> -----Original Message-----
> From: Martin K. Petersen [mailto:martin.peter...@oracle.com]
> Sent: Saturday, July 26, 2014 12:25 PM
> To: KY Srinivasan
> Cc: Martin K. Petersen; Sitsofe Wheeler; Christoph Hellwig;
> gre...@linuxfoundation.org; linux-ker...@vger.kernel.org;
> de...@linuxdriverproject.org; oher...@suse.com; a...@canonical.com;
> jasow...@redhat.com; jbottom...@parallels.com; linux-
> s...@vger.kernel.org
> Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests
> 
> >>>>> "KY" == KY Srinivasan <k...@microsoft.com> writes:
> 
> >> Great! I'd just like to have a reasonable level of confidence in
> >> what's happening down the stack before I entertain turning something
> >> on that's not being properly advertised.
> 
> KY> As I look at the output of inquiry between Linux on Hyper-V and
> KY> native Linux, is not specifying conformance level the main issue?
> 
> The main problem for this particular use case (aside from the issue we've
> already addressed) is that the passthrough device (SATA SSD) has
> LBPME=0 in the READ CAPACITY(16) response. The LBP VPD is correctly
> provided with LBPU flag set but because LBPME is reported as disabled we
> will not attempt to issue UNMAP commands to the device.

Oh; ok. I missed the read_capacity response.

Thanks,

K. Y
> 
> --
> Martin K. Petersen    Oracle Linux Engineering
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