2021-10-18 11:53:38 +00:00
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#!/usr/bin/env bash
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# Inspired from https://rook.io/docs/rook/v1.7/ceph-teardown.html
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if [ $# -ne 1 ]; then
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echo $0 disk
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echo f.i. $0 /dev/sdx
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exit 1
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fi
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DISK="$1"; shift
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# Zap the disk to a fresh, usable state (zap-all is important, b/c MBR has to be clean)
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# You will have to run this step for all disks.
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sgdisk --zap-all $DISK
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# Clean hdds with dd
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2021-10-18 12:29:05 +00:00
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dd if=/dev/zero of="$DISK" bs=1M count=100
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2021-10-18 11:53:38 +00:00
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# Clean disks such as ssd with blkdiscard instead of dd
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blkdiscard $DISK
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# These steps only have to be run once on each node
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# If rook sets up osds using ceph-volume, teardown leaves some devices mapped that lock the disks.
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ls /dev/mapper/ceph-* | xargs -I% -- dmsetup remove %
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# ceph-volume setup can leave ceph-<UUID> directories in /dev and /dev/mapper (unnecessary clutter)
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rm -rf /dev/ceph-*
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rm -rf /dev/mapper/ceph--*
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# Inform the OS of partition table changes
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partprobe $DISK
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