How To drop create exadata cell flash cache?

Log onto compute node as user root, in my case test01.com then ssh to testcel1  and perform the following:

​cellcli -e LIST PHYSICALDISK WHERE diskType=flashdisk

#cellcli -e drop flashcache
#cellcli -e drop flashlog
#cellcli -e drop celldisk all flashdisk
#cellcli -e create celldisk all flashdisk
#cellcli -e create flashlog all
#cellcli -e create flashcache all

​cellcli -e LIST PHYSICALDISK WHERE diskType=flashdisk