fB1 August 2022\fR.
.SS Security
.IX Subsection "Security"
No security issues were found in this release.
.PP
If you find a security issue, please read \fISECURITY\fR in the source
(online here:
https://gitlab.com/nbdkit/libnbd/blob/master/SECURITY).  To
find out about previous security issues in libnbd, see
\&\fBlibnbd\-security\fR\|(3).
.SS "New APIs"
.IX Subsection "New APIs"
No new APIs were added in this release.
.SS "Enhancements to existing APIs"
.IX Subsection "Enhancements to existing APIs"
Optimizations to \fBnbd_pread_structured\fR\|(3) (Eric Blake).
.PP
Many performance enhancements in the Python bindings: \f(CW\*(C`nbd.pread\*(C'\fR now
avoids an extra memory allocation and copy.  Buffers can now be passed
to \f(CW\*(C`nbd.Buffer.from_bytearray\*(C'\fR.  New methods
\&\f(CW\*(C`nbd.Buffer.{to,from}_buffer\*(C'\fR allow control over copying and sharing
\&\f(CW\*(C`nbd.Buffer\*(C'\fR.  Any buffer-like object can be used in
\&\f(CW\*(C`nbd.aio_{pread,pwrite}\*(C'\fR.  \f(CW\*(C`len(nbd.Buffer(n))\*(C'\fR now works.  Improve
error messages when the wrong types are passed to several APIs.  Fix
usage of \f(CW\*(C`PyGILState\*(C'\fR.  (Eric Blake)
.PP
Golang \f(CW\*(C`AioBuffer\*(C'\fR now calls panic on invalid usage (Nir Soffer).
.PP
In golang tests, use \f(CW\*(C`GOTRACEBACK=crash\*(C'\fR so we get full core dumps on
failures.
.PP
kTLS should now work (transparently) when available in the kernel and
GnuTLS.  Use of kTLS will be indicated in debug output.  (Daiki Ueno,
František Krenželok)
.SS Tools
.IX Subsection "Tools"
New \fBnbddump\fR\|(1) tool which can efficiently hexdump the contents of
an NBD server.
.PP
\&\fBnbdcopy\fR\|(1) now obeys the NBD server minimum/preferred block size
when copying, which should make it more efficient and avoids issues
with some qemu-nbd configurations where the minimum block size must be
obeyed for correct operation.
.SS Tests
.IX Subsection "Tests"
New tests for \f(CW\*(C`nbd+vsock://\*(C'\fR URI support.
.SS "Other improvements and bug fixes"
.IX Subsection "Other improvements and bug fixes"
Fixed rare TLS deadlock when reading from slow servers, and support
for clean shutdown when connecting to qemu-nbd over TLS (thanks
Michael Ablassmeier).
.PP
The library now uses the GnuTLS flag \f(CW\*(C`GNUTLS_NO_SIGNAL\*(C'\fR (if
available) which ensures that TLS connections should not cause the
main program to exit with \f(CW\*(C`SIGPIPE\*(C'\fR in certain cases of server
failure.  (Libnbd has long used \f(CW\*(C`MSG_NOSIGNAL\*(C'\fR on non-TLS connections
which has a similar effect.)
.PP
Various enhancements to fuzzing were made, including support for AFL++
clang-LTO mode, ASAN, allowing seed test cases to be captured, and
extended testing of APIs.
.PP
Tests were fixed so they should pass on RHEL 7 and FreeBSD.
.SS Documentation
.IX Subsection "Documentation"
No changes in this release.
.SS Build
.IX Subsection "Build"
\&\f(CW\*(C`ARRAY_SIZE\*(C'\fR macro added to simplify static array sizing (thanks
Laszlo Ersek).
.PP
Various errors found by Coverity were fixed.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBlibnbd\fR\|(3).
.SH AUTHORS
.IX Header "AUTHORS"
.IP "Eric Blake" 4
.IX Item "Eric Blake"
.PD 0
.IP "Nir Soffer" 4
.IX Item "Nir Soffer"
.IP "Richard W.M. Jones" 4
.IX Item "Richard W.M. Jones"
.PD
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright Red Hat
.SH LICENSE
.IX Header "LICENSE"
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
.PP
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.
.PP
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110\-1301 USA