wiping of unused space on ext3

Bryan Kadzban bryan at kadzban.is-a-geek.net
Thu Sep 7 10:58:25 UTC 2006


Mindaugas wrote:
> Hello,
> 
> I was asked if it is possible to zero unused space in ext3 partition?

Easiest way I can think of is:

cat /dev/zero >/fsmountpoint/temp-file

Then, after you get the inevitable error that the disk is full:

rm /fsmountpoint/temp-file

Of course this should probably be done while nobody else is trying to
create or enlarge a file, otherwise they could get errors too...
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