====== Ubuntu ISCSI ======
===== install =====
<file>
sudo apt-get install open-iscsi
</file>
enable auto login<file conf /etc/iscsi/iscsid.conf>
...
node.startup = automatic
...
</file>

===== discovery =====

<file>
iscsiadm -m discovery -t st -p <IP>
</file>

===== login =====
<file>
iscsiadm -m node --targetname "<TARGET_NAME>" --login
</file>

===== logout =====
<file>
iscsiadm -m node --targetname "<TARGET_NAME>" --logout
</file>

==== Discover Targets from ISCSI Portal ====
<file>
iscsiadm -m discovery -p <IP>:<PORT>
</file>
==== Refresh LUNS of ISCSI Target ====
<file>
iscsiadm -m node -R
</file>
==== Logout of all Targets ====
<file>
iscsiadm -m node -u
</file>
==== Login to all Targets ====
<file>
iscsiadm -m node -l
</file>

==== Logout of a Target ====
<file>
iscsiadm -m node -T <TARGETNAME> -u
</file>
==== Logout to a Target ====
<file>
iscsiadm -m node -T <TARGETNAME> -l
</file>


====== iSCSI Target (FreeBSD) ======
===== reload (DON"T RESTART DAEMON) =====
<file>
killall -HUP istgt
</file>
or <file>
/usr/local/etc/rc.d/istgt reload
</file>

===== Example LU entry =====
<file>
[LogicalUnit<##>]
  TargetName "<NAME>"
  TargetAlias "<NAME>"
  Mapping PortalGroup1 InitiatorGroup1
  AuthMethod Auto
  UseDigest Auto
  ReadOnly No
  UnitType Disk
  UnitInquiry "FreeBSD" "iSCSI Disk" "0123" "10000001"
  UnitOnline yes
  BlockLength 512
  QueueDepth 32
  LUN0 Storage <PATH> <SIZE>|auto
  LUN0 Option Serial 100000010
</file>
===== Example ctl.conf =====
<file ctl /etc/ctl.conf>
portal-group pg0 {
        discovery-auth-group no-authentication
        listen 0.0.0.0
        listen [::]
}

target iqn.zfs1.bsdnet.us:fileTarget {
        auth-group no-authentication
        portal-group pg0

        lun 0 {
                path /vol1/iscsi/fileTarget
                size 20G
        }
}
</file>

===== Ctladm =====

==== Device List ====
<file>
ctladm devlist -v
</file>

==== Port List ====
<file>
ctladm portlist -v
</file>

==== Resize LUN ====
  * use ctladm lunlist to get the <LUNID>
<file>
ctladm modify -b block -l <LUNID> s <NEWSIZE_IN_BYTES>
</file>

==== List iSCSI sessions ====
<file>
ctladm islist -v
</file>