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

[Jens Axboe]

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

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