d-i     partman-auto/expert_recipe string        \
           boot-root ::                          \
             256 30 512 raid                     \
                $lvmignore{ }                    \
                $primary{ } method{ raid }       \
             .                                   \
             8096 35 -1 raid                     \
                $lvmignore{ }                    \
                $primary{ } method{ raid }       \
             .                                   \
             8096 8096 8096 ext4                 \
                $defaultignore{ }                \
                $lvmok{ }                        \
                lv_name{ root }                  \
                method{ format }                 \
                format{ }                        \
                use_filesystem{ }                \
                filesystem{ ext4 }               \
                mountpoint{ / }                  \
             .                                   \
             1024 55 -1 ext4                     \
                $defaultignore{ }                \
                $lvmok{ }                        \
                lv_name{ backup }                \
                method{ format }                 \
                format{ }                        \
                use_filesystem{ }                \
                filesystem{ ext4 }               \
                mountpoint{ /backup }            \
             .                                   \
             2048 2048 2048 swap                 \
                $defaultignore{ }                \
                $lvmok{ }                        \
                lv_name{ swap }                  \
                method{ swap }                   \
                format{ }                        \
            .