> We have 200 MB
> After the fdasd command we have made an ext3 file system with :
> mke2fs -j /dev/dasd/0104/part1 -b 4096
>
> When we mount this file system we have only 167MB free :

In addition to filesystem overhead + journal, there is also a portion of
blocks reserved for root after all non-reserved blocks are used... the
idea being that with some extra blocks in the filesystem's back pocket,
root would have elbow room to fix what needed to be fixed after all the
non-reserved blocks were in use.

Man tune2fs, specifically -m option for this.  I've always seen a
default of 5%.

~ Daniel








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