Re: [Qemu-devel] [PATCH 1/3] scsi-disk: close drive on START_STOP

[Paolo Bonzini]

Il 05/12/2013 13:42, Alexey Kardashevskiy ha scritto:
> Thanks!
> 
> Just out of curiosity. A lot (in fact, all around me) dvd drives do not
> support trayclose as they are in laptops or servers (which use the same
> laptop models). I cannot even verify how this "eject -t" exactly works - no
> hardware around me. And even if I could find it, I could easily take the
> disc off the tray in that short period of time between tray is open and
> tray is closed but we still absolutely want "eject" + "eject -t" to work as
> you described.

Taking the disc off the tray is equivalent to going to the monitor and
doing "eject -f cd".

I.e. programmatic actions leave the disc in (at least if you do not
consider laptops and servers; but the guest can detect whether the tray
can be auto-closed, and we tell it that it can).  Out-of-band user
actions force the disc out.

> Why exactly? :) Only because change of behavior is bad? Just asking. Thanks.

The only practical use of CDs is installation, and it took a looooong
time to get it to work with all sorts of guests.

Paolo