False start

devices/teal/config/usr/local/bin/appdata-backup-cleanup.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+if [ -f /run/appdata_active_snapshot.txt ]; then
+    SNAPSHOT_NAME=$(cat /run/appdata_active_snapshot.txt)
+    
+    # Unmount and clean up scratch directory
+    umount -R /mnt/appdata-scratch || true
+    rmdir /mnt/appdata-scratch || true
+    
+    # Destroy the recursive snapshot tree across all appdata datasets
+    zfs destroy -r tank/appdata@"$SNAPSHOT_NAME"
+    
+    rm -f /run/appdata_active_snapshot.txt
+fi

devices/teal/config/usr/local/bin/appdata-backup-prep.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+set -e
+
+SNAPSHOT_NAME="restic-auto-$(date +%Y%m%d_%H%M%S)"
+echo "$SNAPSHOT_NAME" > /run/appdata_active_snapshot.txt
+
+# 1. Take a recursive snapshot from the top-level tank/appdata parent
+zfs snapshot -r tank/appdata@"$SNAPSHOT_NAME"
+
+# 2. Mount the parent snapshot to a temporary scratch directory
+mkdir -p /mnt/appdata-scratch
+mount -t zfs tank/appdata@"$SNAPSHOT_NAME" /mnt/appdata-scratch