Installation guide

Logging In to an iSCSI Target

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Using our previous example (where proper_target_name is equallogic-iscsi1), the full

command would be:

iscsiadm --mode node --targetname \ iqn.2001-05.com.equallogic:6-8a0900-

ac3fe0101-63aff113e344a4a2-dl585-03-1 \ --portal 10.16.41.155:3260,0 --

21.13. Logging In to an iSCSI Target

As mentioned in Section 21.2, “iSCSI”, the iSCSI service must be running in order to discover or log

into targets. To start the iSCSI service, run:

service iscsi start

When this command is executed, the iSCSI init scripts will automatically log into targets where the

node.startup setting is configured as automatic. This is the default value of node.startup for

all targets.

To prevent automatic login to a target, set node.startup to manual. To do this, run the following

command:

iscsiadm -m node --targetname proper_target_name -p target_IP:port -o

update -n node.startup -v manual

Deleting the entire record will also prevent automatic login. To do this, run:

iscsiadm -m node --targetname proper_target_name -p target_IP:port -o

delete

To automatically mount a file system from an iSCSI device on the network, add a partition entry for

the mount in /etc/fstab with the _netdev option. For example, to automatically mount the iSCSI

device sdb to /mount/iscsi during startup, add the following line to /etc/fstab:

/dev/sdb /mnt/iscsi ext3 _netdev 0 0

To manually log in to an iSCSI target, use the following command:

iscsiadm -m node --targetname proper_target_name -p target_IP:port -l

Note

The proper_target_name and target_IP:port refer to the full name and IP address/

port combination of a target. For more information, refer to Section 21.2.1, “iSCSI API” and

Section 21.12, “ Scanning iSCSI Interconnects”.

21.14. Resizing an Online Logical Unit

In most cases, fully resizing an online logical unit involves two things: resizing the logical unit itself

and reflecting the size change in the corresponding multipath device (if multipathing is enabled on the

system).

To resize the online logical unit, start by modifying the logical unit size through the array management

interface of your storage device. This procedure differs with each array; as such, consult your storage

array vendor documentation for more information on this.