HP 3PAR Solaris Implementation Guide

automatically discover the target without the need to issue devfsadm. However, if any change

is made in the target discovery address or method, a devfsadm command must be issued to

reconfigure the altered discovery address.

2. Verify the discovered targets.

# iscsiadm list target

Target: iqn.2000-05.com.3pardata:21310002ac00003e

Alias: -

TPGT: 131

ISID: 4000002a0000

Connections: 1

3. The Solaris iSCSI initiator sets the Max Receive Data Segment Length target parameter

to a value of 8192 bytes and this variable determines the amount of data the HP 3PAR

StoreServ Storage can receive or send to the Solaris host in a single iSCSI PDU. This parameter

value should be changed to 65536 bytes for better I/O throughput and the capability to

handle large I/O blocks. The following command should be used to change the parameter

and should be set on each individual target port.

# iscsiadm modify target-param -p maxrecvdataseglen=65536 <target iqn name>

Example:

a. List the default target settings used by the iSCSI Initiator.

# iscsiadm list target-param -v

Target: iqn.2000-05.com.3pardata:21310002ac00003e

---

Max Receive Data Segment Length: 8192/-

b. List the target settings negotiated by the iSCSI Initiator.

# iscsiadm list target -v

Target: iqn.2000-05.com.3pardata:21310002ac00003e

Max Receive Data Segment Length: 8192

c. Change the value from 8192 to 65536 for all target ports.

# iscsiadm modify target-param -p maxrecvdataseglen=65536

iqn.2000-05.com.3pardata:21310002ac00003e

d. Verify that the changed value is set.

# iscsiadm list target-param -v

Target: iqn.2000-05.com.3pardata:21310002ac00003e

---

Max Receive Data Segment Length: 8192/65536

---

# iscsiadm list target -v

Target: iqn.2000-05.com.3pardata:21310002ac00003e

Setting Up the iSCSI Initiator for Target Discovery 47