On Mon, 12 Nov 2012, Paolo Bonzini wrote:
> Il 12/11/2012 16:10, James Bottomley ha scritto:
> >> Actually it only turns it on for large capacity drives, as said in the
> >> comment. sdp->force_read_16 only matters for >2TB drives:
> >
> > If you follow the discussion, we'll need to turn it on
Il 12/11/2012 16:10, James Bottomley ha scritto:
>> Actually it only turns it on for large capacity drives, as said in the
>> comment. sdp->force_read_16 only matters for >2TB drives:
>
> If you follow the discussion, we'll need to turn it on for some drives
> regardless of size.
Even if the tw
On Mon, 2012-11-12 at 10:01 -0500, Jason J. Herne wrote:
> > Any reason not to do this always on >2TB drives, which basically means
> > changing this:
> >
> > - } else if (block > 0x) {
> > + } else if (sdkp->capacity > 0x) {
> >
> > and nothing else?
>
> This was the i
On Mon, Nov 12, 2012 at 10:10 AM, James Bottomley
wrote:
> On Mon, 2012-11-12 at 15:31 +0100, Paolo Bonzini wrote:
>> Il 12/11/2012 12:33, James Bottomley ha scritto:
>> > On Fri, 2012-11-09 at 11:08 -0500, Jason J. Herne wrote:
>> >> diff --git a/drivers/usb/storage/scsiglue.c
>> >> b/drivers/usb
On Mon, 2012-11-12 at 15:31 +0100, Paolo Bonzini wrote:
> Il 12/11/2012 12:33, James Bottomley ha scritto:
> > On Fri, 2012-11-09 at 11:08 -0500, Jason J. Herne wrote:
> >> diff --git a/drivers/usb/storage/scsiglue.c
> >> b/drivers/usb/storage/scsiglue.c
> >> index 13b8bcd..6ff785e 100644
> >> ---
On Mon, Nov 12, 2012 at 9:31 AM, Paolo Bonzini wrote:
> Il 12/11/2012 12:33, James Bottomley ha scritto:
>> On Fri, 2012-11-09 at 11:08 -0500, Jason J. Herne wrote:
>>> diff --git a/drivers/usb/storage/scsiglue.c
>>> b/drivers/usb/storage/scsiglue.c
>>> index 13b8bcd..6ff785e 100644
>>> --- a/driv
Il 12/11/2012 12:33, James Bottomley ha scritto:
> On Fri, 2012-11-09 at 11:08 -0500, Jason J. Herne wrote:
>> diff --git a/drivers/usb/storage/scsiglue.c
>> b/drivers/usb/storage/scsiglue.c
>> index 13b8bcd..6ff785e 100644
>> --- a/drivers/usb/storage/scsiglue.c
>> +++ b/drivers/usb/storage/scsigl
On Fri, 2012-11-09 at 11:08 -0500, Jason J. Herne wrote:
> diff --git a/drivers/usb/storage/scsiglue.c
> b/drivers/usb/storage/scsiglue.c
> index 13b8bcd..6ff785e 100644
> --- a/drivers/usb/storage/scsiglue.c
> +++ b/drivers/usb/storage/scsiglue.c
> @@ -251,6 +251,11 @@ static int slave_configure(s
On Fri, 2012-11-09 at 16:33 +, Elliott, Robert (Server Storage)
wrote:
> I recommend broadening this patch. T10 is discussing making READ
> (10), WRITE (10), etc. obsolete in SBC-4 in favor of their 16-byte CDB
> counterparts.
>
> The algorithm should be:
> 1. During discovery, determine if
On Nov 11 Stefan Richter wrote:
> On Nov 09 Elliott, Robert (Server Storage) wrote:
> > I recommend broadening this patch. T10 is discussing making READ (10),
> > WRITE (10), etc. obsolete in SBC-4 in favor of their 16-byte CDB
> > counterparts.
> >
> > The algorithm should be:
> > 1. During
On Nov 09 Elliott, Robert (Server Storage) wrote:
> I recommend broadening this patch. T10 is discussing making READ (10), WRITE
> (10), etc. obsolete in SBC-4 in favor of their 16-byte CDB counterparts.
>
> The algorithm should be:
> 1. During discovery, determine if 16-byte CDBs are supporte
nal Message-
From: linux-scsi-ow...@vger.kernel.org
[mailto:linux-scsi-ow...@vger.kernel.org] On Behalf Of Jason J. Herne
Sent: Friday, November 09, 2012 9:08 AM
To: linux-scsi@vger.kernel.org
Cc: linux-...@vger.kernel.org; st...@rowland.harvard.edu; Jason J. Herne
Subject: [PATCH] USB enclosures se
On Fri, 9 Nov 2012, Jason J. Herne wrote:
> Hello, I've noticed Linux seems to have issues with external USB
> enclosures containing drives > 2 TB. The USB mass storage driver
> apparently emulates a SCSI device and sends a read/write(10) for all
Actually, it's the SCSI disk driver which decide
From: "Jason J. Herne"
Force large capacity (> 2TB) drives in USB enclosures to use READ(16) instead
of READ(10). Some(most/all?) enclosures do not like READ(10) commands when a
large capacity drive is installed.
Signed-off-by: Jason J. Herne
---
drivers/scsi/sd.c |7 +--
Hello, I've noticed Linux seems to have issues with external USB
enclosures containing drives > 2 TB. The USB mass storage driver
apparently emulates a SCSI device and sends a read/write(10) for all
requests where the target sector is not large enough to require the
use of read(16). The issue is
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