[PATCH 0/1] LP#397734 -- disable cdrom tray lock

Colin Ian King colin.king at canonical.com
Thu Mar 11 15:38:23 UTC 2010

On Thu, 2010-03-11 at 15:01 +0000, Andy Whitcroft wrote:
> There has been much discussion on what the correct behaviour is when
> hitting the CDROM eject button.  Although this button is intended to only
> allow eject when the media is not busy, the common use cases effectivly
> render this button inoperative as the media is always busy.  Userspace has
> been modified to turn off the lock for mounted filesystems based on the
> assumption that read-only filesystems cannot be dammaged by loss, cirtinly
> less so that the effects of ripping out a live USB based filesystem.
> The above modification cannot help with media players which directly
> open /dev/sr0 and access the raw stream.  This means that behavour is
> now inconsistant depending on what you use the disk for.  For filesystem
> mounts eject will pop the drive, for music etc it will not.
> We have been requested to default tray locking off to ensure that the
> locking is off consistantly, and that we get a consistant behaviour.
> This means that the disk _will_ eject on command, in use or not.
> Userspace will be modified to track the loss of the media and unmount it
> automatically.  Media players will presumably error and stop.  Work will
> also be done to fix disk burning software to ensure they explicitly lock
> the tray to prevent loss of data.
> For Lucid.
> -apw
> Andy Whitcroft (1):
>   UBUNTU: SAUCE: cdrom -- default to not locking the tray when in use
>  drivers/cdrom/cdrom.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
I'm happy with this - and it's a pain otherwise.

Acked-by: Colin King <colin.king at canonical.com>

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