Jeff Garzik writes:
> Albert D. Cahalan wrote:
>> Forget the shred program. It's less useful than having the
>> filesystem simply zero the blocks, because it's slow and you
>> can't be sure to hit the OS-visible blocks.
>
> Why not?
>
> Please name a filesystem that moves allocated blocks around on you. And
> point to code, too.
Reiserfs tails
fs/reiserfs
ext3 with data journalling
fs/ext3
the journalling flash filesystems
fs/jffs
fs/jffs2
NTFS with compression
fs/ntfs
Some of these are listed in the shred man page.
Multiple overwrites won't protect you from the disk manufacturer
or the NSA. Only one is needed to protect against root & kernel.
So it makes sense to have the filesystem zero the blocks when
they are freed from a file.
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This archive was generated by hypermail 2b29 : Sat Nov 23 2002 - 22:00:39 EST