move to CSI snapshots

2025-12-23 11:54:42 +11:00
parent ecfd0abc68
commit f570587766
3 changed files with 222 additions and 0 deletions
--- a/openebs-localpb-lvm-retain-cleanup.sh
+++ b/openebs-localpb-lvm-retain-cleanup.sh
@@ -0,0 +1,199 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SC="${SC:-local-nvme-retain}"
+DO_REMOVE="${DO_REMOVE:-0}"     # 0=dry-run, 1=delete
+FORCE="${FORCE:-0}"             # 0=prompt, 1=no prompt (only if DO_REMOVE=1)
+VG_PIN="${VG_PIN:-}"            # optionally pin expected VG (recommended)
+
+AUDIT_DIR="${AUDIT_DIR:-/var/tmp/openebs-localpv-lvm-cleanup}"
+
+usage() {
+  cat <<EOF
+Usage:
+  $0 [--sc <storageclass>] [--remove] [--force] [--vg <vgname>]
+
+Examples:
+  # Dry-run (auto-detect VG from PVs; refuses if multiple VGs)
+  $0
+
+  # Dry-run with pinned VG expectation
+  $0 --vg vg_nvme_local
+
+  # Remove delta with prompt
+  $0 --vg vg_nvme_local --remove
+
+  # Remove delta without prompt
+  $0 --vg vg_nvme_local --remove --force
+
+Env:
+  SC=local-nvme-retain
+  DO_REMOVE=0|1
+  FORCE=0|1
+  VG_PIN=vg_nvme_local
+  AUDIT_DIR=/var/tmp/...
+
+Requires: oc, jq, lvs, lvremove
+EOF
+}
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --sc) SC="$2"; shift 2;;
+    --remove) DO_REMOVE=1; shift;;
+    --force) FORCE=1; shift;;
+    --vg) VG_PIN="$2"; shift 2;;
+    -h|--help) usage; exit 0;;
+    *) echo "Unknown arg: $1" >&2; usage; exit 2;;
+  esac
+done
+
+need() { command -v "$1" >/dev/null 2>&1 || { echo "Missing required command: $1" >&2; exit 1; }; }
+need oc
+need jq
+need lvs
+need lvremove
+
+ts="$(date +%Y%m%d-%H%M%S)"
+run_dir="${AUDIT_DIR}/${ts}"
+mkdir -p "$run_dir"
+
+log() { printf '%s %s\n' "[$(date +%H:%M:%S)]" "$*" | tee -a "$run_dir/run.log" >&2; }
+
+log "Start: SC=${SC} DO_REMOVE=${DO_REMOVE} FORCE=${FORCE} VG_PIN=${VG_PIN:-<none>}"
+log "Audit: ${run_dir}"
+
+# 1) Bound PVCs for SC
+log "Collecting Bound PVCs for storage class '${SC}'"
+oc get pvc -A -o json > "$run_dir/pvcs.json"
+
+jq -r --arg sc "$SC" '
+  .items[]
+  | select(.spec.storageClassName==$sc)
+  | select(.status.phase=="Bound")
+  | [.metadata.namespace, .metadata.name, .spec.volumeName]
+  | @tsv
+' "$run_dir/pvcs.json" > "$run_dir/pvcs.tsv"
+
+pvc_count="$(wc -l < "$run_dir/pvcs.tsv" | awk '{print $1}')"
+if [[ "$pvc_count" -eq 0 ]]; then
+  log "No Bound PVCs found for SC=${SC}. Nothing to do."
+  exit 0
+fi
+log "Bound PVCs found: ${pvc_count}"
+
+cut -f3 "$run_dir/pvcs.tsv" | sort -u > "$run_dir/inuse.pvs"
+pv_count="$(wc -l < "$run_dir/inuse.pvs" | awk '{print $1}')"
+log "Unique PVs referenced: ${pv_count}"
+
+# 2) Fetch PVs
+log "Fetching PV objects"
+: > "$run_dir/pvs.jsonl"
+while read -r pv; do
+  oc get pv "$pv" -o json >> "$run_dir/pvs.jsonl"
+  echo >> "$run_dir/pvs.jsonl"
+done < "$run_dir/inuse.pvs"
+
+# 3) Filter to OpenEBS localpv-lvm PVs and extract (vg, lv)
+log "Extracting (vg, lv) for OpenEBS LocalPV-LVM PVs"
+jq -r '
+  select(.spec.csi.driver=="local.csi.openebs.io")
+  | select(.spec.csi.volumeAttributes["openebs.io/cas-type"]=="localpv-lvm")
+  | [
+      (.spec.csi.volumeAttributes["openebs.io/volgroup"] // ""),
+      (.spec.csi.volumeHandle // "")
+    ]
+  | @tsv
+' "$run_dir/pvs.jsonl" \
+| awk 'NF==2 && $1!="" && $2!="" {print}' \
+| sort -u \
+> "$run_dir/inuse.vg_lv.tsv"
+
+inuse_pairs="$(wc -l < "$run_dir/inuse.vg_lv.tsv" | awk '{print $1}')"
+if [[ "$inuse_pairs" -eq 0 ]]; then
+  log "ERROR: Found no PVs matching OpenEBS localpv-lvm in the PV set for SC=${SC}."
