Re: [PATCH 07/14] target/sbc: Add P_TYPE + PROT_EN bits to READ_CAPACITY_16

[Sagi Grimberg]

> Back to the original question, I don't think Sagi was
> asking if it was valid to do a legacy/unprotected READ,
> it was what to expect with a protected READ on
> unwritten blocks:
>
> > So this takes me to a corner I still don't understand, if
> > a LUN is pre-formatted as T10-protected, what happens to
> > unwritten blocks read?
>
> So the precise answer is: the PI will be all 0xff bytes,
> unless logical provisioning is enabled, LBPRZ=0 and the
> device's compliance predates sbc3r34.pdf (November 2012).
>
> Doug Gilbert

Thanks Doug,

This answer translates directly into a fix in my T10-PI offload API.

Sagi.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/