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From:   Damien Le Moal <Damien.LeMoal@wdc.com>
To:     "Martin K. Petersen" <martin.petersen@oracle.com>,
        Justin Piszcz <jpiszcz@lucidpixels.com>
CC:     'LKML' <linux-kernel@vger.kernel.org>,
        "linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
        "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>
Subject: Re: 5.2.x kernel: WD 8TB USB Drives: Unaligned partial completion
 (resid=78, sector_sz=512)
Thread-Topic: 5.2.x kernel: WD 8TB USB Drives: Unaligned partial completion
 (resid=78, sector_sz=512)
Thread-Index: AdVJ2z/+9mq0jIkOQpG4zabX2Rwi3A==
Date:   Tue, 13 Aug 2019 10:48:43 +0000
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 <yq1ftmcct1j.fsf@oracle.com>
 <002d01d54dc3$17c278c0$47476a40$@lucidpixels.com>
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On 2019/08/12 19:12, Martin K. Petersen wrote:=0A=
> =0A=
> Justin,=0A=
> =0A=
>>> Attached 2 x brand new Western Digital 8TB USB 3.0 drives awhile back=
=0A=
>>> and ran some file copy tests and was getting these warnings-- is=0A=
>>> there any way to avoid these warnings?  I did confirm with parted=0A=
>>> that the partition was aligned but this appears to be something=0A=
>>> related to the firmware on the device according to [1] and [2]?=0A=
> =0A=
>> sg_vpd_bdc.txt=0A=
>> Block device characteristics VPD page (SBC):=0A=
>>   Nominal rotation rate: 5400 rpm=0A=
>>   Product type: Not specified=0A=
>>   WABEREQ=3D0=0A=
>>   WACEREQ=3D0=0A=
>>   Nominal form factor: 3.5 inch=0A=
>>   ZONED=3D0=0A=
> =0A=
> Damien: What can we do to limit the messages in cases like this? Would=0A=
> it make sense to make the residual warning conditional on sd_is_zoned()?=
=0A=
> =0A=
=0A=
Justin,=0A=
=0A=
Can you send the output of "lsscsi" for these drives ? I need the exact dis=
k=0A=
model ref name and FW version to see if there is an update for this problem=
, if=0A=
it is a known one. If it is not, I will signal it and get a fix started.=0A=
=0A=
Best regards.=0A=
=0A=
-- =0A=
Damien Le Moal=0A=
Western Digital Research=0A=