[CentOS] Recent kernel update vs usb disk

wwp subscript at free.fr
Wed Mar 7 09:52:38 EST 2012


Hello John,


On Wed, 7 Mar 2012 06:39:50 -0800 (PST) John Doe <jdmls at yahoo.com> wrote:

> From: wwp <subscript at free.fr>
> 
> > No, the device is not even accessible using /dev/sdXX. Gparted and
> > other tools don't even see it. But my laptop's internal disk and other
> > externals USB (SATA or IDE) disks are accessible.
> > The issue is not present with kernel 2.6.32-131.21.1.el6,
> > it's present with updates 2.6.32-220.4.1.el6 and 2.6.32-220.4.2.el6.
> > FYI it's a CentOS6 64bit installed on a DELL Latitude E6500.
> > I tried with another laptop (DELL D810) with an up-to-date CentOS6
> > (32bit) installed on it: same behaviour, the disk is not accessible w/
> > latest kernel but is accessible w/ 2.6.32-131.
> 
> I was on a CentOS 5...
> I tried on a 2.6.32-220.4.1.el6.x86_64 and it still works fine with my USB key...
> usb 1-4: new high speed USB device using ehci_hcd and address 2
> usb 1-4: New USB device found, idVendor=1b1c, idProduct=0b29
> usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> usb 1-4: Product: Voyager Mini
> usb 1-4: Manufacturer: Corsair
> usb 1-4: SerialNumber: 37b47c25e57156
> usb 1-4: configuration #1 chosen from 1 choice
> Initializing USB Mass Storage driver...
> scsi4 : SCSI emulation for USB Mass Storage devices
> usbcore: registered new interface driver usb-storage
> USB Mass Storage support registered.
> usb-storage: device found at 2
> usb-storage: waiting for device to settle before scanning
> usb-storage: device scan complete
> scsi 4:0:0:0: Direct-Access     Corsair  Voyager Mini     0.00 PQ: 0 ANSI: 2
> sd 4:0:0:0: Attached scsi generic sg3 type 0
> sd 4:0:0:0: [sdc] 15771759 512-byte logical blocks: (8.07 GB/7.52 GiB)
> sd 4:0:0:0: [sdc] Write Protect is off
> sd 4:0:0:0: [sdc] Mode Sense: 00 00 00 00
> sd 4:0:0:0: [sdc] Assuming drive cache: write through
> sd 4:0:0:0: [sdc] Assuming drive cache: write through
>  sdc: sdc1
> sd 4:0:0:0: [sdc] Assuming drive cache: write through
> sd 4:0:0:0: [sdc] Attached SCSI removable disk
> 
> So, apparently for you it stops just before the usbcore...
> Wild guess... USB3 drive?

No, USB2 drive with SATA disk inside. All other USB storage disks
(keys, IDE or SATA disks) do work as expected) *but* this one.


Regards,

-- 
wwp
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