Question:

How to find out which HBA active path goes through on a system with HDLM?

 

Answer:

 

Solution 1:

Use lspath to show all the paths to the disk.

 

  • lsdev -l hdisk3
hdisk3 Available 01-09-02 Hitachi Disk Array (Fibre)

 

  • lspath -l hdisk3
Enabled hdisk3 fscsi0
Enabled hdisk3 fscsi1

Solution 2:

Use dlnkmgr command to figure out the HBA location code and then use lsdev to figure out the FCS number. For example:

  • dlnkmgr view -hba
HbaID Port.Bus IO-Count   IO-Errors  Paths  OnlinePaths
00000 08.04         45031          0      4           4
00001 08.03         45999          0      4           4
  • lsdev | grep fcs
fcs0          Available 03-08    FC Adapter
fcs1          Available 04-08    FC Adapter

For this example, HbaID 00000 (08.04) corresponds to fcs1 (04-08). You can then use lscfg to get the actual hardware path.

 

I wrote a script to find out the all the active HBA and the WWNs.

for loc in $(/usr/DynamicLinkManager/bin/dlnkmgr view -path  \
|awk '/hdisk/ {print $2}'|awk -F. '{print $2"-"$1}'|sort|uniq);  \
do hba=$(lsdev -Ccadapter -S A|awk '/'$loc'/ {print $1}') ; \
wwn=$(lscfg -vl $hba | awk -F. '/Network Address/ {print $NF}'); \
echo $hba $wwn ; done

fcs0 10000000C972EBAE
fcs3 10000000C972EA4B

If your system is a VIO client and does not use HDLM, then use:

for i in $(lspath|awk '/fscsi/ {print $3}'|uniq|awk -Ffscsi '{print $NF}'); \
do wwn=$(lscfg -vl fcs$i | awk -F. '/Network Address/ {print $NF}'); echo fcs$i $wwn;done

fcs0 C05076038CFC0120
fcs1 C05076038CFC0122
fcs2 C05076038CFC0124
fcs3 C05076038CFC0126