HP 3PAR RedHat and Oracle Linux Implementation Guide

2. The contents of the discovery can be viewed using the iscsiadm -m discovery command.

For example:

# iscsiadm -m discovery

10.100.0.101:3260 via sendtargets

3. Issue the iscsiadm -m node command:

# iscsiadm -m node

10.100.1.101:3260,31 iqn.2000-05.com.3pardata:20320002ac000121

4. Identify the iSCSI node login that record has been discovered from the discovery process.

iscsiadm -m node -T <targetname> -p <target ip address>:<iscisport>

-l.

For example:

# iscsiadm -m node -T iqn.2000-05.com.3pardata:20310002ac000079 -p 10.100.0.101:3260 -l

Logging in to [iface: default, target: iqn.2000-05.com.3pardata:20310002ac000079, portal: 10.100.0.101,3260]

5. The content of the login node can be viewed using the iscsiadm command.

For example:

# iscsiadm -m node -T iqn.2000-05.com.3pardata:20310002ac000079 -p 10.100.0.101:3260

10.100.0.101:3260,31 iqn.2000-05.com.3pardata:20310002ac000079

6. Now examine the iSCSI session and content session of the node info by issuing iscsiadm

-m session.

For example:

# iscsiadm -m session

tcp: [1] 10.100.0.101:3260,31 iqn.2000-05.com.3pardata:20310002ac000079

See “RHEL iscsiadm Utility Usage” (page 24) for more RHEL iscsiadm command usage.

In RHEL 5.4, the open-iSCSI persistent configuration is implemented as a DBM database

available during the Linux iSCSI installation.

• Discovery table (/var/lib/iscsi/send_targets)

• Node table (/var/lib/iscsi/nodes)

The following example shows settings for send_targets and node tables:

send_targets/

drw------- 2 root root 4096 Feb 26 16:51 10.102.2.131,3260

drw------- 2 root root 4096 Feb 26 10:22 10.102.2.31,3260

nodes/

drw------- 3 root root 4096 Feb 26 10:22 iqn.2000-05.com.3pardata:20310002ac0000b1

drw------- 3 root root 4096 Feb 26 10:58 iqn.2000-05.com.3pardata:21310002ac0000b1

To change or modify the send_targets or nodes, remove the above entry first to use the

iscsiadm utility to add the new send_targets or nodes, after which the persistent tables

will update.

80 Configuring a Host with iSCSI