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<p class="MsoNormal">This question is based on a NVMe 1.0.e spec and code base. I have what I believe is a 1.0.e code base because about 6 months ago I asked this list how to retrieve such a code base, and went ahead and pulled the code based on the feedback.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My question is concerning “Set Features- LBA Range Type”. This is an optional command according to the spec. However, the code base I retrieved acts as if this is a mandatory command for an NVMe device setup for 1 namespace. NVMe driver
will issue a “NVMeDriverFatalError” if this is not implemented by the device to at least return 0 successfully for “Number of LBA Ranges” in the NVMe completion packet. I’m curious to why this is and if this is an optional command, why the NVMe driver:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>issues it in the first place<o:p></o:p></p>
<p class="MsoListParagraph">or<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>in the event of an error, like Invalid Command Opcode, or in the event the command is not implemented, why the driver cannot be a bit more flexible and move on instead of stopping.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks!<o:p></o:p></p>
<p class="MsoNormal">Jay<o:p></o:p></p>
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