Please run the following command, and post the output.
hexdump -C /dev/disks/mpx.vmhba1\:C0\:T0\:L0:3 -n 16636 -s 0x100200 | grep -C 2 '[a-zA-Z0-9]\{4\}-[a-zA-Z0-9]'
Note: You'll have to replace the partition "mpx.vmhba1\:C0\:T0\:L0:3" with yours, i.e. "naa.6d4ae5.....feb4:1"
André