'\" t
.\"     Title: iscsi-md5sum
.\"    Author: [see the "AUTHOR" section]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 10/25/2023
.\"    Manual: iscsi-md5sum: calculate MD5
.\"    Source: iscsi-md5sum
.\"  Language: English
.\"
.TH "ISCSI\-MD5SUM" "1" "10/25/2023" "iscsi\-md5sum" "iscsi\-md5sum: calculate MD5"
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.SH "NAME"
iscsi-md5sum \- Utility to calculate MD5 value of an iSCSI LUN at range [LBAm, LBAn)
.SH "SYNOPSIS"
.HP \w'\fBiscsi\-md5sum\ [\ OPTIONS\ ]\ <ISCSI\-PORTAL>\fR\ 'u
\fBiscsi\-md5sum [ OPTIONS ] <ISCSI\-PORTAL>\fR
.HP \w'\fBiscsi\-md5sum\fR\ 'u
\fBiscsi\-md5sum\fR [\-i\ \-\-initiator\-name=<IQN>] [\-o\ \-\-offset] [\-l\ \-\-length] [\-d\ \-\-debug] [\-?\ \-\-help] [\-\-usage]
.SH "DESCRIPTION"
.PP
iscsi\-md5sum is a utility to calculate MD5 value of an iSCSI LUN at range [LBAm, LBAn)\&.
.SH "ISCSI PORTAL URL FORMAT"
.PP
iSCSI portal format is \*(Aqiscsi://[<username>[%<password>]@]<host>[:<port>]\*(Aq
.PP
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\&.
.PP
Host can be specified either as a hostname, an IPv4 address or an IPv6 address\&. Examples:
.sp
.if n \{\
.RS 4
.\}
.nf
	iscsi://192\&.0\&.2\&.1
	iscsi://[2001:DB8::1]:3261
	iscsi://ronnie%password@iscsi\&.example\&.com
      
.fi
.if n \{\
.RE
.\}
.PP
Port is the TCP port on the target to connect to\&. Default is 3260\&.
.SH "OPTIONS"
.PP
\-i \-\-initiator\-name=<IQN>
.RS 4
This specifies the initiator\-name that iscsi\-md5sum will use when logging in to the target\&.
.sp
The default name is \*(Aqiqn\&.2007\-10\&.com\&.github:sahlberg:libiscsi:iscsi\-md5sum\*(Aq 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\&.
.RE
.PP
\-o \-\-offset
.RS 4
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\&.
.RE
.PP
\-l \-\-length
.RS 4
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\&.
.RE
.PP
\-d \-\-debug
.RS 4
Print debug information\&.
.RE
.PP
\-? \-\-help
.RS 4
Display basic help text\&.
.RE
.PP
\-\-usage
.RS 4
Display basic usage text\&.
.RE
.SH "AUTHOR"
.PP
zhenwei pi <pizhenwei@bytedance\&.com>
.SH "SEE ALSO"
.PP
iscsi\-inq(1)
\m[blue]\fB\%http://github.com/sahlberg/libiscsi\fR\m[]