IBM System Storage DS4000, Hardware Manual

Page: 483 / 566

Chapter 7. Advanced maintenance, troubleshooting, and diagnostics
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Controller 'A' Path
--------------------
NumLunObjects: 2 RoundRobinIndex: 0
Path #1: LunPathDevice: present
DevState: OPTIMAL
RemoveState: 0x0 StartState: 0x1 PowerState: 0x0
Path #2: LunPathDevice: present
DevState: OPTIMAL
RemoveState: 0x0 StartState: 0x1 PowerState: 0x0
Controller 'B' Path
--------------------
NumLunObjects: 2 RoundRobinIndex: 0
Path #1: LunPathDevice: present
DevState: FAILED_NEED_CHECK<--------------------------------Failed
RemoveState: 0x0 StartState: 0x1 PowerState: 0x0
Path #2: LunPathDevice: present
DevState: FAILED_NEED_CHECK<--------------------------------Failed
RemoveState: 0x0 StartState: 0x1 PowerState: 0x0
Verify RDAC installation
To verify the installation of RDAC, you have many different commands available. Chose the
right command that displays the output you want. You can use one of the following options:
򐂰 Type the following command to list the installed modules:
# lsmod
Verify that the module entries are included in the lsmod list, as follows:
– Module entries for SLES or RHEL:
• mppVhba
• mppUpper
• lpfc for Emulex HBAs
• qla2xxx for Qlogic HBAs
• lpfcdfc (if ioctl module for Emulex HBAs is installed)
– mppVhba and MppUpper are RDAC modules.
Note: If you do not see the mpp_Vhba module, the likely cause is that the server was
rebooted before the LUNs were assigned, so the mpp_Vhba module was not installed.
If this is the case, assign the LUNs now, reboot the server, and repeat this step.