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====== AIX diag command ======

====== Show LED status on AIX ======

===== identify a device =====

You 'll be prompt to press [Enter] to stop led:
<cli prompt='#'>
# diag -d hdisk0  -T "identifyRemove -a identify"
</cli>

Turning off diagnostic lights (LED) on a power server, or partition
<cli prompt='#'>
# /usr/lpp/diagnostics/bin/usysfault -s normal 
</cli>

List LED status on LPAR, all components, and on a single disk
<cli prompt='#'>
[root@viotsth5]/home/padmin# /usr/lpp/diagnostics/bin/usysfault
normal
[root@viotsth5]/home/padmin# /usr/lpp/diagnostics/bin/usysfault -t
U8286.42A.21343CW
U78CD.001.FZH8729-P1
U78CD.001.FZH8729-P1-C4
U78CD.001.FZH8729-P1-C5
U78CD.001.FZH8729-P1-C6
U5887.001.G5A902G
U5887.001.G5A902G-P1-D13
U5887.001.G5A902G-P1-D14
U5887.001.G5A902G-P1-D15
U5887.001.G5A902G-P1-D16
U5887.001.G5A902G-P1-D17
U5887.001.G5A902G-P1-D18
U5887.001.G5A902G-P1-C1
U5887.001.G5A902G-P1-C2
[root@viotsth5]/home/padmin# /usr/lpp/diagnostics/bin/usysident -d hdisk1
normal
</cli>

Change LED status on hdisk1
<cli prompt='#'>
[root@viotsth5]/home/padmin# /usr/lpp/diagnostics/bin/usysident -s identify -d hdisk1
[root@viotsth5]/home/padmin# /usr/lpp/diagnostics/bin/usysident -d hdisk1
identify
[root@viotsth5]/home/padmin# /usr/lpp/diagnostics/bin/usysident -s normal -d hdisk1
[root@viotsth5]/home/padmin# /usr/lpp/diagnostics/bin/usysident -d hdisk1
normal
</cli>

===== apply firmware on a device =====

Install (download) the microcode
<cli prompt='#'>
# diag -d fcs0 -T download
</cli>

Description about: "M", "L", "C", "P" when choosing the microcode:

    "M" is the most recent level of microcode found on the source.
    It is later than the level of microcode currently installed on the adapter.  
                                             
    "L" identifies levels of microcode that are later than the level of microcode currently installed on the adapter.
    Multiple later images are listed in descending order.                

    "C" identifies the level of microcode currently installed on the adapter.                        
                                                 
    "P" identifies levels of microcode that are previous to the level of microcode currently installed on the adapter.
    Multiple previous images are listed in the descending order. 

List firmware level
<cli prompt='#'>
# lsmcode -A 
</cli>

To Back level the firmware
<cli prompt='#'>
# diag -d fcsX -T "download -f -l previous"
</cli>

===== apply firmware on a device =====

Install (download) the microcode
<cli prompt='#'>
# /usr/lpp/diagnostics/bin/usysident ? 
    usage: usysident [-s {normal | identify}] 
                     [-l location code | -d device name]
           usysident [-t] 
</cli>

To check the LED status of the system:
<cli prompt='#'>
# /usr/lpp/diagnostics/bin/usysident 
normal 
</cli>

To check the LED status of /dev/hdisk1:
<cli prompt='#'>
# /usr/lpp/diagnostics/bin/usysident -d hdisk1 
normal
</cli>

To activate the LED of /dev/hdisk1:
<cli prompt='#'>
# /usr/lpp/diagnostics/bin/usysident -s identify -d hdisk1 
# /usr/lpp/diagnostics/bin/usysident -d hdisk1 
identify
</cli>

To turn of the LED again of /dev/hdisk1:
<cli prompt='#'>
# /usr/lpp/diagnostics/bin/usysident -s normal -d hdisk1 
# /usr/lpp/diagnostics/bin/usysident -d hdisk1 
normal
</cli>
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