HP 3PAR Ubuntu Operating System Implementation Guide

Enabling Multipath
1. Use cat /etc/init.d/multipath-tools to show the start/stop run levels for the
multipath daemon:
# cat /etc/init.d/multipath-tools
#! /bin/sh
### BEGIN INIT INFO
# Provides: multipath-tools
# Required-Start: udev $local_fs$syslog
# Required-Stop: udev $local_fs$syslog
# Should-Start: iscsi
# Should-Stop: iscsi
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: multipath daemon
# Description:
### END INIT INFO
<...>
2. Check that the appropriate rc scripts have been created for each run level. The start number(s)
may not match those shown here.
# ls -l /etc/rc?.d/S*multipath-tools
/etc/rc2.d/S20multipath-tools
/etc/rc3.d/S20multipath-tools
/etc/rc4.d/S20multipath-tools
/etc/rc5.d/S20multipath-tools
# ls -l ls -l /etc/rc?.d/K*multipath-tools
/etc/rc0.d/K20multipath-tools
/etc/rc1.d/K20multipath-tools
/etc/rc6.d/K20multipath-tools
3. Use the multipath -v 3 command to obtain more detailed information about Device-mapper
nodes and their associated paths.
See also “Displaying Detailed Device-mapper Node Information” (page 29) for multipath
options.
Starting the iSCSI Daemon for Ubuntu
You can use either the various open-iSCSI utilities available from the CLI or YAST to configure and
start open-iSCSI on Ubuntu. This document refers to the open-iSCSI CLI utilities.
To start the open-iSCSI, complete the following steps:
1. Run the init script that is installed with open-scsi package at /etc/init.d. The
/etc/init.d/open-iscsi script uses the following options:
{start|stop|restart|force-reload|status|starttargets|stoptargets|restarttargets}
For example:
# /etc/init.d/open-iscsi start
14 Configuring the HP 3PAR StoreServ Storage for iSCSI