| #!/usr/bin/env bash |
| DISK="/dev/sda3" |
| |
| # Zap the disk to a fresh, usable state (zap-all is important, b/c MBR has to be clean) |
| |
| # You will have to run this step for all disks. |
| sgdisk --zap-all $DISK |
| |
| # Clean hdds with dd |
| dd if=/dev/zero of="$DISK" bs=1M count=100 oflag=direct,dsync |
| |
| # Clean disks such as ssd with blkdiscard instead of dd |
| blkdiscard $DISK |
| |
| # These steps only have to be run once on each node |
| # If rook sets up osds using ceph-volume, teardown leaves some devices mapped that lock the disks. |
| 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--* |
| |
| # Inform the OS of partition table changes |
| partprobe $DISK |