How to renumber vmhba's

A typical ESX install will see:
Vmhba0 = Local SCSI Controller
Vmhba1 = HBA #1
Vmhba2 = HBA#2

I noticed after a recent run of deployments with 2.5.4 that vmhba0 and 1 were fibre channel and 2 was local SCSI, completing screwing up some of my magnificent recovery scripts.

To manipulate which controller maps to which vmhba#, you need to manipulate /etc/vmware/hwconfig and /etc/vmware/devnames.conf

In /etc/vmware/hwconfig make your changes in (e.g. below):

Devicenames.003:02.0.scsi = “vmhba2”  “vmhba0”
Devicenames.006:01.0.fc = “vmhba0”  “vmhba1”
Devicenames.006:01.1.fc = “vmhba1”  “vmhba2”

I also remove everything in the multipath section:

Multipath.vmhba0:0:58.diable = “” (update all your vmhba0  vmhba1)

In /etc/vmware/devname.conf make the obvious changes.

Reboot. Check hwconfig. If the multipathing hasn’t updated to the new names, delete and reboot. That should do the trick.

- Jason Langone

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