linux-ext4 - [Bug 89511] USB-storage mount error

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Date:	Wed, 22 Jul 2015 17:39:01 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 89511] USB-storage mount error

https://bugzilla.kernel.org/show_bug.cgi?id=89511

Dan Williams <dcbw@...hat.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dcbw@...hat.com

--- Comment #68 from Dan Williams <dcbw@...hat.com> ---
I have a drive with this problem and I tested 4.0.8 with this hunk added to the
patch above.

UNUSUAL_DEV(  0x0bc2, 0x0888, 0x0000, 0x0000,
              "Seagate",
              "USB 2.0 Pocket Hard Drive",
              USB_SC_DEVICE, USB_PR_DEVICE, NULL,
              US_FL_NO_SYNCHRONIZE_CACHE),

I don't have the linux-usb thread around so I can reply to
http://www.spinics.net/lists/linux-usb/msg126364.html, but here's the result
of:

[dcbw@...alhost ~]$ sudo hdparm -W 0 --prefer-ata12 /dev/sdb

/dev/sdb:
 setting drive write-caching to 0 (off)
SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 00 00 00 00 20 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 00 00 00 00 20 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 00 00 00 00 20 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 00 00 00 00 20 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 00 00 00 00 20 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 write-caching = not supported

What was the upstream resolution on this one?

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