Add GPFS storage expansion toolkit

infra-run/scripts/bash/gpfs/01_cluster_overview.sh

@@ -0,0 +1,37 @@
+#!/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"
+
+run_optional() {
+  local description="$1"
+  shift
+
+  section "$description"
+  if validate_gpfs_command "$1"; then
+    run_readonly "$@" || warning "$description command failed"
+  fi
+}
+
+section "GPFS / Spectrum Scale Cluster Overview"
+ok "Log file: $LOG_FILE"
+
+run_optional "GPFS daemon state on all nodes" mmgetstate -a
+run_optional "Cluster definition" mmlscluster
+run_optional "Cluster configuration" mmlsconfig
+run_optional "Managers and quorum information" mmlsmgr
+run_optional "NSD inventory" mmlsnsd
+run_optional "Disk inventory for all filesystems" mmlsdisk all
+run_optional "Filesystem definitions" mmlsfs all
+run_optional "Mount state for all filesystems" mmlsmount all
+
+section "Mounted GPFS filesystems from df"
+if command -v df >/dev/null 2>&1; then
+  df -h -t gpfs 2>/dev/null | tee -a "$LOG_FILE" || df -h | awk 'NR == 1 || /gpfs|mmfs/' | tee -a "$LOG_FILE"
+else
+  warning "df command not available"
+fi