Setting up COMSTAR and iSCSI target

COMSTAR is a framework designed to turn an OpenSolaris or Nexenta host into an iSCSI target.

1. Enabling COMSTAR service

Check if the service is running:

svcs | grep iscs

To enable it, run:

svcadm enable -s stmf
svcadm enable -s iscsi/target

2. Create ZPOOL

zpool create tank raidz ... ... ...

3. Create ZFS volumes

This command creates a 500MB volume called "zvol1" on pool "tank".

zfs create -V 500m tank/zvol1

4. Creating a logical unit

sbdadm create-lu /dev/zvol/rdsk/tank/zvol1

To get a list of all GUID, run

sbdadm list-lu

Found 1 LU(s)

              GUID                    DATA SIZE           SOURCE
--------------------------------  -------------------  ----------------
600144f0bb8dc70000004bb607cb0001  524288000            /dev/zvol/rdsk/tank/zvol1

or use the command

stmfadm list-lu -v

LU Name: 600144F0BB8DC70000004BB607CB0001
    Operational Status: Online
    Provider Name     : sbd
    Alias             : /dev/zvol/rdsk/tank/zvol1
    View Entry Count  : 1
    Data File         : /dev/zvol/rdsk/tank/zvol1
    Meta File         : not set
    Size              : 524288000
    Block Size        : 512
    Management URL    : not set
    Vendor ID         : NEXENTA
    Product ID        : COMSTAR
    Serial Num        : not set
    Write Protect     : Disabled
    Writeback Cache   : Enabled
    Access State      : Active

5. Create a iSCSI target

stmfadm add-view 600144f0bb8dc70000004bb607cb0001
itadm create-target

6. List iSCSI targets

To list existing targets, run

itadm list-target

TARGET NAME                                                  STATE    SESSIONS
iqn.1986-03.com.sun:02:12ae2d06-0422-ccb2-b6a1-ba9b68010df6  online   0
iqn.1986-03.com.sun:02:a866ca6d-42d5-6c5f-e404-da279962f62e  online   0

7. Web-UI

If you do not like to manage iSCSI/Comstar via CLI, you could also use napp-it web-UI and set Comstar and FCOE Settings via your Browser. Napp-it supports Logical Units, Targets with Authentication, Views, Target Groups, Target Portal Groups, Host-Groups, Initiators and FCOE with online help and explanation.