usb drive reconnect after power interruption

[josh at offthehill.org (Josh ChaitinPollak)]

On Apr 25, 2006, at 4:15 PM, John Abreau wrote:

> dsr at tao.merseine.nu wrote:
>> On Tue, Apr 25, 2006 at 02:45:09PM -0400, John Abreau wrote:
>>> I have a VMware guest OS on a usb2 external drive, and a short  
>>> time ago the office lost power for a couple minutes. When power  
>>> came back on, my laptop saw the usb drive as a brand new drive,  
>>> and won't mount it under its old id. Meanwhile, the system is  
>>> holding on to the old id so it can eventually flush its I/O to disk.
>>>
>>> Is there any way I can tell the system that the usb drive I'm  
>>> plugging in is the same one it needs to flush the data to? Or is  
>>> that data just lost forever at this point?
>> At this point, you may be hosed. I'm not sure that specifying
>> mount points by volume id would help in future, but it might.
>>  mount -L label  or
>>  mount -U UUID
>
> The drive originally got recognized as /dev/sdb, and mounted with  
> its label as /media/OneTouch. After the power outage, VMware had  
> unwritten I/O waiting for the drive, and the drive instead got  
> loaded as /dev/sdc and mounted as /media/OneTouch1.
>
> By the time I'm able to mount the drive, it's already past the  
> point where it's decided the drive is /dev/sdc and not /dev/sdb. I  
> was hoping there was some way to make it recognize that the drive  
> is the same /dev/sdb it's waiting for, when I power up the drive.

Are you plugging it in to the exact same USB port as before? I think  
that might have an effect.