IBM AIX VIO server: diskinfo script to rebuild disk mappings

cut -> /usr/bin/cut
tr -> /usr/bin/tr

Place the following code into the main script – diskinfo is what I’ve called it.

hostname=$(ioscli hostname)
mapall=$(ioscli lsmap -all -type disk -field backing vtd |cut -c 22- | sed 's/^$/:/' |tr '\n' ' ')
for disk in $(ioscli lsdev -type disk |grep -v "Virtual Target Device" |grep -v ^name |awk '{print $1}')
do
        presentedas=unpresented
        vhostadapter=novhost
        wwn=WWNNOTAPPLICABLE
        disksn=NONE
        parent1=$(ioscli lsdev -dev $disk -parent |tail +3)
        parent2=$(ioscli lsdev -dev $parent1 -parent |tail +3)
        echo $parent2 |grep -q ^pci
        if [ $? == 1 ]; then
        wwn=$(ioscli lsdev -dev $parent2 -vpd |grep "Network Address" \
                |awk -F. '{print $NF}')
        disksn=$(ioscli lsdev -dev $disk -vpd | awk '/Z1/ { print substr($2,length($2)-3,4)}')
        disksize=$(ioscli lspv -size $disk)
        fi
        presentedas=$(echo $mapall |tr ':' '\n' |grep "$disk "|awk '{print $2}')
        if [ ! -z $presentedas ];then
        vhostadapter=$(ioscli lsdev -dev $presentedas -parent |grep ^v)
        else
        presentedas=unpresented
        vhostadapter=novhost
        fi
        echo $hostname,$wwn,$parent1:$parent2,$disksn,$disk,$disksize,$vhostadapter,$presentedas
done

As the standard padmin user id, run ‘diskinfo’ or whatever you have called the script.

hostname,primary_wwn,adapter_name,hdisk,size,vhost,device
myvio01,10000000D999D999,fscsi0:fcs0,E1E1,hdisk99,25000,vhost1,mylpar01

Now you may have noticed the WWNNOTAPPLICABLE, … as is the case in some instances, if you have asymmetrical presentation, eg 10 disks on one vio and 8 on another… the hdisk#’s can get out of sync between the two VIOs.
A workaround I have been using is to create dummy disks as filers, so the same mkvdev commands can be run on both VIO servers….

This script presumes that you have defined a device label during the creation of the VTD eg. mylpar01 in the following line.

mkvdev -vdev hdisk99 -vadapter vhost1 -dev mylpar01

This script looks like it can be refined and made much faster, but keep in mind that this script is written to run as the padmin user id and not root. The padmin account has many restrictions, and writing out files for use in scripts is one of them.

I have attempted to make the script run as quickly as possible by working on the outputs stored in variables.

What I have been doing is running this script, then using excel, data>import data>import data, and selecting the text file containing the output of the above script.

Then using the following excel command to build the mkvdev commands to rebuild.
=CONCATENATE(“mkvdev -vdev “,F2,” -vadapter “,G2,” -dev “,H2)

Hope this helps someone