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Merge pull request #39 from open-iscsi/try-meson
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Migrate to using meson, deprecating autoconf
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gonzoleeman authored Sep 8, 2022
2 parents 9f20896 + 5ee8508 commit f11b500
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234 changes: 144 additions & 90 deletions README
Original file line number Diff line number Diff line change
Expand Up @@ -6,25 +6,25 @@ This is a partial implementation of iSNS, according to RFC4171.
The implementation is still somewhat incomplete, but I'm releasing
it for your reading pleasure.

The distribution comprises
The distribution comprises:

isnsd
This is the iSNS server, supporting persistent storage
of registrations in a file based database.
This is the iSNS server, supporting persistent storage
of registrations in a file based database.

isnsadm
A command line utility for querying the iSNS database,
and for registering/deregistering nodes and portals
A command line utility for querying the iSNS database,
and for registering/deregistering nodes and portals

isnsdd
An iSNS Discovery Daemon, which is still very much work
in progress. The daemon is supposed to handle all the
bit banging and server communications required to register
a node, its portals, and to maintain the registration.
It is also supposed to use the iSNS State Change Notification
framework to learn of new targets or initiators coming online,
and inform local services (such as the iSCSI initiator daemon)
about these changes.
An iSNS Discovery Daemon, which is still very much work
in progress. The daemon is supposed to handle all the
bit banging and server communications required to register
a node, its portals, and to maintain the registration.
It is also supposed to use the iSNS State Change Notification
framework to learn of new targets or initiators coming online,
and inform local services (such as the iSCSI initiator daemon)
about these changes.

Thanks!
-------
Expand All @@ -36,88 +36,140 @@ and his copious feedback!
What works, after a fashion:
----------------------------

- For now, I've been focusing on getting the iSCSI part to
work. There is some very basic support for FC objects, but
this will be hardly useful yet.
- For now, I've been focusing on getting the iSCSI part to
work. There is some very basic support for FC objects, but
this will be hardly useful yet.

- Registration, deregistration, query, getnext
You can use isnsadm to register iSCSI nodes, and portals.
isnsadm also illustrates how this is supposed to be used from
the client perspective.
- Registration, deregistration, query, getnext
You can use isnsadm to register iSCSI nodes, and portals.
isnsadm also illustrates how this is supposed to be used from
the client perspective.

- Discovery domains are supported mostly. The administrator
can create discovery domains using isnsadm, and place storage
nodes in domains. Queries by clients are scoped by their
discovery domains membership, so that they will be unable to
see nodes not part of a shared DD.
- Discovery domains are supported mostly. The administrator
can create discovery domains using isnsadm, and place storage
nodes in domains. Queries by clients are scoped by their
discovery domains membership, so that they will be unable to
see nodes not part of a shared DD.

Open-iSNS currently does not allow clients to place themselves
in a DD.
Open-iSNS currently does not allow clients to place themselves
in a DD.

Optionally, storage nodes that are not in any discovery domain
will be placed in a "default DD" (see the DefaultDiscoveryDomain
in isnsd.conf).
Optionally, storage nodes that are not in any discovery domain
will be placed in a "default DD" (see the DefaultDiscoveryDomain
in isnsd.conf).

- ESI, supported both by the server and the discovery daemon
- ESI, supported both by the server and the discovery daemon

- SCN, supported by the server and the discovery daemon
- SCN, supported by the server and the discovery daemon


What is still missing
---------------------

- Better documentation (esp. a HOWTO on getting started with iSNS)
- DD Sets
- Various bits and pieces of the protocol
- FC support
- Better documentation (esp. a HOWTO on getting started with iSNS)
- DD Sets
- Various bits and pieces of the protocol
- FC support



Building Open-iSNS
------------------

The Open-iSNS build is now based on autoconf. The distributed tarball
should include a configure script and a config.h.in file generated
from configure.ac. If these are missing, you can generate them
by running
Currently we are transitioning to using 'meson' instead of
autotools/autoconf. This means that, for now, both systems
work. But autoconf will be deprecated, so please start using
meson.

autoconf
autoheader
Using meson to Build open-isns
------------------------------
For Open-iSNS, the system is built using meson and ninja
(see https://github.com/mesonbuild/meson). If these packages aren't
available to you on your Linux distribution, you can download
the latest release from: https://github.com/mesonbuild/meson/releases.
The README.md file there describes in detail how to build it yourself,
including how to get ninja.

