My working partman config for debian installer

parted-preseed.cfg

# Set up LVM on the first/only disk.
d-i partman-auto/method string lvm
d-i partman-auto/choose_recipe select boot-root
d-i partman-lvm/device_remove_lvm boolean true
d-i partman-md/device_remove_md boolean true

# Set the name of the created volume group.
d-i partman-auto-lvm/new_vg_name string vg00

# being thrown into partman's guided size dialog.
d-i partman-auto-lvm/guided_size string max

#d-i partman-auto-lvm/new_vg_name string vg00
d-i partman-auto/expert_recipe string                         \
      boot-root ::                                            \
              100 200 200 ext3                                \
                      $primary{ } $bootable{ }                \
                      method{ format } format{ }              \
                      use_filesystem{ } filesystem{ ext3 }    \
                      mountpoint{ /boot }                     \
              .                                               \
              500 10000 1000000000 ext4                       \
                      $lvmok{ }                               \
                      method{ format } format{ }              \
                      use_filesystem{ } filesystem{ ext4 }    \
                      mountpoint{ / }                         \
              .                                               \
              1024 2048 50% linux-swap                        \
                      $lvmok{ }                               \
                      method{ swap } format{ }                \
              .

# Make ext4 the default filesystem
d-i partman/default_filesystem string ext4

# This makes partman automatically partition without confirmation, provided
# that you told it what to do using one of the methods above.
d-i partman-lvm/confirm_nooverwrite boolean true
d-i partman-lvm/confirm boolean true
d-i partman-partitioning/confirm_write_new_label boolean true
d-i partman/choose_partition select Finish
d-i partman/confirm_nooverwrite boolean true
d-i partman/confirm boolean true