Date: Thu, 22 Aug 2024 13:52:31 +0300 From: Anthony Pankov <anthony.pankov@yahoo.com> To: freebsd-hackers@FreeBSD.org Subject: makefs -t ffs makes too large image Message-ID: <1781435895.20240822135231@yahoo.com>
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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
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