Re: [libvirt] [TCK PATCH] block devices: allow specification of size for safety
On Wed, May 05, 2010 at 01:56:20PM -0600, Eric Blake wrote:
On 05/05/2010 01:31 PM, Jim Meyering wrote:
>> Can we provide the option to specify the device serial number so that
>> it's really impossible to trash the wrong device?
>
> Given that this is a good idea, next question is obviously
> how to get the serial number. One way seems to be via hdparm,
> e.g., hdparm -i /dev/sda
>
> /dev/sda:
>
> Model=ST3320620AS, FwRev=3.AAK, SerialNo=9QF6ET0H
Great for SCSI, not so great for USB sticks:
# hdparm -i /dev/sdb
What does the following give you?
scsi_id --whitelisted --replace-whitespace --device=/dev/sdb
/dev/sdb:
HDIO_DRIVE_CMD(identify) failed: Invalid exchange
HDIO_GET_IDENTITY failed: Invalid argument
# echo $?
22
--
Eric Blake eblake(a)redhat.com +1-801-349-2682
Libvirt virtualization library http://libvirt.org