Add GPFS storage expansion toolkit

2026-05-05 21:40:46 +00:00
parent c42d8bfb8f
commit 5dd8c34952
11 changed files with 925 additions and 0 deletions
@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+set -o errexit
+set -o nounset
+set -o pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+# shellcheck source=00_env.sh
+. "$SCRIPT_DIR/00_env.sh"
+
+BACKGROUND=false
+
+usage() {
+  printf 'Usage: %s --fs <filesystem> [--execute] [--background]\n' "$(basename "$0")"
+}
+
+while [[ "$#" -gt 0 ]]; do
+  case "$1" in
+    --fs) FILESYSTEM="${2:-}"; shift 2 ;;
+    --execute) DRY_RUN=false; shift ;;
+    --background) BACKGROUND=true; shift ;;
+    -h|--help) usage; exit 0 ;;
+    *) critical "Unknown argument: $1"; usage; exit 2 ;;
+  esac
+done
+
+if [[ -z "$FILESYSTEM" ]]; then
+  critical "Missing required --fs <filesystem>"
+  usage
+  exit 2
+fi
+
+for cmd in mmlsdisk mmrestripefs; do
+  require_cmd "$cmd" || exit 2
+done
+
+warning "Restripe/rebalance can be I/O intensive. Run only in an approved change window."
+
+section "Current disk balance"
+mmlsdisk "$FILESYSTEM" 2>&1 | tee -a "$LOG_FILE" || warning "Unable to show current disk state"
+
+section "Planned rebalance"
+if [[ "$BACKGROUND" == "true" ]]; then
+  if [[ "$DRY_RUN" == "true" ]]; then
+    ok "DRY-RUN: mmrestripefs $FILESYSTEM -b &"
+  else
+    confirm_execute "background restripe for $FILESYSTEM"
+    ok "RUN: mmrestripefs $FILESYSTEM -b &"
+    mmrestripefs "$FILESYSTEM" -b 2>&1 | tee -a "$LOG_FILE" &
+  fi
+else
+  ok "DRY-RUN: mmrestripefs $FILESYSTEM -b"
+  confirm_execute "restripe for $FILESYSTEM"
+  if [[ "$DRY_RUN" == "false" ]]; then
+    run_cmd mmrestripefs "$FILESYSTEM" -b
+  fi
+fi