On Sun, Aug 25, 2013 at 9:39 AM, Ralf ranfyy <ranfyy@xxxxxxxxx> wrote: >> I do remember reading that shredding on a journaling FS is not that >> very efficient (I never understood why, though), > > > You can read up a bit on how revoering works on ext4 here: > http://openfacts2.berlios.de/wikien/index.php/BerliosProject:Ext4magic > Thanks. I also checked the man shred page, and it says: "In the case of ext3 file systems, the above disclaimer applies (and shred is thus of limited effectiveness) only in data=journal mode, which journals file data in addition to just metadata. In both the data=ordered (default) and data=writeback modes, shred works as usual." So this would mean that shredding should work on ext3, too, under certain configurations. I'm just wondering how to check whether my ext3 partition is using defaults or some other 'data=' option? The following is not very informative: liv@malou-laptop:~$ cat /etc/mtab | grep -i ext3 /dev/sda6 / ext3 rw,errors=remount-ro 0 0 /dev/sda8 /home ext3 rw,errors=remount-ro 0 0 Regards, Liviu -- Users can unsubscribe from the list by sending email to emelfm2-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field or by logging into the web interface.