For most people, it should be sufficient to run configure without any
arguments, or at most with the option --prefix. If run without --prefix,
program files, manpages etc will be installed below /usr/local. To have
everything installed /usr/bin, /usr/share/man etc, run it as
To build the open-isns, first run meson to configure the build,
from the top-level open-iscsi directory, e.g.:

./configure --prefix=/usr
rm -rf builddir
mkdir builddir
meson [<OPTIONS>] setup builddir

Dependencies:
Meson has many options, some built in, and some specifically for
this project. To see the built-in options, run:

meson setup --help

One option of note is "--default-library={shared,static,both}". The
meson default is "shared".

The project-specific options are set using -D<OPTION>=VALUE. OPTIONS
are from. You can use 'meson configure' to see these project options:

security feature [check] use libcrypt for security
slp feature [check] use Service Location Protocol
shared_version boolean [true] use library versioning, if
building a shared library
systemddir string [/usr/lib/systemd] location of systemd files
rundir string [/var/run] where socket and pidfile go

Thus, one might run:

meson setup --default-library=both -Dsecurity=disabled -Drundir=/some/dir

Once meson has created and set up your "builddir" directory, you can
actually build the code using ninja:

- If you want to build Open-iSNS with support for authentication,
you need the OpenSSL libraries and header files installed.
ninja -C builddir [--verbose]

The configure script should pick up the presence of these
libraries, and enable security support automatically. To disable
this explicitly in your build, pass the --without-security option
to configure.
Using autotools/make to Build open-isns [DEPRECATED]
----------------------------------------------------
The Open-iSNS can still be build using autoconf, though this
method is deprected and will be removed soon. The distributed tarball
should include a configure script and a config.h.in file generated
from configure.ac. If these are missing, you can generate them
by running

- If you want to build Open-iSNS with SLP support, you need the
OpenSLP library and header file installed.
autoconf
autoheader

The configure script should pick up the presence of this library,
and enable SLP support automatically. To disable this explicitly
in your build, pass the --without-slp option to configure.
For most people, it should be sufficient to run configure without any
arguments, or at most with the option --prefix. If run without --prefix,
program files, manpages etc will be installed below /usr/local. To have
everything installed /usr/bin, /usr/share/man etc, run it as

./configure --prefix=/usr

Other project-specific options to configure include:

--without-security to disable security
--without-slp to disable Service Location Protocol
--with-rundir=/path to set the run directory [/var/run]
--enable-shared enabled building shared library
--disable-static disable building the static library
--enable-memdebug defined -DMEMDEBUG when compiling (deprecated)

When configure is run, it checks for the presence of a number of
headers and libraries in your system (the results of most of these checks
are currently ignored). Then, it creates a Makefile and a config.h
include file. With these in place, you can build the binaries and libraries:

make
make install

Then, run "make clean" to clean up your binaries, or run "make distclean"
to get back to a clean pre-configuration state.

Dependencies:

When configure is run, it checks for a the presence of a number of
headers and libraries in your system (the results of most of these checks
are currently ignored :-). Then, it creates a Makefile and a config.h
include file. With these in place, you can build the binaries and libraries:
- If you want to build Open-iSNS with support for authentication,
you need the OpenSSL libraries and header files installed.

make
make install
- If you want to build Open-iSNS with SLP support, you need the
OpenSLP library and header file installed.

Then, run "make clean" to clean up your binaries, or run "make distclean"
to get back to a clean pre-configuration state.


