On 06/02/2014 03:16 PM Andrew McGlashan wrote:
Thank you Darac for your input. Here's an update on what I'm doing now. I caused the RAID1 mirrors to complete the sync in a dropbear boot environment. Now I'm writing /dev/zero to the crypt mounted volumes. No changes yet to the form of the command, but if I see troubles, then I'll consider dropping block size and use cat as you suggest. There is a long way to go before the /dev/zero writing will be done, I'm going to get some sleep soon and check it later. Kind Regards AndrewM
Are you aware of FOSS 'wipe'?
http://wipe.sf.net/
Other file wiping utilities
There are several other file wipers available.
Another "wipe" by Berke Durak <durakb@crit2.univ-montp2.fr>
Colin Plumb’s <colin@nyx.net> sterilize.
Todd Burgess’s <tburgess@eddie.cis.uoguelph.ca> srm is
available on
sunsite/metalab in
ftp://metalab.unc.edu/pub/Linux/system/filesystems/