The answer is, it depends. I am not sure what exactly your script is doing but it looks like it is doing a filesystem check of some sorts using veritas filesystem. The actual litmus test of dual fibrechannel connectivity goes thru the additional commands introduced by your sam device. So, there is no one single command to test this. If you are running EMC, it will be something, if it is XP-xxxx array or VA-xxxx it will be all be different from each other.
From the volume manager perspective, if you are running in an LVM environment, you can do something like this:
for VG in `strings /etc/lvmtab | grep vg | grep -v vg00`
do
MainPathCount=`vgdisplay -v $VG | grep "PV Name" | grep -v Alternate | wc -l`
AltrPathCount=`vgdisplay -v $VG | grep "PV Name" | grep Alternate | wc -l`
if [ ${MainPathCount} != ${AltrPathCount} ]
then
echo "$VG has single path LUNs"
fi
done
this procedure has gaping holes in it as it does not do any error checks and it assumes your volume group names has character string "vg" in them. But it is just to give you an idea.
The correct way of doing it is via SAM related commands by mapping out devices and parsing the output.
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UNIX because I majored in cryptology...
