s@s:/home$ ls -l
total 306944
drwxr-xr-x. 4 root root 4096 Dec 31 1969 cachet
drwxr-xr-x. 4 root root 4096 Dec 31 1969 cachew
-rwxrwx--- 1 s s 391184 Jan 20 2015 ext4fixup
-rwxrwx--- 1 s s 276976 Jan 20 2015 img2simg
drwxrwx--- 2 s s 4096 Apr 8 21:37 img-tools
-rwxrwx--x 1 s s 477859 Jan 20 2015 make_ext4fs
-rwxrwx--- 1 s s 441952 Jan 20 2015 mkfs.yaffs2.x86
-rwxrwx--- 1 s s 988 Jan 20 2015 mkuserimg.sh
drwxr-xr-x 22 s s 4096 Apr 8 21:37 s
-rwxrwx--- 1 s s 278374 Jan 20 2015 simg2img
-rwxrwx--- 1 s s 5208 Jan 20 2015 simg_dump.py
drwxrwxr-x 4 s s 4096 Apr 8 21:07 T
-rw-rw-r-- 1 s s 59056372 Dec 8 03:45 tcache.img
-rw-r--r-- 1 root root 314572800 Apr 8 21:25 tcache.raw
-rwxrwx--- 1 s s 10179 Jan 20 2015 unyaffs
drwxrwxr-x 3 s s 4096 Apr 8 20:51 W
-rw-rw-r-- 1 s s 70910172 Feb 26 2016 wcache.img
-rw-r--r-- 1 root root 209715200 Apr 8 21:25 wcache.raw
s@s:/home$ sudo make_ext4fs -s -l 512M -a wcache new.img /home/
Creating filesystem with parameters:
Size: 536870912
Block size: 4096
Blocks per group: 32768
Inodes per group: 8192
Inode size: 256
Journal blocks: 2048
Label:
Blocks: 131072
Block groups: 4
Reserved block group size: 31
error: ext4_allocate_best_fit_partial: failed to allocate 446343 blocks, out of space?
s@s:/home$