Re: [Qemu-devel] [PATCH] scsi: reset cdrom tray statuses on scsi_disk_reset

[Pavel Hrdina]

On 17.5.2013 14:02, Paolo Bonzini wrote:
> Il 17/05/2013 13:57, Pavel Hrdina ha scritto:
> > > What happens when you suspend the QEMU machine to RAM?  I believe the
> > > tray should remain open or, if closed, should remain locked.  Can you
> > > try the same test on bare-metal (hint: boot to emergency mode to bypass
> > > anything that udev can do with locking the tray, then use sg_prevent to
> > > toggle the state).
> >
> > I've booted to init 1, then ejected the CD-ROM tray and run the
> > pm-suspend. The computer has suspended successfully. And again
> > immediately after the computer is turned on before the screen is turned
> > on the CD-ROM tray is closed.
>
> Ok, these are good signs. :)
>
> > I don't have SCSI CD-ROM device to use the sg_prevent.
>
> All CD-ROMs ultimately speak SCSI (via ATAPI).  You don't have /dev/sr0?
>
> Paolo

Yes I have. If I run "sg_prevent /dev/sr0" the CD-ROM tray could be 
still opened. Even with "sg_prevent -p 3 /dev/sr0".

Pavel