This article contains helpful iSCSI commands.

Requirements

• CLI access to hosts

• iSCSI storage connections

Discover available targets from a discovery portal:

iscsiadm -m discovery -t sendtargets -p ipaddress

Login to all targets:

iscsiadm -m node -l

Log into a specific target:

iscsiadm -m node -T targetname -p ipaddress -l

Log out of all targets:

iscsiadm -m node -u

Log out of a specific target:

iscsiadm -m node -T targetname -p ipaddress -u

Display information about a target:

iscsiadm -m node -T targetname -p ipaddress

Display statistics of a target:

iscsiadm -m node -s -T targetname -p ipaddress

Display a list of all current sessions logged in:

iscsiadm -m session

View iSCSI database regarding discovery:

iscsiadm -m discovery -o show

View iSCSI database regarding targets to login to:

iscsiadm -m node -o show

View iSCSI database regarding sessions logged in to:

iscsiadm -m session -o show

Find the newly created device name, using the iscsiadm command. In this test configuration, the new volume is /dev/sdb. At the end of the output you could see attached scsi disk name.

iscsiadm -m session -P3

When you expand the volume or disk, you might need to rescan. So the below command will help:

iscsiadm -m node -p ipaddress --rescan