RE: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests

From: KY Srinivasan
Date: Sat Jul 26 2014 - 22:09:43 EST

> -----Original Message-----
> From: Martin K. Petersen [mailto:martin.petersen@xxxxxxxxxx]
> Sent: Saturday, July 26, 2014 12:25 PM
> To: KY Srinivasan
> Cc: Martin K. Petersen; Sitsofe Wheeler; Christoph Hellwig;
> gregkh@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> devel@xxxxxxxxxxxxxxxxxxxxxx; ohering@xxxxxxxx; apw@xxxxxxxxxxxxx;
> jasowang@xxxxxxxxxx; jbottomley@xxxxxxxxxxxxx; linux-
> scsi@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests
> >>>>> "KY" == KY Srinivasan <kys@xxxxxxxxxxxxx> 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.


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