Init backup_incus_instances.sh

incus/backup_incus_instances.sh

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+#!/usr/bin/env bash
+# vim: set tabstop=2 softtabstop=2 shiftwidth=2 expandtab:
+#
+# Script Name: backup_incus_instances.sh
+# Description: This script backs up all Incus instances
+#              to a specified backup directory. It is designed 
+#              to be invoked by Borgmatic hooks.
+#
+# Author: Benoit <forgejo@benoit.jp.net>
+# Website: benoit.jp.net
+# License: MIT
+#
+# Dependencies: incus
+# Written with the help of ChatGPT
+#
+
+# Strict mode
+set -euo pipefail
+
+# Set the backup directory
+BACKUP_DIR="/var/backups/incus"
+
+# Create the backup directory if it doesn't exist
+mkdir -p "$BACKUP_DIR"
+
+# Get the list of instances and check for errors
+instances=$(incus ls -f csv -c n 2>/dev/null)
+if [ $? -ne 0 ]; then
+  echo "Error: Failed to list storage instances." >&2
+  exit 1
+fi
+
+# Check if there are any instances to back up
+if [ -z "$instances" ]; then
+  echo "No instances found to back up."
+  exit 0
+fi
+
+# Initialize a success flag
+all_backups_successful=true
+
+# Loop through each instance and back it up
+while IFS=, read -r name; do
+  echo "Backing up instance: $name"
+
+  if incus export "$name" \
+    --compression=none --optimized-storage --instance-only \
+    "$BACKUP_DIR/${name}.tar" &> /dev/null; then
+
+    echo "Successfully backed up: $name"
+  else
+    echo "Error backing up instance: $name" >&2
+    all_backups_successful=false
+  fi
+done <<< "$instances"
+
+# Final message based on backup success
+if $all_backups_successful; then
+  echo "Backup completed successfully. All instances have been backed up to $BACKUP_DIR."
+else
+  echo "Backup completed with errors. Some instances may not have been backed up."
+fi
+