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<p class="MsoPlainText">All,<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">The current driver does not check for Metadata size in the Identify Namespace LBA Format. It assumes that the metadata size is always 0. This is a bug in the driver and should be fixed.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">The fix should be similar to the following:<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">- During initialization, the driver sends identify namespace to a NVMe device to discover the namespace configuration (Namespace size, capacity, LBA data size ...etc).<o:p></o:p></p>
<p class="MsoPlainText"><span style="color:red">- If the Metadata size (MS) in the Identify - LBA Format Data structure is not 0,<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="color:red"> Ignore this namespace and don't advertise it to Windows.<o:p></o:p></span></p>
<p class="MsoPlainText">- Otherwise<o:p></o:p></p>
<p class="MsoPlainText"> Do the normal initialization as we are doing currently<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">When a namespace is formatted with non-zero metadata size, the Metadata Pointer (MPTR) is assumed to point to a valid metadata buffer. Since the current driver does not support meta-data, the metadata pointer is not set up to point
to a valid buffer. The driver cannot use this namespace and must skip it.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Please let me know if you disagree. Otherwise, I’ll ask Alex to put in the fix.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Thanks<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">-Kwok<o:p></o:p></p>
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