[optical drive auto-load] [patch request] Add debugging messages to optical drive auto-loadtray.

[Mike Mestnik <cheako@mikemestnik.net>]

Hello,
  There is an application hammering the first optical drive and I'd like
to discover it's pid and perhaps the name of it's executable.  The
application triggers the drive's auto-loadtray and causes this lovely
feature to become unusable. :(

https://bugs.launchpad.net/linux/+bug/283316/comments/181

I'd like a patch that I could use for testing that would indicate the
application(by pid or path) that causes any of the drives
auto-load/eject features.  These events should be rare enough on every
system to always be logged at an information level.

Please CC me in responses.

On a related note the drives I have require a delay(about 7 seconds)
from the time the tray is indicated as loaded to when the drive is ready
to process read requests.  This causes mount to fail, I've used 'eject
-t $drv; sleep 7; mount $drv;' to counteract this.

The drive is Brand: LG Type: BlueRay Name: Super Multi Blue Model: CH08

arcadia:~# hdparm -i /dev/sr0

/dev/sr0:

 Model=HL-DT-ST BDDVDRW CH08LS10, FwRev=2.00, SerialNo=H94993B4515
 Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
 RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
 BuffType=unknown, BuffSize=unknown, MaxMultSect=0
 (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio3 pio4
 DMA modes:  mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
 AdvancedPM=no
 Drive conforms to: Unspecified:  ATA/ATAPI-4,5,6,7

 * signifies the current active mode