umass panic

Joerg Sonnenberger joerg at
Mon Jul 18 08:25:55 PDT 2005

On Sun, Jul 17, 2005 at 01:12:17PM +0200, Simon 'corecode' Schubert wrote:
> Jeroen Ruigrok/asmodai wrote:
> >>  I wouldn't expect good things to happen detaching a drive without
> >>  unmounting it first.
> >People are used to pulling out flash storage (compact flash, memory sticks
> >and the like) without the system going down.  Especially if no changes have
> >been made to the filesystem.
> >Things like this need to be handled transparent and gracefully, not
> >panicing.  (This has always been my one of biggest gripes about Unix.)
> yea, despite that it's not particularly nice to the operating system to 
> remove devices without telling so first, we have to face this situation. 
> I'd even prefer that non-flushed data will be kept (or transferred to a 
> userland tool), so that if you notice "uh, I didn't umount!" and insert 
> it back, the data can be flushed out...

The problem with this is that USB device don't have UUIDs, unlike
Firewire. So you can't reliable detect that it is the same device, it
might be another USB stick of the same brand afterall.


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