makefs -t ffs makes too large image

Hello,

There is no much info about makefs so I ask here.

I've tried to make UFS image via `makefs` of a directory sized 500Mb and get file of 1200Mb.
Is it a bug or feature? Is it related to source files that lies on  ZFS while making UFS image?

#makefs -t ffs -B little -o label=rootfs -o version=2 -o softupdates=0 image/rootfs.ufs installed

Calculated size of `image/rootfs.ufs': 1264320512 bytes, 14974 inodes
Extent size set to 32768
image/rootfs.ufs: 1205.8MB (2469376 sectors) block size 32768, fragment size 4096
        using 2 cylinder groups of 866.31MB, 27722 blks, 11136 inodes

#du -hcd 1 installed/

512B    installed/media
512B    installed/tmp
512B    installed/mnt
2,4M    installed/sbin
259K    installed/var
512B    installed/dev
 99K    installed/libexec
835K    installed/bin
384M    installed/usr
9,7M    installed/rescue
676K    installed/etc
512B    installed/net
5,0K    installed/root
512B    installed/proc
9,4M    installed/lib
 90M    installed/boot
497M    installed/
497M    total

# tunefs -p image/rootfs.ufs
...
tunefs: maximum blocks per file in a cylinder group: (-e)  8192
tunefs: average file size: (-f)                            16384
tunefs: average number of files in a directory: (-s)       64
tunefs: minimum percentage of free space: (-m)             8%
tunefs: space to hold for metadata blocks: (-k)            0
tunefs: optimization preference: (-o)                      time
tunefs: volume label: (-L)                                 rootfs


P.S. FreeBSD version 14-STABLE

-- 
Best regards,
 Anthony  Pankoff                        mailto:anthony.pankov@yahoo.com