On Tue, Nov 29, 2005 at 12:17:09PM +0000, Ben Edwards wrote: > Not quite sure what you mean by 'resurve'. While it is true that > there are bits of the filesystem where root only has the access I have > not herd of a standard Linux setup pre-alocatin space apart for swap.
As seen in `man mke2fs`: -m reserved-blocks-percentage Specify the percentage of the filesystem blocks reserved for the super-user. This value defaults to 5%. This would also apply to ext3, as that just ext2 + journal, but I don't know whether other filesystems (reiser, xfs, jfs...) also create a reserve by default. The purpose of this is basically to ensure that user processes are not able to bring the system down by filling up the disk, preventing root-owned daemons from being able to function. -- The freedoms that we enjoy presently are the most important victories of the White Hats over the past several millennia, and it is vitally important that we don't give them up now, only because we are frightened. - Eolake Stobblehouse (http://stobblehouse.com/text/battle.html)
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