RW ≤REAL_AMP≥RO target for different IQN

If you want to divide access to target, for example NTFS to read-only and read-write per iqn, you have to set scst like this:

TARGET_DRIVER iscsi {
        enabled 1


        TARGET iqn.2015-01.cz.test:iscsi.shared {
                IncomingUser "test TESTPASS1111"
                allowed_portal 192.168.1.108
                cpu_mask f
                enabled 1
                rel_tgt_id 1

                GROUP rwgr {
                        INITIATOR iqn.1991-05.com.microsoft:win7-linux-pc
                        LUN 0 iscsi_alc_shr
                }

                GROUP rogr {
                        INITIATOR iqn.1991-05.com.microsoft:acer-linux
                        LUN 0 iscsi_alc_shr {
                            read_only 1
                        }
                }



        }

}