mirror of
https://github.com/systemd/systemd.git
synced 2024-12-22 17:35:35 +03:00
107 lines
4.8 KiB
XML
107 lines
4.8 KiB
XML
<?xml version="1.0"?>
|
|
<!--*-nxml-*-->
|
|
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
|
|
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
|
|
<refentry id="systemd-storagetm.service" conditional='ENABLE_STORAGETM'
|
|
xmlns:xi="http://www.w3.org/2001/XInclude">
|
|
|
|
<refentryinfo>
|
|
<title>systemd-storagetm.service</title>
|
|
<productname>systemd</productname>
|
|
</refentryinfo>
|
|
|
|
<refmeta>
|
|
<refentrytitle>systemd-storagetm.service</refentrytitle>
|
|
<manvolnum>8</manvolnum>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>systemd-storagetm.service</refname>
|
|
<refname>systemd-storagetm</refname>
|
|
<refpurpose>Exposes all local block devices as NVMe-TCP mass storage devices</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<para><filename>systemd-storagetm.service</filename></para>
|
|
|
|
<cmdsynopsis>
|
|
<command>/usr/lib/systemd/systemd-storagetm</command>
|
|
<arg choice="opt" rep="repeat">OPTIONS</arg>
|
|
<arg choice="opt"><replaceable>DEVICE</replaceable></arg>
|
|
</cmdsynopsis>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para><filename>systemd-storagetm.service</filename> is a service that exposes all local block devices as
|
|
NVMe-TCP mass storage devices. Its primary use-case is to be invoked by the
|
|
<filename>storage-target-mode.target</filename> unit that can be booted into.</para>
|
|
|
|
<warning>
|
|
<para>The NVMe disks are currently exposed without authentication or encryption, in read/write
|
|
mode. This means network peers may read from and write to the device without any restrictions. This
|
|
functionality should hence only be used in a local setup.</para>
|
|
</warning>
|
|
|
|
<para>Note that to function properly networking must be configured too. The recommended mechanism to boot
|
|
into a storage target mode is by adding <literal>rd.systemd.unit=storage-target-mode.target
|
|
ip=link-local</literal> on the kernel command line. Note that <literal>ip=link-local</literal> only
|
|
configures link-local IP, i.e. IPv4LL and IPv6LL, which means non-routable addresses. This is done for
|
|
security reasons, so that only systems on the local link can access the devices. Use
|
|
<literal>ip=dhcp</literal> to assign routable addresses too. For further details see
|
|
<citerefentry><refentrytitle>systemd-network-generator.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
|
|
<para>Unless the <option>--all</option> switch is used expects one or more block devices or regular files to expose
|
|
via NVMe-TCP as argument.</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Options</title>
|
|
|
|
<para>The following options are understood:</para>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><option>--nqn=</option></term>
|
|
<listitem><para>Takes a string. If specified configures the NVMe Qualified Name to use for the
|
|
exposed NVMe-TCP mass storage devices. The NQN should follow the syntax described in <ulink
|
|
url="https://nvmexpress.org/wp-content/uploads/NVM-Express-Base-Specification-2.0c-2022.10.04-Ratified.pdf">NVM
|
|
Express Base Specification 2.0c</ulink>, section 4.5 "NVMe Qualified Names". Note that the NQN
|
|
specified here will be suffixed with a dot and the the block device name before it is exposed on the
|
|
NVMe target. If not specified defaults to
|
|
<literal>nqn.2023-10.io.systemd:storagetm.<replaceable>ID</replaceable></literal>, where ID is
|
|
replaced by a 128bit ID derived from
|
|
<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
|
|
|
|
<xi:include href="version-info.xml" xpointer="v255"/></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><option>--all</option></term>
|
|
<term><option>-a</option></term>
|
|
|
|
<listitem><para>If specified exposes all local block devices via NVMe-TCP, current and future
|
|
(i.e. it watches block devices come and go and updates the NVMe-TCP list as needed). Note that by
|
|
default any block devices that originate on the same block device as the block device backing the
|
|
current root file system are excluded. If the switch is specified twice this safety mechanism is
|
|
disabled.</para>
|
|
|
|
<xi:include href="version-info.xml" xpointer="v255"/></listitem>
|
|
</varlistentry>
|
|
<xi:include href="standard-options.xml" xpointer="help" />
|
|
<xi:include href="standard-options.xml" xpointer="version" />
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
<para><simplelist type="inline">
|
|
<member><citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
|
|
<member><citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry></member>
|
|
</simplelist></para>
|
|
</refsect1>
|
|
|
|
</refentry>
|