Re: [virtio-dev] [PATCH v3] Add lifetime metrics to virtio-blk

[Enrico Granata <egranata@google.com>]

TC leads, please schedule a vote on resolving this issue

Fixes: https://github.com/oasis-tcs/virtio-spec/issues/97

Thanks,
- Enrico

On Mon, Mar 1, 2021 at 11:21 AM Stefan Hajnoczi <stefanha@redhat.com> wrote:
>
> On Mon, Mar 01, 2021 at 10:51:03AM -0700, Enrico Granata wrote:
> > In many embedded systems, virtio-blk implementations are
> > backed by eMMC or UFS storage devices, which are subject to
> > predictable and measurable wear over time due to repeated write
> > cycles.
> >
> > For such systems, it can be important to be able to track
> > accurately the amount of wear imposed on the storage over
> > time and surface it to applications. In a native deployments
> > this is generally handled by the physical block device driver
> > but no such provision is made in virtio-blk to expose these
> > metrics for devices where it makes sense to do so.
> >
> > This patch adds support to virtio-blk for lifetime and wear
> > metrics to be exposed to the guest when a deployment of
> > virtio-blk is done over compatible eMMC or UFS storage.
> >
> > Signed-off-by: Enrico Granata <egranata@google.com>
> > ---
> >  content.tex | 31 +++++++++++++++++++++++++++++--
> >  1 file changed, 29 insertions(+), 2 deletions(-)
>
> Great, please request a Technical Committee vote:
> https://github.com/oasis-tcs/virtio-spec/#use-of-github-issues
>
> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>