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[173.72.201.135]) by smtp.gmail.com with ESMTPSA id 98sm28670948oti.18.2019.08.03.12.37.17 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 03 Aug 2019 12:37:17 -0700 (PDT) From: "Justin Piszcz" To: Cc: "'LKML'" , , , "'Alan Stern'" References: <006d01d549db$54e42140$feac63c0$@lucidpixels.com> In-Reply-To: Subject: RE: 5.2.x kernel: WD 8TB USB Drives: Unaligned partial completion (resid=78, sector_sz=512) Date: Sat, 3 Aug 2019 15:37:16 -0400 Message-ID: <001b01d54a32$dbb09260$9311b720$@lucidpixels.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQJuodioyS95OAww8I/7mT9ERbmjcKW3HLjQ Content-Language: en-us Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org -----Original Message----- From: Alan Stern [mailto:stern@rowland.harvard.edu]=20 Sent: Saturday, August 3, 2019 3:00 PM To: Justin Piszcz Cc: 'LKML'; linux-usb@vger.kernel.org; linux-scsi@vger.kernel.org Subject: Re: 5.2.x kernel: WD 8TB USB Drives: Unaligned partial = completion (resid=3D78, sector_sz=3D512) On Sat, 3 Aug 2019, Justin Piszcz wrote: > Attached 2 x brand new Western Digital 8TB USB 3.0 drives awhile back = and > ran some file copy tests and was getting these warnings-- is there any = way > to avoid these warnings?=EF=BF=BD I did confirm with parted that the = partition was > aligned but this appears to be something related to the firmware on = the > device according to [1] and [2]? >=20 > [1]=EF=BF=BDhttps://patchwork.kernel.org/patch/9573203/ > [2] https://patchwork.kernel.org/patch/9597797/ Just out of curiosity, why did you not address your email to the author=20 or committer of this patch? Surely they would be the people in the=20 best position to answer your questions. [ .. ] Fixed. I had been researching this issue and did not find any useful notes on = the mailing lists--hopefully this will help others if there's a copy of = the response on the mailing list. These drives [1] [2] are the ones noted as affected when used on Linux = [1] plugged in directly to a Linux PC (w/USB 3.0/XHCI) and [2] when in a = USB enclosure with a JMicron SATA Bridge. [1] WDBBGB0080HBK-NESN - = https://www.wd.com/products/external-storage/my-book-new.html#WDBBGB0080H= BK-NESN [2] WD40EZRZ-22GXCB0 - = https://www.wd.com/products/internal-storage/wd-blue-pc-desktop-hard-driv= e.html (In a USB enclosure with a JMicron SATA Bridge - per Markus) Regards, Justin.