How to Recreate Exadata Flash cache

On each cell as root do the following 

Steps to create flascache

CellCLI> drop celldisk all flashdisk force

CellCLI> create celldisk all flashdisk

CellCLI> create flashcache all

Example:

CellCLI> drop celldisk all flashdisk force
CellDisk FD_00_xxxxxxxxx successfully dropped
CellDisk FD_01_xxxxxxxxx successfully dropped
CellDisk FD_02_xxxxxxxxx successfully dropped
CellDisk FD_03_xxxxxxxxx successfully dropped
CellDisk FD_04_xxxxxxxxx successfully dropped
CellDisk FD_05_xxxxxxxxx successfully dropped
CellDisk FD_06_xxxxxxxxx successfully dropped
CellDisk FD_07_xxxxxxxxx successfully dropped
CellDisk FD_08_xxxxxxxxx successfully dropped
CellDisk FD_09_xxxxxxxxx successfully dropped
CellDisk FD_10_xxxxxxxxx successfully dropped
CellDisk FD_11_xxxxxxxxx successfully dropped
CellDisk FD_12_xxxxxxxxx successfully dropped
CellDisk FD_13_xxxxxxxxx successfully dropped
CellDisk FD_14_xxxxxxxxx successfully dropped
CellDisk FD_15_xxxxxxxxx successfully dropped

CellCLI>

CellCLI> create celldisk all flashdisk
CellDisk FD_00_xxxxxxxxx successfully created
CellDisk FD_01_xxxxxxxxx successfully created
CellDisk FD_02_xxxxxxxxx successfully created
CellDisk FD_03_xxxxxxxxx successfully created
CellDisk FD_04_xxxxxxxxx successfully created
CellDisk FD_05_xxxxxxxxx successfully created
CellDisk FD_06_xxxxxxxxx successfully created
CellDisk FD_07_xxxxxxxxx successfully created
CellDisk FD_08_xxxxxxxxx successfully created
CellDisk FD_09_xxxxxxxxx successfully created
CellDisk FD_10_xxxxxxxxx successfully created
CellDisk FD_11_xxxxxxxxx successfully created
CellDisk FD_12_xxxxxxxxx successfully created
CellDisk FD_13_xxxxxxxxx successfully created
CellDisk FD_14_xxxxxxxxx successfully created
CellDisk FD_15_xxxxxxxxx successfully created

CellCLI>

CellCLI> create flashcache all
Flash cache xxxxxxxxx_FLASHCACHE successfully created

CellCLI>

CellCLI> exit

quitting