Re: [FEATURE REQUEST] Transparent hot plugging of root file system on portable storage devices.

[Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>]

On Wed, 2 Jan 2008, Oliver Neukum wrote:

> Am Dienstag 01 Januar 2008 schrieb Pavel Machek:
> > Hi1
> > 
> > > I would like to request a feature in the Linux kernel that would allow
> > > a user to unplug a live read-only root file system which exists on a
> > > detachable storage device such as a USB key drive. The desired
> > > behavior is that once the same device is reattached to the computer
> > > the user can continue work transparently without having to reboot.
> > > 
> > > Having such a feature is becoming more important with advances in
> > > detachable solid state drive technology.
> > 
> > Yep, that would be nice.... In fact, patch would be very welcome :-).
> 
> Use the USB persist feature and hibernate. It should work. If you modify
> the fs in any way, you'll crash and burn. Unmounting / is harder which you
> need if you want to do this safely.

What about people who prefer (for reasons of restart latency or
non-availability of swap space) to suspend rather than hibernate?

Alan Stern


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