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To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: XFS internal error XFS_WANT_CORRUPTED_GOTO
From: Amit Sahrawat <amit.sahrawat83@xxxxxxxxx>
Date: Wed, 27 Jul 2011 10:03:06 +0530
Cc: Ajeet Yadav <ajeet.yadav.77@xxxxxxxxx>, Dave Chinner <david@xxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
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In-reply-to: <20110726102759.GA20478@xxxxxxxxxxxxx>
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This problem is with the SCSI driver for USB HDD. We checked for SATA
specific USB HDD and the problem is not happening there.
The issue lies with the non-availability of internal write cache
flushing routine in SCSI Driver.

Thanks for all the support.

Amit Sahrawat

On Tue, Jul 26, 2011 at 3:57 PM, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
> On Tue, Jul 26, 2011 at 03:17:48PM +0530, Ajeet Yadav wrote:
>> Hello Dave,
>> I have seen this problem comes only with USB HDD (we have tired
>> different USB HDD, but it seems common with HDD), while USB FLASH
>> works fine.
> Can you make sure the USB HDD actually does flush caches reliably and
> doesn't lose data it claims it guaranteed to disk?  In addition to the
> generally bad implementation quality of USB periphals there is a large
> chance of beeing lost in translation when converting the SCSI WCE mode
> and FUA bit concepts to the ATA equivalents.

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