+  log "Either SC doesn't correspond to localpv-lvm, or PVs are encoded differently."
+  exit 1
+fi
+log "Found referenced OpenEBS localpv-lvm volumes: ${inuse_pairs}"
+
+cut -f1 "$run_dir/inuse.vg_lv.tsv" | sort -u > "$run_dir/inuse.vgs"
+vg_count="$(wc -l < "$run_dir/inuse.vgs" | awk '{print $1}')"
+
+if [[ "$vg_count" -ne 1 ]]; then
+  log "ERROR: Referenced PVs span multiple VGs:"
+  cat "$run_dir/inuse.vgs" | tee -a "$run_dir/run.log" >&2
+  log "Refusing to proceed without an explicit --vg to scope deletion."
+  exit 1
+fi
+
+VG="$(cat "$run_dir/inuse.vgs")"
+
+if [[ -n "$VG_PIN" && "$VG_PIN" != "$VG" ]]; then
+  log "ERROR: VG pin mismatch. PVs indicate VG='${VG}', but you pinned '${VG_PIN}'."
+  exit 1
+fi
+
+log "Target VG: ${VG}"
+
+cut -f2 "$run_dir/inuse.vg_lv.tsv" | sort -u > "$run_dir/inuse.lvs"
+inuse_lv_count="$(wc -l < "$run_dir/inuse.lvs" | awk '{print $1}')"
+log "Unique referenced LV names: ${inuse_lv_count}"
+
+# 4) Actual LVs in VG
+log "Listing actual LVs in VG=${VG}"
+lvs --noheadings -o lv_name "$VG" | awk '{$1=$1};1' | sort > "$run_dir/all.lvs"
+all_lv_count="$(wc -l < "$run_dir/all.lvs" | awk '{print $1}')"
+log "Total LVs in VG=${VG}: ${all_lv_count}"
+
+# 5) Delta
+log "Computing delta (LVs in VG not referenced by Bound PVCs/PVs)"
+comm -23 "$run_dir/all.lvs" "$run_dir/inuse.lvs" > "$run_dir/delta.lvs"
+delta_count="$(wc -l < "$run_dir/delta.lvs" | awk '{print $1}')"
+log "Delta candidates: ${delta_count}"
+
+echo
+echo "=== SUMMARY (audit: $run_dir) ==="
+echo "SC=${SC}"
+echo "VG=${VG}"
+echo "Bound PVCs in SC: ${pvc_count}"
+echo "Unique PVs referenced: ${pv_count}"
+echo "Referenced LVs (OpenEBS localpv-lvm): ${inuse_lv_count}"
+echo "Total LVs in VG: ${all_lv_count}"
+echo "Delta candidates: ${delta_count}"
+echo
+
+if [[ "$delta_count" -eq 0 ]]; then
+  log "No delta found. Exiting."
+  exit 0
+fi
+
+echo "Delta list:"
+cat "$run_dir/delta.lvs"
+echo
+
+# 6) Remove if enabled
+if [[ "$DO_REMOVE" -ne 1 ]]; then
+  log "Dry-run only. Re-run with --remove to delete delta LVs."
+  exit 0
+fi
+
+if [[ "$FORCE" -ne 1 ]]; then
+  echo "About to run lvremove on ${delta_count} LVs in VG=${VG}."
+  echo "Type EXACTLY: DELETE to proceed:"
+  read -r confirm
+  if [[ "$confirm" != "DELETE" ]]; then
+    log "Confirmation not received. Aborting."
+    exit 1
+  fi
+fi
+
+log "Removing delta LVs"
+while read -r lv; do
+  [[ -z "$lv" ]] && continue
+  log "lvremove -y /dev/${VG}/${lv}"
+  lvremove -y "/dev/${VG}/${lv}"
+done < "$run_dir/delta.lvs"
+
+log "Completed."
+echo "Done. Audit: $run_dir"