From 32bab13c7b247198e22fa9839fda1a4c26ea438b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gardais=20J=C3=A9r=C3=A9my?=
 <jeremy.gardais@univ-rennes1.fr>
Date: Wed, 3 Jul 2019 10:05:56 +0200
Subject: [PATCH] Add a script to generate command to remove lvm-osd

---
 ceph/remove.lvm-osd | 77 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100755 ceph/remove.lvm-osd

diff --git a/ceph/remove.lvm-osd b/ceph/remove.lvm-osd
new file mode 100755
index 0000000..c8cabaa
--- /dev/null
+++ b/ceph/remove.lvm-osd
@@ -0,0 +1,77 @@
+#!/bin/sh
+
+# This script intend to generate another temp script with the differents
+# commands to remove a Ceph-OSD previously generated with `ceph-volume lvm`
+
+# Give the OSD number to remove as first argument
+OSD_ID_TO_REMOVE="${1}"
+
+## Colors definition {{{
+BLACK='\033[49;30m'
+BLACKB='\033[49;90m'
+RED='\033[0;31m'
+REDB='\033[1;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[0;33m'
+BLUE='\033[94;49m'
+MAGENTA='\033[0;35m'
+CYAN='\033[36;49m'
+WHITE='\033[0;37m'
+BOLD='\033[1m'
+RESET='\033[0m'
+## }}}
+
+# Test the first argument
+if [ -z "${OSD_ID_TO_REMOVE}" ]; then
+	printf '%b\n' "${REDB}You should give the OSD_ID to remove as first argument.${RESET}"
+	exit 1
+fi
+
+# Path of the temp generated script
+temp_script="/tmp/lvm-osd.to.remove.sh"
+
+# Get all informations
+osd_path="/var/lib/ceph/osd/ceph-${OSD_ID_TO_REMOVE}"
+lv_path=$(file /var/lib/ceph/osd/ceph-"${OSD_ID_TO_REMOVE}"/block | cut -d" " -f5)
+vg_name=$(lvs --noheadings -o vg_name "${lv_path}" | tr -d '  ')
+pv_path=$(lvs --noheadings -o devices "${lv_path}" | sed 's;.*\(/dev/...\).*;\1;')
+
+# Tests {{{
+# }}}
+
+printf '%b\n' "OSD path to umount then to remove : ${REDB}${osd_path}${RESET}"
+printf '%b\n' "OSD_ID to remove : ${REDB}${OSD_ID_TO_REMOVE}${RESET}"
+if [ ! -L "${lv_path}" ]; then
+	printf '%b\n' "The logical volume doesn't seems to exists."
+	printf '%b\n' "${REDB}It might be better to manually purge the OSD.${RESET}"
+else
+	printf '%b\n' "Logical Volume to remove : ${REDB}${lv_path}${RESET}"
+fi
+printf '%b\n' "Volume Group to remove : ${REDB}${vg_name}${RESET}"
+printf '%b\n' "Physical volume to remove : ${REDB}${pv_path}${RESET}"
+
+# Generate a temp script with the expected commands
+rm -rf -- "${temp_script}"
+touch -- "${temp_script}"
+
+printf '%b\n' "#!/bin/sh" >> "${temp_script}"
+
+## Umount the OSD
+printf '%b\n' "umount ${osd_path}" >> "${temp_script}"
+
+## Remove mount path
+printf '%b\n' "rmdir -- ${osd_path}" >> "${temp_script}"
+
+## Remove the LV
+printf '%b\n' "lvremove ${lv_path}" >> "${temp_script}"
+
+## Remove the VG
+printf '%b\n' "vgremove ${vg_name}" >> "${temp_script}"
+
+## Remove the PV
+printf '%b\n' "pvremove ${pv_path}" >> "${temp_script}"
+
+
+printf '%b\n' "A temp script with expected commands is available to : ${GREEN}${temp_script}${RESET}"
+
+exit 0