To reformat NVMe devices manually

1. Take the disk offline.

   # vxdisk offline r720xd-114217_intel_nvme0_0

2. Remove the device from VxVM.

   # vxdisk rm r720xd-114217_intel_nvme0_0

3. Removing the NVMe device from the operating system.

   # echo 1 > /sys/block/nvme0n1/device/device/remove

4. Refresh the VxVM device tree.

   # vxdisk scandisks

5. Verify that device is not present.

   # vxdisk list | grep nvme

6. Rescan the NVMe PCI device to add it to the operating system device tree.

   # echo 1 > /sys/bus/pci/rescan 
   # echo 1 > /sys/bus/pci/drivers/nvme/0000\:05\:00.0/rescan 

7. Format the NVMe device to the required sector size using the Intel® SSD Data Center Tool (ISDCT).

   # isdct start -intelssd 0 -nvmeformat LBAFormat=3 SecureEraseSetting=0 \
   ProtectionInformation=0 MetadataSettings=0
   WARNING! You have selected to format the drive! 
   Proceed with the format? (Y|N): y
   Formatting...
   
   - Intel SSD DC P3700 Series CVFT5456000V2P0EGN -
   
   Status : NVMeFormat successful.

8. Refresh the VxVM device tree.

   # vxdisk scandisks

9. Verify the device.

   # vxdisk list | grep nvme
   r720xd-114217_intel_nvme0_0 auto:none  -   - online invalid