> "KY" == KY Srinivasan writes:
KY> We will fix this bug in the next release of Windows; we are also
KY> looking at backporting the fix to prior versions of Windows.
Excellent. Thanks for looking into this!
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Martin K. Petersen Oracle Linux Engineering
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> Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests
>
> On Mon, 2014-07-28 at 19:05 +, KY Srinivasan wrote:
> >
> > >
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> Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests
>
> On Mon, 2014-07-28 at 19:05 +, KY Srinivasan wrote:
> >
> > >
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> > Subject: Re: [PATCH v2 3/3] [
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> Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests
>
> >>>>> "KY" == KY Srinivasan
> "KY" == KY Srinivasan writes:
KY,
KY> "At the time thin-provisioning was defined, the discovery
KY> information was first proposed in READ CAPACITY 16 command. And then
KY> moved into the new dedicated VPD page - B2h. You can see the
KY> information reported in this VPD page is richer than
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> Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests
>
> >>>>> "KY" == KY Srinivas
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> Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests
>
> >>>>> "KY" == KY Srinivas
> "KY" == KY Srinivasan 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> nati
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> Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests
>
> >>>>> "KY" == KY Srinivasan wr
> "KY" == KY Srinivasan writes:
>> The LBP VPD page flags UNMAP as being supported. Do you actually
>> support UNMAP to DSM TRIM SCSI-ATA translation?
KY> I have been told by the Windows folks that this is done. I am trying
KY> to get additional details.
Great! I'd just like to have a reaso
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> Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests
>
> >>>>> "KY" == KY Srinivasan w
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> Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests
>
> On Fri, 2014-07-25 at 16:47 +, KY Srinivasan wrote:
> >
> > >
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> > Subject: R
> "KY" == KY Srinivasan writes:
KY> For the pass through case, the host validates the request and passes
KY> the request to the device. However, not all scsi commands are
KY> passed through even though the device it is being passed through may
KY> support the command. WRITE_SAME is one such
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> Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests
>
> >>>>> "Sitsofe" == Sitsofe Whe
On Thu, Jul 24, 2014 at 08:35:13AM -0700, Christoph Hellwig wrote:
> On Thu, Jul 24, 2014 at 08:34:19AM -0700, Christoph Hellwig wrote:
> > I agree - I'd like to pull in KY's simple fix as soon as I get a second
> > review for it.
>
> Ok, looks like I just got that from Hannes. Let's see if there
> "Sitsofe" == Sitsofe Wheeler writes:
Sitsofe> So we can see it is really a SATA device that announces discard
Sitsofe> correctly and supports discard through WRITE_SAME(16).
No, that's the SATA device that announces support for DSM TRIM, and as a
result the Linux SATL reports support for W
On Thu, Jul 24, 2014 at 09:54:24AM -0400, Martin K. Petersen wrote:
> > "Sitsofe" == Sitsofe Wheeler writes:
>
> Sitsofe> Fix incorrectly named variable. Some block devices (such as
> Sitsofe> Hyper-V passthrough SSDs) support logical block provisioning
> Sitsofe> (e.g. via UNMAP) but don't
On Thu, Jul 24, 2014 at 08:34:19AM -0700, Christoph Hellwig wrote:
> I agree - I'd like to pull in KY's simple fix as soon as I get a second
> review for it.
Ok, looks like I just got that from Hannes. Let's see if there's more
to be done for the pass through case, but I'd rather wait for the nex
On Thu, Jul 24, 2014 at 09:54:24AM -0400, Martin K. Petersen wrote:
> I'm very much against short-circuiting the LBP logic in a passthrough
> driver because then we might end up in the exact situation we were
> trying to avoid with this patch series. Namely sending down commands
> unsupported by th
> "Sitsofe" == Sitsofe Wheeler writes:
Sitsofe> Fix incorrectly named variable. Some block devices (such as
Sitsofe> Hyper-V passthrough SSDs) support logical block provisioning
Sitsofe> (e.g. via UNMAP) but don't set lbpme thus disabling discard.
The fix for an SSD that is known to suppor
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