# Re: \[virtio-dev\] Fwd: \[PATCH v2\] Provide detailed specification of virtio-blk lifetime metrics

- From: Stefan Hajnoczi \<stefanha@redhat.com\>
- Date: 2021-07-14 14:25:10 
- List: virtualization
- Page: https://ratatoskr.run/virtualization/2021/07/6403906
- Thread: https://ratatoskr.run/linux-block/2021/07/6403906/t.md

```text
On Wed, Jul 14, 2021 at 11:36:58AM +0200, Cornelia Huck wrote:
> On Wed, Jul 14 2021, Stefan Hajnoczi [ref] wrote:
> 
> > On Wed, May 05, 2021 at 12:37:26PM -0700, Enrico Granata wrote:
> >> ---------- Forwarded message ---------
> >> From: Enrico Granata <redacted>
> >> Date: Wed, May 5, 2021 at 1:37 PM
> >> Subject: [PATCH v2] Provide detailed specification of virtio-blk
> >> lifetime metrics
> >> To: <redacted>
> >> Cc: <redacted>, <hch@infradead.org>, <mst@redhat.com>,
> >> [ref],
> >> [ref]
> >> 
> >> 
> >> In the course of review, some concerns were surfaced about the
> >> original virtio-blk lifetime proposal, as it depends on the eMMC
> >> spec which is not open
> >> 
> >> Add a more detailed description of the meaning of the fields
> >> added by that proposal to the virtio-blk specification, as to
> >> make it feasible to understand and implement the new lifetime
> >> metrics feature without needing to refer to JEDEC's specification
> >> 
> >> This patch does not change the meaning of those fields nor add
> >> any new fields, but it is intended to provide an open and more
> >> clear description of the meaning associated with those fields.
> >> 
> >> Signed-off-by: Enrico Granata <redacted>
> >> ---
> >> Changes in v2:
> >>   - clarified JEDEC references;
> >>   - added VIRTIO_BLK prefix and cleaned up comment syntax;
> >>   - clarified reserved block references
> >> 
> >>  content.tex | 40 ++++++++++++++++++++++++++++++++--------
> >>  1 file changed, 32 insertions(+), 8 deletions(-)
> >
> > Ping?
> >
> > Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
> 
> [Enrico is currently on leave of absence]
> 
> Is there any outstanding feedback from the linux-block folks? I've lost
> track of this, I'm afraid. (Your R-b is the only feedback I see on this
> list...)
> 
> We can certainly put up a vote. This is one of the things I wanted to
> see fixed for the next release of the standard.

I have CCed Christoph, linux-block@, and virtualization@. Here is the
link to the patch that we're discussing:
https://patchwork.kernel.org/project/linux-block/patch/20210505193655.2414268-1-egranata@google.com/

Stefan
```