Hi!
> On 9/14/17 00:37, Philipp Guendisch wrote:
> > This patch adds a software based secure erase option to improve data
> > confidentiality. The CONFIG_BLK_DEV_SECURE_ERASE option enables a mount
> > flag called 'sw_secure_erase'. When you mount a volume with this flag,
> > every discard call is
Dear Johannes Thumshirn,
> How can this work with CoW filesystems?
Because we are a layer below filesystems, that depends on the actual
implementation.
If the discards are issued to the right sectors on the drive, we write
into those sectors.
>> Built against torvalds/linux
>
> This should go b
Philipp,
On 9/14/17 21:51, Philipp wrote:
> Dear Damien,
>
> Thank you for your feedback.
>
>> On 14. Sep 2017, at 10:46, Damien Le Moal
>> wrote:
>
> […]
>
>> Writing once to a sector stored on spinning rust will *not* fully
>> erase the previous data. Part of the signal used for storing tha
Dear Damien,
Thank you for your feedback.
> On 14. Sep 2017, at 10:46, Damien Le Moal wrote:
[…]
> Writing once to a sector stored on spinning rust will *not* fully erase
> the previous data. Part of the signal used for storing that data will
> remain on the track (because the disk head is ne
Philipp,
On 9/14/17 00:37, Philipp Guendisch wrote:
> This patch adds a software based secure erase option to improve data
> confidentiality. The CONFIG_BLK_DEV_SECURE_ERASE option enables a mount
> flag called 'sw_secure_erase'. When you mount a volume with this flag,
> every discard call is prep
On Wed, Sep 13, 2017 at 05:37:53PM +0200, Philipp Guendisch wrote:
> This patch adds a software based secure erase option to improve data
> confidentiality. The CONFIG_BLK_DEV_SECURE_ERASE option enables a mount
> flag called 'sw_secure_erase'. When you mount a volume with this flag,
> every discar
This patch adds a software based secure erase option to improve data
confidentiality. The CONFIG_BLK_DEV_SECURE_ERASE option enables a mount
flag called 'sw_secure_erase'. When you mount a volume with this flag,
every discard call is prepended by an explicit write command to overwrite
the data befo
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