Big bang

07-add-shared-storage.sh

@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+# Wire the shared storage into the cluster (run once on pve1; datacenter config
+# replicates to pve2 automatically):
+#   - lab-nfs : NFS share from the storage VM
+#   - lab-lvm : LVM volume group built on the shared iSCSI LUN
+set -euo pipefail
+source "$(dirname "$0")/lab.env"
+
+has_storage() { lab_ssh "$PVE1_IP" "pvesm status 2>/dev/null | awk '{print \$1}' | grep -qx '$1'"; }
+
+echo "==> Adding NFS storage 'lab-nfs'"
+if has_storage lab-nfs; then
+  echo "    already present"
+else
+  lab_ssh "$PVE1_IP" "pvesm add nfs lab-nfs --server ${STORE_IP} --export /srv/nfs \
+    --content images,iso,vztmpl,backup,rootdir --options vers=4"
+fi
+
+echo "==> Adding iSCSI base storage 'lab-iscsi'"
+if has_storage lab-iscsi; then
+  echo "    already present"
+else
+  echo "    discoverable targets at ${STORE_IP}:"
+  lab_ssh "$PVE1_IP" "pvesm scan iscsi ${STORE_IP}" || true
+  lab_ssh "$PVE1_IP" "pvesm add iscsi lab-iscsi --portal ${STORE_IP} --target ${ISCSI_IQN} --content none"
+fi
+
+echo "==> Locating the iSCSI block device on pve1"
+DEV=""
+for i in $(seq 1 24); do
+  DEV=$(lab_ssh "$PVE1_IP" "for d in /dev/disk/by-path/*iscsi*-lun-1; do [ -e \"\$d\" ] && readlink -f \"\$d\"; done 2>/dev/null | head -1")
+  [[ -n "$DEV" ]] && break
+  # nudge a session login/rescan
+  lab_ssh "$PVE1_IP" "iscsiadm -m node -l 2>/dev/null; iscsiadm -m session -R 2>/dev/null" || true
+  sleep 5
+done
+[[ -n "$DEV" ]] || { echo "ERROR: iSCSI LUN device did not appear on pve1"; exit 1; }
+echo "    LUN device: $DEV"
+
+echo "==> Creating shared LVM volume group 'pve_shared' on the LUN (pve1)"
+if lab_ssh "$PVE1_IP" "vgs --noheadings -o vg_name 2>/dev/null | grep -qw pve_shared"; then
+  echo "    VG pve_shared already exists"
+else
+  lab_ssh "$PVE1_IP" "pvcreate -ff -y ${DEV} && vgcreate pve_shared ${DEV}"
+fi
+
+echo "==> Adding shared LVM storage 'lab-lvm'"
+if has_storage lab-lvm; then
+  echo "    already present"
+else
+  lab_ssh "$PVE1_IP" "pvesm add lvm lab-lvm --vgname pve_shared --shared 1 --content images,rootdir"
+fi
+
+# make sure pve2 also sees the new VG on the shared LUN
+lab_ssh "$PVE2_IP" "iscsiadm -m session -R 2>/dev/null; pvscan --cache 2>/dev/null; vgscan 2>/dev/null" || true
+
+echo "==> Storage status on pve1"
+lab_ssh "$PVE1_IP" "pvesm status"
+echo
+echo "Shared storage configured. Next: ./verify.sh"