4222c04023
Submitted by: jceel@ Reviewed by: wblock@ MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D7222
123 lines
4.0 KiB
Groff
123 lines
4.0 KiB
Groff
.\" Copyright (c) 2012 The FreeBSD Foundation
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This software was developed by Edward Tomasz Napierala under sponsorship
|
|
.\" from the FreeBSD Foundation.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd July 21, 2016
|
|
.Dt CTLD 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm ctld
|
|
.Nd CAM Target Layer / iSCSI target daemon
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl d
|
|
.Op Fl f Ar config-file
|
|
.Op Fl u
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
daemon is responsible for managing the CAM Target Layer configuration,
|
|
accepting incoming iSCSI connections, performing authentication and
|
|
passing connections to the kernel part of the native iSCSI target.
|
|
.Pp
|
|
Upon startup, the
|
|
.Nm
|
|
daemon parses the configuration file and exits, if it encounters any errors.
|
|
Then it compares the configuration with the kernel list of LUNs managed
|
|
by previously running
|
|
.Nm
|
|
instances, removes LUNs no longer existing in the configuration file,
|
|
and creates new LUNs as necessary.
|
|
After that it listens for the incoming iSCSI connections, performs
|
|
authentication, and, if successful, passes the connections to the kernel part
|
|
of CTL iSCSI target, which handles it from that point.
|
|
.Pp
|
|
When it receives a SIGHUP signal, the
|
|
.Nm
|
|
reloads its configuration and applies the changes to the kernel.
|
|
Changes are applied in a way that avoids unnecessary disruptions;
|
|
for example removing one LUN does not affect other LUNs.
|
|
.Pp
|
|
When exiting gracefully, the
|
|
.Nm
|
|
daemon removes LUNs it managed and forcibly disconnects all the clients.
|
|
Otherwise - for example, when killed with SIGKILL - LUNs stay configured
|
|
and clients remain connected.
|
|
.Pp
|
|
To perform administrative actions that apply to already connected
|
|
sessions, such as forcing termination, use
|
|
.Xr ctladm 8 .
|
|
.Pp
|
|
The following options are available:
|
|
.Bl -tag -width ".Fl P Ar pidfile"
|
|
.It Fl f Ar config-file
|
|
Specifies the name of the configuration file.
|
|
The default is
|
|
.Pa /etc/ctl.conf .
|
|
.It Fl d
|
|
Debug mode.
|
|
The daemon sends verbose debug output to standard error, and does not
|
|
put itself in the background.
|
|
The daemon will also not fork and will exit after processing one connection.
|
|
This option is only intended for debugging the target.
|
|
.It Fl u
|
|
Use UCL configuration file format instead of the traditional non-UCL format.
|
|
.El
|
|
.Sh FILES
|
|
.Bl -tag -width ".Pa /var/run/ctld.pid" -compact
|
|
.It Pa /etc/ctl.conf
|
|
The configuration file for
|
|
.Nm .
|
|
The file format and configuration options are described in
|
|
.Xr ctl.conf 5 .
|
|
.It Pa /var/run/ctld.pid
|
|
The default location of the
|
|
.Nm
|
|
PID file.
|
|
.El
|
|
.Sh EXIT STATUS
|
|
The
|
|
.Nm
|
|
utility exits 0 on success, and >0 if an error occurs.
|
|
.Sh SEE ALSO
|
|
.Xr ctl 4 ,
|
|
.Xr ctl.conf 5 ,
|
|
.Xr ctladm 8 ,
|
|
.Xr ctlstat 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
command appeared in
|
|
.Fx 10.0 .
|
|
.Sh AUTHORS
|
|
The
|
|
.Nm
|
|
was developed by
|
|
.An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org
|
|
under sponsorship from the FreeBSD Foundation.
|