[dm-crypt] Is erasing hard disk drive mandatory?
htd at fancy-poultry.org
Fri May 30 19:10:53 CEST 2014
On 30.05.2014, Thomas Bastiani wrote:
> On SSD's though, this would prevent TRIM from functioning properly
> and make the SSD appear as full to the controller which would
> hurt performance.
If you e.g. do a "dd if=/dev/urandom of=bigfile" to a SSD drive
until the partition is fully overwritten, simply deleting "bigfile"
followed by a "fstrim" should restore performance to the same level as
is was before. What am I missing?
More information about the dm-crypt