Re: how to get serial_no from usb HD disk (HDIO_GET_IDENTITYioctl, hdparm -i)

[Kay Sievers]

On Sat, 2007-01-06 at 11:59 -0500, Stephen Clark wrote:
> Kay Sievers wrote:
> >On 1/6/07, Greg KH <greg@xxxxxxxxx> wrote:
> >>On Fri, Jan 05, 2007 at 12:27:34AM +0200, Yakov Lerner wrote:
> >>    
> >>>How can I get serial_no from usb-attached HD drive ?
> >>>
> >>use the *_id programs that come with udev, they show you how to properly
> >>do that.
> >
> >Only "advanced" ATA-USB bridges will offer you the serial number the
> >adapter reads from the disk on power-up. The usual id-tools will just
> >work fine on theses bridges.
> >
> >There is no way to reach that information with most of the cheap USB
> >storage-adapters.

> I am looking to buy a usb to ata adapter can you name some of the 
> advanced adapters?

I have a nice working bridge, in a no-name 2.5" disk-enclosure:
  $ lsusb
  Bus 005 Device 007: ID 04b4:6830 Cypress Semiconductor Corp. USB-2.0 IDE Adapter

  $ scsi_id -x -g -p0x80 -s/block/sdb -d/dev/sdb
  ID_VENDOR=TOSHIBA
  ID_MODEL=MK1017GAP
  ID_REVISION=0000
  ID_SERIAL=STOSHIBA_MK1017GAP_144M6603
  ID_SERIAL_SHORT=144M6603
  ID_TYPE=disk
  ID_BUS=scsi

  $ /lib/udev/usb_id -x /block/sdb
  ID_VENDOR=TOSHIBA
  ID_MODEL=MK1017GAP
  ID_REVISION=0000
  ID_SERIAL=TOSHIBA_MK1017GAP_DEF107727402
  ID_TYPE=disk
  ID_BUS=usb

Another one just shows for exactly the same disk put behind the bridge:
  $ lsusb
  Bus 005 Device 012: ID 0402:5621 ALi Corp. USB 2.0 Storage Device

  $ scsi_id -x -g -p0x80 -s/block/sdb -d/dev/sdb

  $ /lib/udev/usb_id -x /block/sdb
  ID_VENDOR=USB_2.0
  ID_MODEL=Storage_Device
  ID_REVISION=0100
  ID_SERIAL=USB_2.0_Storage_Device
  ID_TYPE=disk
  ID_BUS=usb


Kay

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