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doc: Add iscsi-md5sum

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Add document for utils/iscsi-md5sum.

Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
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zhenwei pi
2023-10-25 11:31:55 +08:00
parent d0cc81347f
commit 17fc7159b6
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<?xml version="1.0" encoding="iso-8859-1"?>
<refentry id="iscsi-md5sum.1">
<refmeta>
<refentrytitle>iscsi-md5sum</refentrytitle>
<manvolnum>1</manvolnum>
<refmiscinfo class="source">iscsi-md5sum</refmiscinfo>
<refmiscinfo class="manual">iscsi-md5sum: calculate MD5</refmiscinfo>
</refmeta>
<refnamediv>
<refname>iscsi-md5sum</refname>
<refpurpose>Utility to calculate MD5 value of an iSCSI LUN at range [LBAm, LBAn)</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>iscsi-md5sum [ OPTIONS ] &lt;ISCSI-PORTAL&gt;</command>
</cmdsynopsis>
<cmdsynopsis>
<command>iscsi-md5sum</command>
<arg choice="opt">-i --initiator-name=&lt;IQN&gt;</arg>
<arg choice="opt">-o --offset</arg>
<arg choice="opt">-l --length</arg>
<arg choice="opt">-d --debug</arg>
<arg choice="opt">-? --help</arg>
<arg choice="opt">--usage</arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1><title>DESCRIPTION</title>
<para>
iscsi-md5sum is a utility to calculate MD5 value of an iSCSI LUN at range [LBAm, LBAn).
</para>
</refsect1>
<refsect1><title>ISCSI PORTAL URL FORMAT</title>
<para>
iSCSI portal format is 'iscsi://[&lt;username&gt;[%&lt;password&gt;]@]&lt;host&gt;[:&lt;port&gt;]'
</para>
<para>
Username and password are only required if the target requires CHAP
authentication. Optionally you can specify the username and password via
the environment variables LIBISCSI_CHAP_USERNAME and
LIBISCSI_CHAP_PASSWORD.
</para>
<para>
Host can be specified either as a hostname, an IPv4 address or an
IPv6 address.
Examples:
<screen format="linespecific">
iscsi://192.0.2.1
iscsi://[2001:DB8::1]:3261
iscsi://ronnie%password@iscsi.example.com
</screen>
</para>
<para>
Port is the TCP port on the target to connect to. Default is 3260.
</para>
</refsect1>
<refsect1>
<title>OPTIONS</title>
<variablelist>
<varlistentry><term>-i --initiator-name=&lt;IQN&gt;</term>
<listitem>
<para>
This specifies the initiator-name that iscsi-md5sum will use when
logging in to the target.
</para>
<para>
The default name is
'iqn.2007-10.com.github:sahlberg:libiscsi:iscsi-md5sum' but you can use
this argument to override this. This is mainly needed for cases
where the target is configured with access-control to only
allow discovery logins from known initiator-names.
</para>
</listitem>
</varlistentry>
<varlistentry><term>-o --offset</term>
<listitem>
<para>
Byte offset into the target from which to start calculating.
The provided value must be aligned to the target sector size.
The default value is zero.
</para>
</listitem>
</varlistentry>
<varlistentry><term>-l --length</term>
<listitem>
<para>
The number of bytes to calculate (counting from the starting point).
The provided value must be aligned to the target sector size.
If the specified value extends past the end of the device,
iscsi-md5sum will stop at the device size boundary.
The default value extends to the end of the device.
</para>
</listitem>
</varlistentry>
<varlistentry><term>-d --debug</term>
<listitem>
<para>
Print debug information.
</para>
</listitem>
</varlistentry>
<varlistentry><term>-? --help</term>
<listitem>
<para>
Display basic help text.
</para>
</listitem>
</varlistentry>
<varlistentry><term>--usage</term>
<listitem>
<para>
Display basic usage text.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1><title>AUTHOR</title>
<para>
zhenwei pi &lt;pizhenwei@bytedance.com&gt;
</para>
</refsect1>
<refsect1><title>SEE ALSO</title>
<para>
iscsi-inq(1)
<ulink url="http://github.com/sahlberg/libiscsi"/>
</para>
</refsect1>
</refentry>