2015-01-01 Set Up DNS and iSCSI
2014-12-29 Set Up redfern1
2015-04-04 Create REDFERN1 with OEL7

Contents

  1. 1 Overview
  2. 2 References
  3. 3 Procedure
    1. 3.1 Update DNS
    2. 3.2 Create iSCSI Devices
      1. 3.2.1 Create New LUN Group
      2. 3.2.2 Create New LUNs
      3. 3.2.3 Configuring an iSCSI Initiator

Overview

With REDFERN1 set up with networking, memory, and extra local disk space, it is now time to configure DNS and iSCSI disks.

References

Procedure

Update DNS

Used the procedure at DNS to implement the new IP addresses documented at IP Addresses .

Create iSCSI Devices

Create New LUN Group

On NARRABRI , I created a new LUN group called REDFERN for target, iqn.1994-11.com.netgear:narrabri:4eca4c51:redfern .

Create New LUNs

Using the design at Planning , the following LUNs were created NARRABRI :

Volume Name Description Bit Rot Protection Compression Snapshot Schedule Provision Size (GB)
data REDFERN_DATA DATA disk group for REDFERN cluster No No Never Thick 50
REDFERN_FRA FRA disk group for REDFERN cluster 75
REDFERN_REDO1 REDO1 disk group for REDFERN cluster 5
REDFERN_REDO2 REDO2 disk group for REDFERN cluster 5
REDFERN_VOTE VOTE disk group for REDFERN cluster 5

All of these LUNs are assigned to the REDFERN LUN group.

Configuring an iSCSI Initiator

Followed the procedure in 17.6.2 Configuring an iSCSI Initiator .

Install Package

Ran the following command as root :

yum install iscsi-initiator-utils

The output is: 

Loaded plugins: refresh-packagekit, security
ol6_UEK_latest                                                                         | 1.2 kB     00:00
ol6_latest                                                                             | 1.4 kB     00:00
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package iscsi-initiator-utils.x86_64 0:6.2.0.873-13.0.1.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================================================
 Package                         Arch             Version                          Repository            Size
==============================================================================================================
Installing:
 iscsi-initiator-utils           x86_64           6.2.0.873-13.0.1.el6             ol6_latest           720 k

Transaction Summary
==============================================================================================================
Install       1 Package(s)

Total download size: 720 k
Installed size: 2.4 M
Is this ok [y/N]: y
Downloading Packages:
iscsi-initiator-utils-6.2.0.873-13.0.1.el6.x86_64.rpm                                  | 720 kB     00:01
warning: rpmts_HdrFromFdno: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY
Retrieving key from http://public-yum.oracle.com/RPM-GPG-KEY-oracle-ol6
Importing GPG key 0xEC551F03:
 Userid: "Oracle OSS group (Open Source Software group) <build@oss.oracle.com>"
 From  : http://public-yum.oracle.com/RPM-GPG-KEY-oracle-ol6
Is this ok [y/N]: y
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : iscsi-initiator-utils-6.2.0.873-13.0.1.el6.x86_64                                          1/1
  Verifying  : iscsi-initiator-utils-6.2.0.873-13.0.1.el6.x86_64                                          1/1

Installed:
  iscsi-initiator-utils.x86_64 0:6.2.0.873-13.0.1.el6

Complete!
Discover Targets on Narrabri

When I tried the command described in the manual, I got the following result: 

[root@redfern2 ~]# iscsiadm -m discovery --type sendtargets --portal 192.168.1.253
iscsiadm: Please specify portal as <ipaddr>[:<ipport>]

Instead of using the command described, I used the example from the info page to interrogate NARRABRI (192.168.1.253) : 

iscsiadm --mode discoverydb --type sendtargets --portal 192.168.1.253 --discover

The result is: 

Starting iscsid:                                           [  OK  ]
192.168.1.253:3260,1 iqn.1994-11.com.netgear:narrabri:69444463:ovmvictoria
192.168.1.253:3260,1 iqn.1994-11.com.netgear:narrabri:4eca4c51:redfern
Establish a Session 
iscsiadm --mode node --targetname iqn.1994-11.com.netgear:narrabri:4eca4c51:redfern --portal 192.168.1.253:3260 --login

This failed with the following error messages: 

Logging in to [iface: default, target: iqn.1994-11.com.netgear:narrabri:4eca4c51:redfern, portal: 192.168.1.253,3260] (multiple)
iscsiadm: Could not login to [iface: default, target: iqn.1994-11.com.netgear:narrabri:4eca4c51:redfern, portal: 192.168.1.253,3260].
iscsiadm: initiator reported error (24 - iSCSI login failed due to authorization failure)
iscsiadm: Could not log into all portals

I changed the properties for the REDFERN group to Allowed Initiators: Any . The result is now: 

Logging in to [iface: default, target: iqn.1994-11.com.netgear:narrabri:4eca4c51:redfern, portal: 192.168.1.253,3260] (multiple)
Login to [iface: default, target: iqn.1994-11.com.netgear:narrabri:4eca4c51:redfern, portal: 192.168.1.253,3260] successful.

However, I am getting the following errors: 

WARNING: at block/genhd.c:1474 __disk_unblock_events+0x10e/0x120()

This looks like I have a problem with OEL6u3 and iSCSI on NetGear ReadyNAS.