Re: IDE todo list

Jens Axboe
2003-03-23T14:02:31Z

On Sun, Mar 23 2003, Alan Cox wrote:
> On Sun, 2003-03-23 at 10:49, Jens Axboe wrote:
> > On Sat, Mar 22 2003, Alan Cox wrote:
> > > - Finish verifying 256 sector I/O or larger on LBA48
> > > [How to handle change dynamically on hotplug ?]
> >
> > That is basically impossible. How are you going to handle the case where
> > you have a queue full of 256 request writes, and the plugged in disk
> > chokes on them? And insolvable unless you start setting aside requests
> > simply for this purpose. Also breaks the pseudo atomic segments that a
> > single request represents. This is just way beyond ugly...
>
> I don't think its impossible at all. Remember if you hotplug a drive you
> *dont* want the pending I/O to hit the new drive!

In that case it could be done, the key point is that no resizing needs
to be done. The rest is purely driver implementation :)

--
Jens Axboe