This blog describes the steps to setup S7420 storage as iSCSI device.
Verify that the iscsi initiator service is enabled on the Solaris initiator. If not, enable the service.
root@dat02:~# svcs | grep initiator
online Jun_08 svc:/system/fcoe_initiator:default
online Jun_08 svc:/network/iscsi/initiator:default
Log on to Solaris initiator and find out the IQN value of the server and the number of configured sessions
root@dat02:~# iscsiadm list initiator-node
Initiator node name: iqn.1986-03.com.sun:01:002128f52ca4.4fb2e431
Initiator node alias: dat02
Login Parameters (Default/Configured):
Header Digest: NONE/-
Data Digest: NONE/-
Max Connections: 65535/-
Authentication Type: NONE
RADIUS Server: NONE
RADIUS Access: disabled
Tunable Parameters (Default/Configured):
Session Login Response Time: 60/-
Maximum Connection Retry Time: 180/-
Login Retry Time Interval: 60/-
Configured Sessions: 1
Solaris initiator can use the target only after configuring a discovery method (a way to identify targets on the network). Solaris supports three discovery methods
- static discovery
- SendTargets
- iSNS
The following commands list which discovery method is enabled
root@dat02:~# iscsiadm list discovery
Discovery:
Static: disabled
Send Targets: enabled
iSNS: disabled
The following commands enables the sendTarget discovery method
SendTargets:
Enable the send target discovery method and add the IP address of the target (storage) to the discovery address.
root@dat02:~# iscsiadm modify discovery --sendtarget enable
root@dat02:~# iscsiadm add discovery-address 10.129.195.222
You can list the IP address of target that is discovered by the server using the list command:
root@dat01:/etc# iscsiadm list discovery-address
Discovery Address: 10.129.195.222:3260
The following commands deletes a particular iSCSI target from discovery list :
root@dat01:/etc# iscsiadm remove discovery-address 10.129.195.222
root@dat01:/etc# iscsiadm list target -vS
This discovery method can be disabled as under:
iscsiadm modify discovery --sendtargets disable
Once the initiator is configured with a valid discovery method, the initiator should see one or more targets by issuing the list target subcommand
iscsiadm list target
root@dat02:~# iscsiadm list target
Target: iqn.1986-03.com.sun:02:b3c7500a-b7ca-c791-a949-d79bf0862c17
Alias: iscsi-target
TPGT: 2
ISID: 4000002a0000
Connections: 1
To get the list of all the LUNs exposed to the server, use -S option
root@dat02:~# iscsiadm list target -help
iscsiadm: '-h': invalid option
iscsiadm list target [OPTIONS] [<target-name ...>]
OPTIONS:
-v, --verbose
-S, --scsi-target
For more information, please see iscsiadm(1M)
root@dat02:~# iscsiadm list target -vS
Target: iqn.1986-03.com.sun:02:b3c7500a-b7ca-c791-a949-d79bf0862c17
Alias: iscsi-target
TPGT: 2
ISID: 4000002a0000
Connections: 1
CID: 0
IP address (Local): 10.129.195.190:32957
IP address (Peer): 10.129.195.222:3260
Discovery Method: SendTargets
Login Parameters (Negotiated):
Data Sequence In Order: yes
Data PDU In Order: yes
Default Time To Retain: 20
Default Time To Wait: 2
Error Recovery Level: 0
First Burst Length: 65536
Immediate Data: yes
Initial Ready To Transfer (R2T): yes
Max Burst Length: 262144
Max Outstanding R2T: 1
Max Receive Data Segment Length: 32768
Max Connections: 32
Header Digest: NONE
Data Digest: NONE
LUN: 3
Vendor: SUN
Product: ZFS Storage 7420
OS Device Name: /dev/rdsk/c0t600144F0EE8675B100004FD626260006d0s2
LUN: 2
Vendor: SUN
Product: ZFS Storage 7420
OS Device Name: /dev/rdsk/c0t600144F0EE8675B100004FD61BBC0005d0s2
LUN: 1
Vendor: SUN
Product: ZFS Storage 7420
OS Device Name: /dev/rdsk/c0t600144F0EE8675B100004FD39DE50004d0s2
LUN: 0
Vendor: SUN
Product: ZFS Storage 7420
OS Device Name: /dev/rdsk/c0t600144F0EE8675B100004FD39CC80003d0s2
On the storage side:
Go to Configuration->SAN-> and setup target and initiator portal. There is a default target and initiator created which can be used as well.
Go to Confiiguration->Storage pool and create a new storage pool if required
Go to Shares->Project and create a new project.
Add LUNS to these project and select the target and initiator portals for the LUNS.(the default ones or the ones you created for extra security). You can select the target and initiator options under the Protocol sections when you edit the LUN
You do not need to create target and initiator group. The default ones work one. If you can discovery address and cannot view the target, check /var/adm/messages for any error messages. Try restarting iSCSI service on target ZFSSA and reboot the Solaris server , if needed.
Additional info:
http://prefetch.net/articles/solarisiscsi.html
http://sosc-dr.sun.com/bigadmin/features/articles/7000_oracle_iscsi_asm.pdf
http://www.youtube.com/watch?feature=endscreen&NR=1&v=iETgvITMQ1w
http://www.oracle.com/technetwork/articles/servers-storage-admin/o11-104-iscsi-luns-linux-518400.html
