DISK="/dev/sdX"
# Zap the disk to a fresh, usable state (zap-all is important, b/c MBR has to be clean)
sgdisk --zap-all $DISK
# Wipe a large portion of the beginning of the disk to remove more LVM metadata that may be present
dd if=/dev/zero of="$DISK" bs=1M count=100 oflag=direct,dsync
# SSDs may be better cleaned with blkdiscard instead of dd
blkdiscard $DISK
# Inform the OS of partition table changes
partprobe $DISK
# This command hangs on some systems: with caution, 'dmsetup remove_all --force' can be used
ls /dev/mapper/ceph-* | xargs -I% -- dmsetup remove %
# ceph-volume setup can leave ceph-<UUID> directories in /dev and /dev/mapper (unnecessary clutter)
rm -rf /dev/ceph-*
rm -rf /dev/mapper/ceph--*
```\
### 参考链接
https://rook.github.io/docs/rook/v1.8/ceph-teardown.html#delete-the-data-on-hosts
