Try
iostat -x | grep VxVM |
The output of this shows VxVMnnnnn where nnnnn corresponds to the minor device number of the block device.
Using nnnnn with a find command will tells us the block device…
find /dev/vx/dsk -type b -exec ls {} \; | awk '{print " ",$6,$10}'" | grep " nnnnn " |
Display in megabytes per second only active devices and retain the header with…
iostat -mxz 1 | egrep "Device:|VxVM" |