[CentOS] USB device not connected (CentOS 5.3)

Craig White craigwhite at azapple.com
Wed Apr 29 02:24:43 UTC 2009


Could be a problem with the USB port on the CentOS computer, or if you
are using a cable on with that computer, the cable.

Craig

On Tue, 2009-04-28 at 15:11 -0700, Bart Schaefer wrote:
> I just tried this with CentOS 5.3 as well, and got exactly the same
> symptoms and dmesg output.  (As a point of comparison, Ubunu 8.04 on
> my work laptop is able to access the drive.)
> 
> Obviously "not detected" is a misapprehension, though I'm puzzled why
> "lsusb" doesn't show it.  The device is there even though the
> partition table can't be read.
> 
> ---------- Forwarded message ----------
> From: Bart Schaefer <barton.schaefer at gmail.com>
> Date: Tue, Apr 28, 2009 at 10:58 AM
> Subject: Re: [CentOS] USB device not detected (CentOS 4.7)
> To: CentOS mailing list <centos at centos.org>
> 
> 
> On Tue, Apr 28, 2009 at 10:01 AM, Craig White <craigwhite at azapple.com> wrote:
> > On Tue, 2009-04-28 at 09:48 -0700, Bart Schaefer wrote:
> >> I recently purchased an I/O Magic USB enclosure for 3.5" IDE
> > ----
> > check what it says about the drive in dmesg after you plugged it in.
> 
> Hmm.
> 
> usb 1-6: new high speed USB device using address 4
> scsi7 : SCSI emulation for USB Mass Storage devices
>  Vendor: HDS72251  Model: 6VLAT80           Rev:  0 0
>  Type:   Direct-Access                      ANSI SCSI revision: 02
> SCSI device sdd: 321672960 512-byte hdwr sectors (164697 MB)
> sdd: assuming drive cache: write through
> SCSI device sdd: 321672960 512-byte hdwr sectors (164697 MB)
> sdd: assuming drive cache: write through
> 
> (so far this is correct, it's a 160GB drive in the enclosure)
> (the leading space on the next line is literally there in dmesg)
> 
>  sdd:SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> ldm_validate_partition_table(): Disk read failed.
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
>  unable to read partition table
> Attached scsi disk sdd at scsi7, channel 0, id 0, lun 0
> USB Mass Storage device found at 4
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 8
> Buffer I/O error on device sdd, logical block 1
> 
> (the last three lines then repeat for each of sectors 16-568, logical
> blocks 2-71)
> 
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 512
> Buffer I/O error on device sdd, logical block 64
> usb 1-6: USB disconnect, address 4
> 
> (that's where I unplugged)
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