Missing disk device name; VMDK mapping unavailable for "/mnt/firmware/mnt/boot-firmware" (4240601)

After upgrading SSB (running on a virtual machine) from 6.0.0 to 6.0.1. the following errors are reported in the logs.

 vmsvc[2232]: [ warning] [guestinfo] GuestInfoGetDiskDevice: Missing disk device name; VMDK mapping unavailable for "/mnt/firmware/mnt/boot-firmware", fsName: "/dev/sda2"
vmsvc[2232]: [ warning] [guestinfo] GuestInfoGetDiskDevice: Missing disk device name; VMDK mapping unavailable for "/mnt/firmware/mnt/drbd/private", fsName: "/dev/sda4"

1. Shutdown the guest VM
2. Edit the VM settings as follows

Switch the "LSI Logic Parallel" controller at "SCSI controller 0" to "VMware Paravirtual"

3. Restart the VM