2015-12-21 13:39 GMT+03:00 Michal Privoznik :
> I'm no expert but I think fstrim is no help here - it merely reclaims
> free space on a disk, but raw data is still accessible. At least can be
> if disk does not implement DRAT (Deterministic Read After Trim) (read of
> zeroes
2015-12-21 10:18 GMT+03:00 Michal Privoznik :
> None that I know of. It's just that I've came across some discussion in
> the office about volWipe and it just appeared to me that we ought to
> have this documented.
May be in this case doing FITRIM ioctl ? As i understand
On 21.12.2015 11:20, Vasiliy Tolstov wrote:
> 2015-12-21 10:18 GMT+03:00 Michal Privoznik :
>> None that I know of. It's just that I've came across some discussion in
>> the office about volWipe and it just appeared to me that we ought to
>> have this documented.
>
>
> May
On 18.12.2015 20:30, John Ferlan wrote:
>
>
> On 12/17/2015 05:10 AM, Michal Privoznik wrote:
>> So you have a libvirt volume that you want to wipe out. But lets
>> say that the volume is actually a file stored on a journaled
>> filesystem. Overwriting it with zeroes or a pattern does not mean
On 12/17/2015 05:10 AM, Michal Privoznik wrote:
> So you have a libvirt volume that you want to wipe out. But lets
> say that the volume is actually a file stored on a journaled
> filesystem. Overwriting it with zeroes or a pattern does not mean
> that corresponding physical location on the disk
So you have a libvirt volume that you want to wipe out. But lets
say that the volume is actually a file stored on a journaled
filesystem. Overwriting it with zeroes or a pattern does not mean
that corresponding physical location on the disk is overwritten
too, due to journaling. It's the same