mke2fs options for very large filesystems

[Maurice Volaski]

>Yes, if you are creating larger files.  By default e2fsck assumes the average
>file size is 8kB and allocates a corresponding number of inodes there.  If,
>for example, you are storing lots of larger files there (digital photos, MP3s,
>etc) that are in the MB range you can use "-t largefile" or "-t largefile4"
>to specify an average file size of 1MB or 4MB respectively.  You can also
>use -i or -N (see man page) to override the default bytes-per-inode value.

Wouldn't -T largefile already be making choices about the default 
bytes-per-inode?

How could I make my own determination about what values are most 
appropriate for -i and -N? My filesystems are generally several 
hundreds of gigabytes, filled with files that average about one 
megabyte in size.
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Maurice Volaski, mvolaski at aecom.yu.edu
Computing Support, Rose F. Kennedy Center
Albert Einstein College of Medicine of Yeshiva University