> What is the use case for exposing secure erase in qemu? The whole concept for
> a LBA based secure erase is generally not a very smart idea for flash based
> media..
Hi, Christoph
We got a user requirement: support BLKSECDISCARD in VM. Which is:
ioctl(BLKSECDISCARD) in guest -> qemu backend
On Tue, Nov 16, 2021 at 09:53:39PM -0800, Christoph Hellwig wrote:
> On Tue, Nov 16, 2021 at 10:58:30AM +, Stefan Hajnoczi wrote:
> > Question for Jens and Christoph:
> >
> > Is there a way for userspace to detect whether a Linux block device
> > supports SECDISCARD?
>
> I don't know of one.
On Tue, Nov 16, 2021 at 10:58:30AM +, Stefan Hajnoczi wrote:
> Question for Jens and Christoph:
>
> Is there a way for userspace to detect whether a Linux block device
> supports SECDISCARD?
I don't know of one.
> If not, then maybe a new sysfs attribute can be added:
This looks correct,
On Tue, Nov 16, 2021 at 02:03:15AM +, Qi, Yadong wrote:
> > > Add a new option "secdiscard" for block drive. Parse it and record it
> > > in bs->open_flags as bit(BDRV_O_SECDISCARD).
> > >
> > > Add a new BDRV_REQ_SECDISCARD bit for secure discard request from
> > > virtual device.
> > >
> > >
> > Add a new option "secdiscard" for block drive. Parse it and record it
> > in bs->open_flags as bit(BDRV_O_SECDISCARD).
> >
> > Add a new BDRV_REQ_SECDISCARD bit for secure discard request from
> > virtual device.
> >
> > For host_device backend: implement by ioctl(BLKSECDISCARD) on real
> >
>
> Notably absent: qapi/block-core.json. Without changing this, the option can't
> be
> available in -blockdev, which is the primary option to configure block device
> backends.
>
> This patch seems to contain multiple logical changes that should be split into
> separate patches:
>
> * Adding
On Mon, Nov 15, 2021 at 12:51:59PM +0800, yadong...@intel.com wrote:
> From: Yadong Qi
>
> Add a new option "secdiscard" for block drive. Parse it and
> record it in bs->open_flags as bit(BDRV_O_SECDISCARD).
>
> Add a new BDRV_REQ_SECDISCARD bit for secure discard request
> from virtual device.
Am 15.11.2021 um 05:51 hat yadong...@intel.com geschrieben:
> From: Yadong Qi
>
> Add a new option "secdiscard" for block drive. Parse it and
> record it in bs->open_flags as bit(BDRV_O_SECDISCARD).
>
> Add a new BDRV_REQ_SECDISCARD bit for secure discard request
> from virtual device.
>
> For
