4 Welcome to the NBD userland support files!
6 This package contains nbd-server and nbd-client.
8 To install the package, download the source and do the normal
9 `configure`/`make`/`make install` dance. You'll need to install it on both the
10 client and the server. Note that released nbd tarballs are found on
11 [sourceforge](http://sourceforge.net/projects/nbd/files/nbd/).
13 For compiling from git, do a checkout, install the SGML tools
14 (docbook2man), and then run './autogen.sh' while inside your checkout.
20 If you want to send a patch, please do not open a pull request; instead, send
22 [mailinglist](https://lists.sourceforge.net/lists/listinfo/nbd-general)
27 NBD is quite easy to use. First, on the client, you need to load the module
28 and, if you're not using udev, to create the device nodes:
34 (if you need more than one NBD device, repeat the above command for nbd1,
37 Next, write a configuration file for the server. An example looks like
42 # The [generic] section is required, even if nothing is specified
44 # When either of these options are specified, nbd-server drops
45 # privileges to the given user and group after opening ports, but
46 # _before_ opening files.
50 exportname = /export/nbd/export1-file
51 authfile = /export/nbd/export1-authfile
57 prerun = dd if=/dev/zero of=%s bs=1k count=500
60 exportname = /export/nbd/experiment
61 # The other options are all optional
63 The configuration file is parsed with GLib's GKeyFile, which parses key
64 files as they are specified in the Freedesktop.org Desktop Entry
65 Specification, as can be found at
66 <http://freedesktop.org/Standards/desktop-entry-spec>. While this format
67 was not intended to be used for configuration files, the glib API is
68 flexible enough for it to be used as such.
72 nbd-server -C /path/to/configfile
74 Note that the filename must be an absolute path; i.e., something like
75 `/path/to/file`, not `../file`. See the nbd-server manpage for details
76 on any available options.
78 Finally, you'll be able to start the client:
80 nbd-client <hostname> -N <export name> <nbd device>
84 nbd-client 10.0.0.1 -N otherexport /dev/nbd0
86 will use the second export in the above example (the one that exports
87 `/export/nbd/experiment`)
89 `nbd-client` must be ran as root; the same is not true for nbd-server
90 (but do make sure that /var/run is writeable by the server that
91 `nbd-server` runs as; otherwise, you won't get a PID file, though the
92 server will keep running).
94 There are packages (or similar) available for the following operating
97 - Debian (and derivatives, like Ubuntu): `nbd-client` and `nbd-server`,
99 - Gentoo: the `nbd` ebuild in the `sys-block` category, available in
101 - FreeBSD: `net/nbd-server`, available in the ports tree since 2003.
102 FreeBSD doesn't have kernel support for NBD, so obviously the client
104 - SuSE: `nbd`, in SuSE 10.0
105 - Fedora: `nbd`, since Fedora 7
106 - uClibc's `buildroot` script also seems to have support for NBD.
108 If you're packaging NBD for a different operating system that isn't in
109 the above list, I'd like to know about it.
111 For questions, please use the `nbd-general@lists.sourceforge.net` mailinglist.
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