Messages in this thread | | | Date | Mon, 13 Jan 2014 18:33:39 +0200 | From | Sagi Grimberg <> | Subject | Re: [PATCH 07/14] target/sbc: Add P_TYPE + PROT_EN bits to READ_CAPACITY_16 |
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> 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.
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