wiping of unused space on ext3
Wolber, Richard C
richard.c.wolber at boeing.com
Thu Sep 7 14:53:07 UTC 2006
> From: Mindaugas [mailto:mind at bi.lt]
> Sent: Thursday, September 07, 2006 12:26 AM
> To: ext3-users at redhat.com
> Cc: CentOS mailing list
> Subject: wiping of unused space on ext3
>
>
> Hello,
>
> I was asked if it is possible to zero unused space in ext3
> partition?
>
> Users write to the server via Samba and are far from
> computer geeks so teaching them to use some safedelete
> utility is quite impossible.
>
> Is there some way or utility to wipe out all the data from
> unused space?
I believe you can use the "chattr -s" command to mark all of the files
so that
when they are deleted, their blocks are wiped with zeros. I believe that
you'd
need to set up some sort of cron job to make sure all of the files have
this
attribute set on a regular basis, unless this works as a directory level
attribute.
..Chuck..
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