Script to locate incorrect path to disk on Netapp

One of the storage guys sent me an email indicating some of the disk paths were incorrect on some of our newer servers - specifically they were sending data over partner paths to disk (we have 2 heads in a cluster on that filer, so unless its in failover mode, its less efficient to send data via the partner path to disk).

So I wrote a quick script to check the paths on all hosts against the list of erroring paths he sent me:

rm -rf /root/lunerrors.txt
touch /root/lunerrors.txt
for host in `cat horhosts.txt`
do
echo $host > lunerrors.txt
for path in `cat errorpaths.txt`
do
ssh $host /usr/sbin/esxcfg-mpath -l | grep $path > lunerrors.txt
done
done

Mac address conflicts

So it turns out some VMs have been assigned static MAC addresses already, so my script duplicated some MAC addresses in use. Not a huge deal (the network team bitched about some errors) until the following happened:

The SCCM guys assigned an image package via MAC address to those MAC addresses, and didn't restrict it to XP images. So the SCCM box re-imaged some windows 2003 boxes. Thank goodness we have vRanger in production, so the VMs were restored pretty quickly (save one, which errored out, and Vizioncore gave us a beta version which restored it).

I modified the script to use a range outside the first 256 addresses. Make sure you aren't conflicting if you use it, and make sure your imaging guys don't leave the package wide-open like ours did :).