diff --git a/ideas.txt b/ideas.txt
new file mode 100644
index 0000000..06a78f5
--- /dev/null
+++ b/ideas.txt
@@ -0,0 +1 @@
+specify UID when creating user
\ No newline at end of file
diff --git a/init-server.py b/init-server.py
index 366abf1..76894cf 100755
--- a/init-server.py
+++ b/init-server.py
@@ -9,11 +9,16 @@ from ssh_lib.kernel import set_cpu_governor, setup_kernel_settings
 from ssh_lib.nginx import certbot, nginx
 from ssh_lib.pkg_base import pkg_base, pkg_clean, pkg_upgrade
 from ssh_lib.planetiler import TILE_GEN_BIN, install_planetiler
-from ssh_lib.utils import add_user, put, setup_time, sudo_cmd
+from ssh_lib.utils import add_user, enable_sudo, put, setup_time, sudo_cmd
 
 
 def prepare_shared(c):
-    add_user(c, 'ofm')
+    add_user(
+        c,
+        'ofm',
+        passwd='x',
+    )
+    enable_sudo(c, 'ofm')
 
     pkg_upgrade(c)
     pkg_clean(c)
@@ -25,13 +30,14 @@ def prepare_shared(c):
 
 
 def prepare_tile_gen(c):
-    install_planetiler(c)
+    # install_planetiler(c)
 
     for file in [
         'prepare-virtualenv.sh',
         'planetiler_planet.sh',
         'planetiler_monaco.sh',
         'gen_monaco.sh',
+        'extract.sh',
     ]:
         put(
             c,
@@ -41,7 +47,7 @@ def prepare_tile_gen(c):
             owner='ofm',
         )
 
-    sudo_cmd(c, f'cd {TILE_GEN_BIN} && source prepare-virtualenv.sh', user='ofm')
+    # sudo_cmd(c, f'cd {TILE_GEN_BIN} && source prepare-virtualenv.sh', user='ofm')
 
 
 def prepare_http_host(c):
diff --git a/scripts/tile_gen/extract.sh b/scripts/tile_gen/extract.sh
new file mode 100644
index 0000000..e5f3664
--- /dev/null
+++ b/scripts/tile_gen/extract.sh
@@ -0,0 +1,63 @@
+#!/usr/bin/env bash
+
+# reference:
+# https://www.kernel.org/doc/Documentation/filesystems/ext4.txt
+# https://wiki.archlinux.org/title/ext4
+#
+# -m reserved-blocks-percentage
+# -F Force mke2fs to create a filesystem, even if the specified device is not a partition on a block special device
+#
+# -O feature
+# from  /etc/mke2fs.conf
+# defaults: has_journal,extent,huge_file,flex_bg,metadata_csum,64bit,dir_nlink,extra_isize
+# disabling journalling, since it's a read-only fs, as well as other unused features
+#
+# -E extended-options
+# lazy_itable_init - inode table is fully initialized at the time of file system creation
+# nodiscard - Do not attempt to discard blocks at mkfs time.
+#
+# -T news or small
+
+
+sudo umount mnt || true
+rm -rf mnt
+rm -f image.ext4
+
+
+# make a sparse file
+# make sure it's bigger then the current OSM output
+# less fragmentation with fallocate
+fallocate -l 150G image.ext4
+#truncate -s 150G image.ext4
+
+
+mke2fs -t ext4 -v \
+  -m 0 \
+  -F \
+  -O ^has_journal,^extent,^huge_file,^metadata_csum,^64bit,^extra_isize \
+  -E lazy_itable_init=0,nodiscard \
+  -T small \
+  image.ext4
+
+mkdir mnt
+sudo mount -v \
+  -t ext4 \
+  image.ext4 mnt
+
+
+sudo /data/ofm/tile_gen/venv/bin/mb-util output.mbtiles mnt/extract
+sudo umount mnt
+
+resize2fs -M image.ext4
+e2fsck -vf image.ext4
+filefrag -e image.ext4
+
+tune2fs -E mount_opts=ro image.ext4
+
+# -o barriers=[0|1]
+# -o data=writeback
+
+# set mount option
+#tune2fs -E mount_opts=ro
+
+
diff --git a/scripts/tile_gen/gen_monaco.sh b/scripts/tile_gen/gen_monaco.sh
index abdac0d..690b439 100644
--- a/scripts/tile_gen/gen_monaco.sh
+++ b/scripts/tile_gen/gen_monaco.sh
@@ -7,5 +7,5 @@ RUN_FOLDER="/data/ofm/runs/monaco_$DATE"
 mkdir -p "$RUN_FOLDER"
 cd "$RUN_FOLDER" || exit
 
-bash /data/tile_gen/run_monaco.sh "$DATE"
+bash /data/ofm/tile_gen/planetiler_monaco.sh "$DATE"