Re: removable media revalidation - udev vs. devfs or static /dev

Jens Axboe
2004-01-03T17:54:28Z

On Sat, Jan 03 2004, Andrey Borzenkov wrote:
> > Is there really no way to get a media change notification from ZIP or
> > JAZ drives?
>
> If anyone knows please tell me - I will put it into supermount ...
>
> AFAIK in case of SCSI this is impossible simply by virtue of protocol - SCSI
> device is not initiator. So you need something to poll device for status.
> That is usually done on device open except in this case you can't open
> because you do not yet have handle.

You could queue a media notification request for long periods of time,
being completed by the drive when a media change happens. At least mmc
allows for this, doubt anyone has ever done it.

So yeah, poll...

--
Jens Axboe