NAME

       libnbd-release-notes-1.6 - release notes for libnbd 1.6

DESCRIPTION

       These are the release notes for libnbd stable release 1.6.  This describes the major changes since 1.4.

       libnbd 1.6.0 was released on 7 January 2021.

   Security
       There were no security issues found in this release.

       If you find a security issue, please read SECURITY in the source (online here:
       https://gitlab.com/nbdkit/libnbd/blob/master/SECURITY).  To find out about previous security issues in
       libnbd, see libnbd-security(3).

   New APIs
       nbd_set_strict_mode(3)
       nbd_get_strict_mode(3)
           This  API  allows  you  to  control how libnbd handles requests from the program that it thinks would
           trigger undefined behaviour in the server (such as sending unknown commands,  zero-sized  or  out-of-
           bounds  requests,  etc).   Normally  libnbd  is  very  strict  and will prevent you from sending such
           requests, but you can use this API to relax these restrictions, leaving it up to the server to handle
           or reject them.  Some servers may crash if you do this.

       nbd_get_nr_meta_contexts(3)
       nbd_get_meta_context(3)
       nbd_clear_meta_contexts(3)
           These APIs allow you to review or clear the requested metadata contexts.

       nbd_opt_list_meta_context(3)
       nbd_aio_opt_list_meta_context(3)
           Request that the server lists available metadata contexts.  You can only use this in opt mode.

       Thanks: Eric Blake for all of the new APIs.

   Enhancements to existing APIs
       nbd_shutdown(3) new flag "LIBNBD_SHUTDOWN_ABANDON_PENDING" drops any commands in flight  which  have  not
       been sent to the server yet (Eric Blake).

       All  APIs which have flag (bitmask) parameters now define a "LIBNBD_*_MASK" constant allowing you to tell
       which bits represent valid flags at compilation time (Eric Blake).

   New features
       The performance of the nbdcopy(1) tool  has  been  greatly  improved.   Also  it  supports  numerous  new
       features.

       New  nbdinfo(1)  --map  option  showing the allocated and sparse extents of an NBD server.  This can also
       show other information such as dirty bitmaps.

   Tools
       nbdfuse(1) can now mount the NBD export on top of any regular file, it does not  have  to  mount  over  a
       directory.

       nbdsh(1) now produces a nice error message if the URI in the -u option or the command in the -c option is
       wrong (Eric Blake).

       New nbdsh(1) --opt-mode option which requests opt mode on the handle before connecting.

       nbdinfo(1) --list option now shows the supported metadata contexts of the server (Eric Blake).

       The  output of nbdinfo(1) is now usually printed atomically, ie. it will either print the complete output
       or an error message, but not partial output followed by an error.

       nbdinfo(1) can now decode "qemu:allocation-depth" metacontext (Eric Blake).

   Other improvements and bug fixes
       Multiple improvements to handling of NBD protocol (Eric Blake).

       Fix handling of booleans in Python bindings (Eric Blake).

       Fix handling of flags parameters in OCaml bindings (Eric Blake).

       Python style fixes (Eric Blake).

       Fix multiple memory leaks (Eric Blake).

       OCaml bindings now include ocamldoc-generated documentation, if ocamldoc is installed at build time.

       The "vector" library from nbdkit is now  used  by  libnbd,  simplifying  places  where  we  used  to  use
       realloc(3).

SEE ALSO

       libnbd(3).

AUTHORS

       Eric Blake

       Richard W.M. Jones

COPYRIGHT

       Copyright Red Hat

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.

       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.

       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

libnbd-1.20.0                                      2024-04-05                        libnbd-release-notes-1.6(1)