Testing
Expand All @@ -133,12 +185,13 @@ On the iSNS server, you need to generate a server key and install it. The
simplest way is probably to use the isnssetup script included in the
source package.

For each client you wish to use, you should then
For each client you wish to use, you should then register that key using
the example setup script, or steps similar to those in the script.

iSNS Security
-------------

This implementation of iSNS supports authentication, as descibed in RFC
This implementation of iSNS supports authentication, as described in RFC
4171. In order to use it, you have to create DSA keys for the server and
all clients.

Expand All @@ -158,51 +211,52 @@ Downloading Open-iSNS

Open-iSNS is available for download from:

https://github.com/gonzoleeman/open-isns/archive/$(VERSION).tar.gz
https://github.com/open-iscsi/open-isns/archive/$(VERSION).tar.gz

or, in souce form, from:
or, in source form, from:

git@github.com:gonzoleeman/open-isns.git
https://github.com/open-iscsi/open-isns

You have to grab the latest tarball and compile it; fancy things such
as RPMs are not available yet.

------------------------------------------------------------------


COPYRIGHT NOTICE
COPYRIGHT NOTICE

Copyright (C) 2007 Olaf Kirch.
Copyright (C) 2007 Olaf Kirch.

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 2.1 of the License, or (at your option) any later version.
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 2.1 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.
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.
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.

------------------------------------------------------------------

Author:
Olaf Kirch <[email protected]>
Olaf Kirch <[email protected]>

Current maintainer:
Lee Duncan <[email protected]> 2015
Lee Duncan <[email protected]> (since 2015)

------------------------------------------------------------------

Things to do:

* fully implement/require device discovery sets
* implement ability to pass in flags to systemd service file for isnsd
* improve automated testing (using PyUnit?)
* ensure all tests pass (!!)
* document testing procedure
* document testing procedure better
* remove the old perl-based tests
* fix testing using meson
6 changes: 6 additions & 0 deletions configure
Original file line number Diff line number Diff line change
Expand Up @@ -621,6 +621,7 @@ ac_includes_default="\

ac_subst_vars='LTLIBOBJS
LIBOBJS
VERSION
RUNDIR
ENABLE_STATIC
ENABLE_SHARED
Expand Down Expand Up @@ -4472,6 +4473,8 @@ $as_echo "$as_me: WARNING: *** You have not enabled versioned symbols." >&2;}

fi

VERSION=0.101




Expand Down Expand Up @@ -5758,3 +5761,6 @@ if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Autotool/configure/make are deprecated, and will be removed soon. Please using \"meson\" instead" >&5
$as_echo "$as_me: WARNING: Autotool/configure/make are deprecated, and will be removed soon. Please using \"meson\" instead" >&2;}
5 changes: 5 additions & 0 deletions configure.ac
Original file line number Diff line number Diff line change
Expand Up @@ -161,8 +161,13 @@ if test "x$ENABLE_SHARED" = "x1" ; then
AC_SUBST(HAVE_LD_VERSION_SCRIPT)
fi

VERSION=AC_PACKAGE_VERSION
AC_SUBST(ENABLE_SHARED)
AC_SUBST(ENABLE_STATIC)
AC_SUBST(RUNDIR)
AC_SUBST(VERSION)

AC_OUTPUT(Makefile include/libisns/paths.h)

dnl Warn user that autoconf is deprecated here
AC_MSG_WARN([Autotool/configure/make are deprecated, and will be removed soon. Please using "meson" instead])
10 changes: 10 additions & 0 deletions doc/meson.build
Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
# meson build file for open-isns doc (man pages)

# do not install isnssetup.8, as it's a man page
# for aninternal script
man8_pages = files([
'isnsd.8',
'isnsdd.8',
'isnsadm.8'])
man5_pages = files([
'isns_config.5'])
6 changes: 6 additions & 0 deletions etc/meson.build
Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
# meson build file for open-isns etc files

config_files = files([
'isnsd.conf',
'isnsdd.conf',
'isnsadm.conf'])
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