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13 Welcome to the NBD userland support files!
15 This package contains nbd-server and nbd-client.
17 To install the package, do the normal `configure`/`make`/`make install`
18 dance. You'll need to install it on both the client and the server.
20 Note that released nbd tarballs are found on
21 [sourceforge](http://sourceforge.net/projects/nbd/files/nbd/).
26 If you want to send a patch, please do not open a pull request; instead, send
28 [mailinglist](https://lists.sourceforge.net/lists/listinfo/nbd-general)
33 NBD is quite easy to use. First, on the client, you need to load the module
34 and, if you're not using udev, to create the device nodes:
40 (if you need more than one NBD device, repeat the above command for nbd1,
43 Next, write a configuration file for the server. An example looks like
48 # The [generic] section is required, even if nothing is specified
50 # When either of these options are specified, nbd-server drops
51 # privileges to the given user and group after opening ports, but
52 # _before_ opening files.
56 exportname = /export/nbd/export1-file
57 authfile = /export/nbd/export1-authfile
63 prerun = dd if=/dev/zero of=%s bs=1k count=500
66 exportname = /export/nbd/experiment
67 # The other options are all optional
69 The configuration file is parsed with GLib's GKeyFile, which parses key
70 files as they are specified in the Freedesktop.org Desktop Entry
71 Specification, as can be found at
72 <http://freedesktop.org/Standards/desktop-entry-spec>. While this format
73 was not intended to be used for configuration files, the glib API is
74 flexible enough for it to be used as such.
78 nbd-server -C /path/to/configfile
80 Note that the filename must be an absolute path; i.e., something like
81 `/path/to/file`, not `../file`. See the nbd-server manpage for details
82 on any available options.
84 Finally, you'll be able to start the client:
86 nbd-client <hostname> -N <export name> <nbd device>
90 nbd-client 10.0.0.1 -N otherexport /dev/nbd0
92 will use the second export in the above example (the one that exports
93 `/export/nbd/experiment`)
95 `nbd-client` must be ran as root; the same is not true for nbd-server
96 (but do make sure that /var/run is writeable by the server that
97 `nbd-server` runs as; otherwise, you won't get a PID file, though the
98 server will keep running).
100 There are packages (or similar) available for the following operating
103 - Debian (and derivatives, like Ubuntu): `nbd-client` and `nbd-server`,
105 - Gentoo: the `nbd` ebuild in the `sys-block` category, available in
107 - FreeBSD: `net/nbd-server`, available in the ports tree since 2003.
108 FreeBSD doesn't have kernel support for NBD, so obviously the client
110 - SuSE: `nbd`, in SuSE 10.0
111 - Fedora: `nbd`, since Fedora 7
112 - uClibc's `buildroot` script also seems to have support for NBD.
114 If you're packaging NBD for a different operating system that isn't in
115 the above list, I'd like to know about it.
117 For questions, please use the `nbd-general@lists.sourceforge.net` mailinglist.