Hi,
I was just thinking about reformating /home/user/MyDocs/ partition to ext* because of the tile's size (also because of directory linking, permissions...).
On n900 I have 9.4G of OSM tiles (du -h)
the same on my PC with ext3 takes 1.4G
and apparent size on PC is 1.1G
And my PC has 4096 block size. Interesting.
I did all in the first post on my PC (with 1024 blocks) and the first thing I see is that the empty 4G file reports 3G free space after mount (on PC).
After tile-files copy - du says 1.2G and apparent size is 1.1G.
So - (before copying this 4G file to n900), the main problem is the size 3 out of 4G. This I dont understand. It looks like one block takes 256bytes?
EDIT: 4096 block says 3.8G free.... man page says inode takes 256bytes, you can change with I=128...testing it
EDIT2: test of different block sizes, all with -I 128 inodes:
4096 block : avail 3.9G; size 1.4G apparent 1.1G (0.1G;+~30% waste; tot=~38%)
2048 block : avail 3.7G; size 1.2G apparent 1.1G (9%;+ 16% waste; tot=23.6%)
1024 block : avail 3.5G; size 1.2G apparent 1.1G (15%; +10% waste; tot=23.5%)
For me, the 1024 or 2048 blocks are the same and I simply prefer 2048.
After copy to n900 it seems to work.