HP EVA P6550 HP P6300/P6500 EVA User Guide (5697-2486, September 2013) - Page 112

Installing and configuring for Red Hat 4 and SUSE 9, Assigning device names

Page 112 highlights

1. Use the iscsiadm command to control discovery and connectivity: # iscsiadm -m discovery -t st -p 10.6.0.33:3260 2. Edit the initiator name: # vi /etc/iscsi/initiatorname.iscsi 3. To start the iSCSI service use the service command: # service iscsi start 4. Verify that the iSCSI service autostarts: #chkconfig iscsi on NOTE: For more detail, see the man pages regarding the iscsiadm open-iscsi administration utility. Installing and configuring for Red Hat 4 and SUSE 9 To install and configure for Red Hat 4 and for SUSE 9: NOTE: The iSCSI driver is included with the Red Hat 4 and SUSE 9 distributions and is installed by default. Configuration is the same for Red Hat 3, 4, SUSE 8 and 9. 1. Update /etc/iscsi.conf to include the IP address of your iSCSI target. A sample configuration file might include entries like this: DiscoveryAddress=33.33.33.101 For a more detailed description of the configuration file format, enter: man iscsi.conf 2. Enter the following command to manually start iSCSI services to test your configuration: /etc/init.d/iscsi start 3. Modify the /etc/initiatorname.iscsi file to reflect a meaningful name for the initiator. For example: InitiatorName=iqn.1987-05.com.cisco:servername.yourcompany.com NOTE: In most cases, the only part of the file requiring modification is after the colon. If there are problems starting the iscsi daemon, they are usually caused by an incorrect IP Address or an ill-formatted initiator name. Installing the initiator for Red Hat 3 and SUSE 8 If you are upgrading from a previous installation of an iSCSI driver, HP recommends that you remove the /etc/initiatorname.iscsi file before installing the new driver. See the following website for the latest version of the Linux driver for EVA iSCSI connectivity: http://sourceforge.net/projects/linux-iscsi NOTE: The Linux driver supports both Red Hat 3 and SUSE 8. See the Readme file in the tar ball for more information on how to configure the Linux iSCSI Initiator. Assigning device names Because Linux assigns SCSI device nodes dynamically whenever a SCSI logical unit is detected, the mapping from device nodes such as /dev/sda or /dev/sdb to iSCSI targets and logical units may vary. Variations in process scheduling and network delay can result in iSCSI targets being mapped to different SCSI device nodes every time the driver is started. Because of this variability, configuring 112 iSCSI or iSCSI/FCoE configuration rules and guidelines

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1.
Use the
iscsiadm
command to control discovery and connectivity:
# iscsiadm
m discovery
t st
p 10.6.0.33:3260
2.
Edit the initiator name:
# vi /etc/iscsi/
initiatorname
.iscsi
3.
To start the iSCSI service use the
service
command:
# service iscsi start
4.
Verify that the iSCSI service autostarts:
#chkconfig iscsi on
NOTE:
For more detail, see the man pages regarding the iscsiadm open-iscsi administration
utility.
Installing and configuring for Red Hat 4 and SUSE 9
To install and configure for Red Hat 4 and for SUSE 9:
NOTE:
The iSCSI driver is included with the Red Hat 4 and SUSE 9 distributions and is installed
by default. Configuration is the same for Red Hat 3, 4, SUSE 8 and 9.
1.
Update
/etc/iscsi.conf
to include the IP address of your iSCSI target. A sample
configuration file might include entries like this:
DiscoveryAddress=33.33.33.101
For a more detailed description of the configuration file format, enter:
man iscsi.conf
2.
Enter the following command to manually start iSCSI services to test your configuration:
/etc/init.d/iscsi start
3.
Modify the
/etc/initiatorname.iscsi
file to reflect a meaningful name for the initiator.
For example:
InitiatorName=iqn.1987
05.com.cisco:
servername.yourcompany
.com
NOTE:
In most cases, the only part of the file requiring modification is after the colon.
If there are problems starting the iscsi daemon, they are usually caused by an incorrect IP Address
or an ill-formatted initiator name.
Installing the initiator for Red Hat 3 and SUSE 8
If you are upgrading from a previous installation of an iSCSI driver, HP recommends that you
remove the
/etc/initiatorname.iscsi
file before installing the new driver. See the following
website for the latest version of the Linux driver for EVA iSCSI connectivity:
h
t
tp://s
o
ur
ce
f
o
r
ge
.ne
t/pr
o
j
ec
ts/lin
u
x
-is
c
si
NOTE:
The Linux driver supports both Red Hat 3 and SUSE 8. See the
Readme
file in the tar ball
for more information on how to configure the Linux iSCSI Initiator.
Assigning device names
Because Linux assigns SCSI device nodes dynamically whenever a SCSI logical unit is detected,
the mapping from device nodes such as
/dev/sda
or
/dev/sdb
to iSCSI targets and logical
units may vary.
Variations in process scheduling and network delay can result in iSCSI targets being mapped to
different SCSI device nodes every time the driver is started. Because of this variability, configuring
112
iSCSI or iSCSI/FCoE configuration rules and guidelines