noob question on disk sizes and inode density

Chad Leigh -- Shire.Net LLC chad at
Tue Jun 28 07:26:14 GMT 2005


I have an md(4) file system that I changed the block size and inode  
density on.  The file was about 1.3GB in size originally and when  
using newfs with standard parameters shows about 1.3GB in size.  My  
new parameters to newfs  ( -f 512 -b 4096 -i 1024 -U -O 2) are meant  
to allow a lot of small files (basically lots of files around  
170bytes long).  (holding mail "tuples" for a sort of grey listing)

However, df (df -h or df -m etc) shows 1.0Gb instead of 1.3Gb for the  
file system size.  Is the "missing" ~ 300mb the extra space needed to  
store the actual extra inodes themselves or is it an artifact of  
changing the parameters so that df gets confused?


Chad Leigh -- Shire.Net LLC
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chad at

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