wipe utility

[James R. Van Zandt]

>christoph at linuxsoup.com wrote:
>
>> I am just catching up on some email, but this thread caught my
>> interest. I have [not] looked into the ext3 code or read any of the papers,
>> but I was always under the impression that the filesystem journal only
>> stored a bitmask (table) of modified blocks.  There shouldn't be any
>> data in there.

[I'm even further behind in reading my email...]

ISTR that journaling filesystem can in general journal the data, but
that really hurts performance, so most of them journal only the
metadata.

Jerry Feldman <gaf at blu.org> wrote:
>
>This is a Usenix paper on the subject:
>http://wipe.sourceforge.net/secure_del.html

A fascinating paper.  No discussion of journaling filesystems, though.

	- Jim Van Zandt