Re: External USB3 disk fails with "Invalid field in cdb"

["Michael Büsch" <m@bues.ch>]

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Thanks for your analysis.

On Fri, 27 Jun 2014 11:15:41 +0100
"Bryn M. Reeves" <bmr@redhat.com> wrote:

> On Thu, Jun 26, 2014 at 08:55:19PM +0200, Michael Büsch wrote:
> > Jun 26 20:47:14 wiggum kernel: [156019.870310] sd 22:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB)
> > Jun 26 20:47:14 wiggum kernel: [156019.870653] sd 22:0:0:0: [sdb] Write Protect is off
> > Jun 26 20:47:14 wiggum kernel: [156019.870659] sd 22:0:0:0: [sdb] Mode Sense: 47 00 10 08
> 
> The disk says it supports FUA:

Is this the disk reporting that, or the USB->SATA controller?

The disk works perfectly fine, if connected via on board SATA controller.

> Looks like a WRITE(10) with the FUA bit set:
> 
> > Jun 26 20:47:27 wiggum kernel: [156032.938239] sd 22:0:0:0: [sdb] CDB:
> > Jun 26 20:47:27 wiggum kernel: [156032.938241] Write(10): 2a 08 1d 04 00 3f 00 00 08 00
> >
> > Does somebody have a hint to debug this?
> 
> I'd guess the device lies about supporting FUA. There seems to be
> another report on the Debian lists of the same problem with a similar
> JMicron enclosure:

Is there a workaround for this problem, or even a quirk-patch that I could test?


-- 
Michael.

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