filesystem size after newfs
nafzal at hotmail.com
Mon Aug 10 23:07:06 UTC 2009
I created this small partition of 512K bytes on disk, I am noticing about 24% is used up before system can be mounted and used. My assumption was about 4% is supposed to be used if minfree is set to 0.
#newfs -U -l -m 0 -n -o space /dev/ad1d
/dev/ad1d: 0.5MB (1024 sectors) block size 16384, fragment size 2048 using 1 cylinder groups of 0.50MB, 32 blks, 64 inodes with soft updates
super-block backups (for fsck -b #) at:
#mount /dev/ad1d /test
#df -H /test
Filesystem Size Used Avail Capacity Mounted on
/dev/ad1d 391k 2.0k 389k 1% /test
Could someone explain where the 512-391=121K of disk space went to? What is the relation between this used of space and total paritition size or is it some fixed ratio?
Thanks & Regards
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