cd /etc/monica

/usr/bin/docker compose exec -T db mysqldump -u monica -pmonica monica |
    /usr/bin/gzip --rsyncable |
    /usr/local/bin/restic backup --stdin --stdin-filename monica-mariadb.sql.gz

# Snapshot data directory
data_dir='/mnt/data1/monica/monica'
snapshot_dir="${data_dir}.snapshot"

# Read-only snapshot for atomic backup
btrfs subvolume snapshot -r "$data_dir" "$snapshot_dir" || exit $?

/usr/local/bin/restic backup "$snapshot_dir"

# Always remove snapshot subvolume, even if restic fails
btrfs subvolume delete "$snapshot_dir"