linux-kernel - Re: Problems with USB disk [solved]

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Message-ID: <20070912234237.GB455@kroah.com>
Date:	Wed, 12 Sep 2007 16:42:37 -0700
From:	Greg KH <greg@...ah.com>
To:	Mark Lord <lkml@....ca>
Cc:	Chuck Ebbert <cebbert@...hat.com>,
	Niels <zorglub_olsen@...mail.com>, linux-kernel@...r.kernel.org,
	linux-scsi <linux-scsi@...r.kernel.org>,
	USB development list <linux-usb-devel@...ts.sourceforge.net>
Subject: Re: Problems with USB disk [solved]

On Wed, Sep 12, 2007 at 06:10:50PM -0400, Mark Lord wrote:
> Chuck Ebbert wrote:
>> On 08/13/2007 10:50 AM, Niels wrote:
>>> On Sunday 12 August 2007 11:54, Niels wrote:
>>>
>>>> On Friday 10 August 2007 14:43, Niels wrote:
>>>>
>>>>> On Wednesday 08 August 2007 12:57, Ismail D??nmez wrote:
>>>>>
>>>>>> On Wednesday 08 August 2007 13:48:29 you wrote:
>>>>>>> On Tuesday 07 August 2007 23:18, Greg KH wrote:
>>>>>>>> On Tue, Aug 07, 2007 at 10:26:15PM +0200, Niels wrote:
>>>>>>>>> Hi,
>>>>>>>>>
>>>>>>>>> I'm having problems with a new 500 GB USB disk. It works, but
>>>>>>>>> sometimes I get these in dmesg:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> usb 1-3: reset high speed USB device using ehci_hcd and address 2
>>>>>>>>> usb 5-1: USB disconnect, address 2
>>>>>>>>> drivers/usb/class/usblp.c: usblp0: removed
>>>>>>>>> sd 0:0:0:0: Device not ready: <6>: Sense Key : 0x2 [current]
>>>>>>>>>
>>>>>>>>> : ASC=0x4 ASCQ=0x2
>>>>>>>>>
>>>>>>>>> end_request: I/O error, dev sda, sector 254148215
>>>>>>>>> sd 0:0:0:0: Device not ready: <6>: Sense Key : 0x2 [current]
>>>>>>>>>
>>>>>>>>> : ASC=0x4 ASCQ=0x2
>>>>>>>>>
>>>>>>>>> end_request: I/O error, dev sda, sector 252434023
>>>>>>>>> EXT3-fs error (device sda1): ext3_find_entry: reading directory
>>>>>>>>> #15761836 offset 0
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> There's also a printer connected. This is on a pci/usb2 card. When
>>>>>>>>> the above happens, I get I/O errors. When I mount the drive next,
>>>>>>>>> there are errors and often missing files. Quite annoying!
>>>>>>>>>
>>>>>>>>> Kernel is 2.6.21
>>>>>>>>>
>>>>>>>>> What's going on?
>>>>>>>> You have a low voltage issue, or a bad cable.  The device is
>>>>>>>> electronically disconnecting itself.  Try using a externally-powered
>>>>>>>> hub, or a new cable.
>>>>>> I am seeing a similar problem with 2.6.22 and 2.6.23-* kernels with my
>>>>>> 60G iPod Video, works fine with 2.6.18 kernel though.
>>>>>>
>>>>> So far I'm seeing this:
>>>>>
>>>>> - On 2.6.21 I mount the drive. After a while it spins down, and when I
>>>>> then unmount it, an error pops up in dmesg.
>>>>>
>>>>> - On 2.6.18 I can't provoke the same error. The drive doesn't appear to
>>>>> spin down. I don't know if the data corruption from 2.6.21 occurs with
>>>>> regular use.
>>>>>
>>>>> There are a number of other factor I need to eliminate on my system, 
>>>>> but
>>>>> that's it so far. CONFIG_USB_SUSPEND is not set on either kernel.
>>>> OK, on a vanilla 2.6.18.8 I also have this problem, with both the 
>>>> pci/usb2
>>>> card, and the usb1 on the board. I listen to music from the drive, and
>>>> after some time (10-20 minutes or so), it freaks out:
>>>>
>>>> =========
>>>> sd 1:0:0:0: Device not ready: <6>: Current: sense key=0x2
>>>>     ASC=0x4 ASCQ=0x2
>>>> end_request: I/O error, dev sda, sector 126693711
>>>> sd 1:0:0:0: Device not ready: <6>: Current: sense key=0x2
>>>>     ASC=0x4 ASCQ=0x2
>>>> end_request: I/O error, dev sda, sector 126693711
>>>> sd 1:0:0:0: Device not ready: <6>: Current: sense key=0x2
>>>>     ASC=0x4 ASCQ=0x2
>>>> end_request: I/O error, dev sda, sector 126693711
>>>> =========
>>>>
>>> Using a new PSU and a powered hub made no difference. But I found a 
>>> solution
>>> here:
>>>
>>> http://alienghic.livejournal.com/382903.html
>>>
>>> Basically, the problem is, as suspected, that the drive spins down / goes 
>>> to
>>> suspend. This can be disabled with "sdparm --clear STANDBY -6 /dev/sda".
>>>
>>> It seems to me to be an error that the kernel reports this as something 
>>> like
>>> a hardware failure. Or at least very misleading.
>>>
>> Oh, nice. The usb-storage (SCSI) disk spins itself down and we can't 
>> handle that.
>> Should we be disabling auto-spindown when we connect the device, or be 
>> able to
>> handle this by sending the start command when needed?
>
> There's more to this.
>
> My Sandisk Cruzer Micro 1GB USB sticks suffer from this regression.
> Plug one in, it works for about 5 seconds, then the light goes off (bad).
> Next access requires a 30s timeout + reset.  Etc..
>
> This is with 2.6.23-rc6.
> Works without any problems in 2.6.22.  REGRESSION.

Disable CONFIG_USB_SUSPEND, that will fix the problem for you, or we can
add your device to the quirk list.

thanks,

greg k-h
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