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From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Tarkan Erimer <tarkan.erimer@turknet.net.tr>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
	linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
	Matthew Wilcox <matthew@wil.cx>
Subject: Re: [BISECTED] Re: [BUG] Linux-2.6.31-rc1 Fails To Recognize Some USB Disks
Date: Fri, 24 Jul 2009 10:02:37 -0400	[thread overview]
Message-ID: <yq1fxcmnpqa.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <4A69932E.90906@turknet.net.tr> (Tarkan Erimer's message of "Fri, 24 Jul 2009 13:55:42 +0300")

>>>>> "Tarkan" == Tarkan Erimer <tarkan.erimer@turknet.net.tr> writes:

Tarkan> Today, I had time to bisect and you were right: The below commit
Tarkan> related to capacity detection changes in SCSI subsystem,as you
Tarkan> mentioned, seems the cause of the problem.

Thanks for bisecting this.


Tarkan>     Detect non-rotational devices and set the queue flag
Tarkan>     accordingly.

Aha, so you're getting USB resets because your USB-ATA bridge gets
confused when we ask it a simple question.  What a marvel of modern
engineering that thing is...

Please send me the output of:

sg_inq -e /dev/foo
sg_inq -l 16 /dev/foo
sg_inq -l 16 -e /dev/foo
sg_inq -l 36 /dev/foo
sg_inq -l 36 -e /dev/foo
sg_vpd -p sv /dev/foo
sg_vpd -p bl /dev/foo
sg_vpd -p bdc /dev/foo

-- 
Martin K. Petersen	Oracle Linux Engineering

  parent reply	other threads:[~2009-07-24 14:03 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-26  7:03 [BUG] Linux-2.6.31-rc1 Fails To Recognize Some USB Disks Tarkan Erimer
2009-06-29  3:21 ` Martin K. Petersen
2009-06-29  8:17   ` Tarkan Erimer
2009-06-29 14:30     ` Martin K. Petersen
2009-07-15  7:46       ` Tarkan Erimer
2009-07-20  2:25         ` Martin K. Petersen
2009-07-21  8:08           ` Tarkan Erimer
2009-07-24 10:55       ` [BISECTED] " Tarkan Erimer
2009-07-24 11:44         ` Tarkan Erimer
2009-07-24 14:02         ` Martin K. Petersen [this message]
2009-07-24 15:17           ` Tarkan Erimer
2009-07-27  1:28             ` Martin K. Petersen
2009-07-27  2:06               ` Matthew Wilcox
2009-07-27  2:43                 ` Martin K. Petersen
2009-07-27  8:27                   ` Boaz Harrosh
2009-07-27 14:29                     ` Martin K. Petersen
2009-07-27 14:50                       ` Matthew Wilcox
2009-07-27 15:10                         ` Martin K. Petersen
2009-07-27 14:51                       ` Boaz Harrosh
2009-07-27 15:19                         ` Martin K. Petersen
2009-07-27 15:40                           ` Boaz Harrosh
2009-07-27 15:47                             ` Boaz Harrosh
2009-07-27 15:55                             ` Martin K. Petersen
2009-07-27  7:31               ` Tarkan Erimer

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