AIX boot from san will fail to boot when the bootlist is incorrect. This is described in EMC knowledge-base article EMC96502 “List of known ‘boot off fibre’ (Symmetrix or Clariion) issues”. The KB article states that the bootlist needs to be updated. This document illustrates in detail how to identify the correct hdisk boot lun and update the bootlist using the IVM.
Log on to the Integrated Virtualization Manager (prepare to boot the LPAR into SMS mode).
Select the correct AIX server. In this example it is “Production AIX” (click on the link).
Select “System Management Services (SMS)” as the boot mode.
Tick the select checkbox for the Production AIX LPAR and click on “ACTIVATE” to start the boot
Still with the system selected click on drop down “MORE TASKS” and on “Open Terminal Window” and logon.
Select option 5 “Select Boot Options” and press enter.
Select option 1 “Select Install/Boot device” and press enter.
Select option 7 “List all devices”
Wait for the list to populate
In this step we identify what the boot device should be. In this case it is the 19 GB disk. Take note of the disk Label /name. e.g. “U7998.61X.061EE9A-V2-C2-T1-L8300000000000” (we really only need the the part starting "V2..") We will use this later on to work out the hdisk number of the boot lun.
Select “X” to exit out of SMS.
Change back to the IVM and “SHUTDOWN” the “Production AIX”
Select the “Production AIX” label and Select “Diagnostic with default boot list (DIAG_DEFAULT)”.
select OK and ACTIVATE “Production AIX
Now “Open Terminal Window” again whilst the server is booting up and login.
Arrow Down to “resource Selection”
Locate the disk with the same label identified earlier. Note the hdisk number, this is the boot lun hdisk number.
F10 to exit from the Resource Selection list and arrow up to “Task Selection” and press enter
Arrow down to “Display or Change Boot list”
[enter] on “Normal mode bootlist”
[enter] on “Display Current Bootlist”
Note that hdisk6 in in the current bootlist, which is incorrect as we identified that the boot device is hdisk4.
Exit the “Current bootlist” screen and select “Alter Current Bootlist”
With insertion block in hdisk6 hit F5 (ESC+5) to remove it as default boot disk. NOTE that in a multi-path environment there will be multiple hdisk numbers to the same boot device. The bootlist should contain ALL hdisk numbers for the boot device. This is particularly important in active/passive arrays like Clariion / VNX so a boot is successful even if the luns has been trespassed.
Arrow down to hdisk4 and type: 1 and then hit F7 (ESC+7)
When the screen below comes up, press enter, then exit using F3 (Esc+3) all the way out
F3 to exit
Once system halts jump back into IVM and change back Boot Mode to NORMAL
ACTIVATE “ProductionAIX” lpar
In the IVM, jump into “Open Terminal Window” and watch the system boot successfully from hdisk4.
On IVM screen the Production AIX partition is now “Running”