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12 <!-- Fill in your name for FIRSTNAME and SURNAME. -->
13 <!ENTITY dhfirstname "<firstname>Wouter</firstname>">
14 <!ENTITY dhsurname "<surname>Verhelst</surname>">
15 <!-- Please adjust the date whenever revising the manpage. -->
16 <!ENTITY dhdate "<date>$Date$</date>">
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18 allowed: see man(7), man(1). -->
19 <!ENTITY dhsection "<manvolnum>8</manvolnum>">
20 <!ENTITY dhemail "<email>wouter@debian.org</email>">
21 <!ENTITY dhusername "Wouter Verhelst">
22 <!ENTITY dhucpackage "<refentrytitle>NBD-CLIENT</refentrytitle>">
23 <!ENTITY dhpackage "nbd-client">
25 <!ENTITY debian "<productname>Debian GNU/Linux</productname>">
26 <!ENTITY gnu "<acronym>GNU</acronym>">
40 <holder>&dhusername;</holder>
50 <refname>&dhpackage;</refname>
52 <refpurpose>connect to a server running nbd-server(1), to use its
53 exported block device</refpurpose>
57 <command>&dhpackage;</command>
58 <arg><option>bs=<replaceable>blocksize</replaceable></option></arg>
59 <arg choice=plain><option><replaceable>host</replaceable></option></arg>
60 <arg choice=plain><option><replaceable>port</replaceable></option></arg>
61 <arg choice=plain><option><replaceable>nbd-device</replaceable></option></arg>
62 <arg><option>-swap</option></arg>
63 <arg><option>-persist</option></arg>
66 <command>&dhpackage;</command>
67 <arg choice=plain><option>-d <replaceable>nbd-device</replaceable></option></arg>
71 <title>DESCRIPTION</title>
73 <para>With <command>&dhpackage;</command>, you can connect to a
74 server running <command>nbd-server</command>, thus using raw
75 diskspace from that server as a blockdevice on the local
78 <para>To do this, support from the Linux Kernel is necessary, in
79 the form of the Network Block Device (NBD). When you have that,
80 either in the kernel, or as a module, you can connect to an NBD
81 server and use its exported file through a block special file with
86 <title>OPTIONS</title>
88 <para>The following options are supported:</para>
92 <term><option>bs=<replaceable>blocksize</replaceable></option></term>
94 <para>Use a blocksize of "blocksize". Default is 1024;
95 allowed values are either 512, 1024, 2048 or 4096</para>
99 <term><option>host</option></term>
101 <para>The hostname of the machine running
102 <command>nbd-server</command>.</para>
106 <term><option>port</option></term>
108 <para>The TCP port on which <command>nbd-server</command> is
109 running at the server.</para>
113 <term><option>nbd-device</option></term>
115 <para>The block special file this nbd-client should connect
120 <term><option>-swap</option></term>
122 <para>Specifies that this NBD device will be used as
123 swapspace. If you intend to do that, please use this
124 option to prevent deadlocks. You'll need a special kernel
125 patch, available at NBD's homepage:
126 http://atrey.karlin.mff.cuni.cz/~pavel</para>
132 <title>EXAMPLES</title>
134 <para>Some examples of nbd-client usage:</para>
135 <itemizedlist mark="none">
137 <para>To connect to a server running on port 2000 at host
138 "server.domain.com", using the client's block special file
140 <para><command>nbd-client server.domain.com 2000
141 /dev/nb0</command></para>
144 <para>To connect to a server running on port 2001 at host
145 "swapserver.domain.com", using the client's block special
146 file "/dev/nb1", for swap purposes:</para>
147 <para><command>nbd-client swapserver.domain.com 2001 /dev/nb1
148 -swap</command></para>
151 <para>To disconnect the above connection again (after making
152 sure the block special file is not in use anymore):</para>
153 <para><command>nbd-client -d /dev/nb1</command></para>
158 <title>SEE ALSO</title>
160 <para>nbd-server (1).</para>
164 <title>AUTHOR</title>
165 <para>The NBD kernel module and the NBD tools have been written by
166 Pavel Macheck (pavel@ucw.cz).</para>
168 <para>The kernel module is now maintained by Paul Clements
169 (Paul.Clements@steeleye.com), while the userland tools are maintained by
170 Wouter Verhelst (wouter@debian.org)</para>
172 <para>This manual page was written by &dhusername; (&dhemail;) for
173 the &debian; system (but may be used by others). Permission is
174 granted to copy, distribute and/or modify this document under the
175 terms of the <acronym>GNU</acronym> General Public License,
176 version 2, as published by the Free Software Foundation.</para>
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