15.06.2020 18:10, Miroslav Lachman wrote:
> I am running FreeBSD 11.3. Whenever I inserted some 20 year old CD (backups
on CD-R) which is currently unreadable the system is trying to read the CD even
after I want to eject it by button in the CD drive or "eject" command.
>
> These messages are repeatedly logged in messages
>
> Jun 15 13:05:28 illbsd kernel: (cd0:ahcich2:0:0:0): Error 6, Unretryable
error
> Jun 15 13:05:28 illbsd kernel: (cd0:ahcich2:0:0:0): cddone: got error 0x6
back
> Jun 15 13:05:28 illbsd kernel: (cd0:ahcich2:0:0:0): READ(10). CDB: 28 00 00
00 00 00 00 00 11 00
> Jun 15 13:05:28 illbsd kernel: (cd0:ahcich2:0:0:0): CAM status: SCSI Status
Error
> Jun 15 13:05:28 illbsd kernel: (cd0:ahcich2:0:0:0): SCSI status: Check
Condition
> Jun 15 13:05:28 illbsd kernel: (cd0:ahcich2:0:0:0): SCSI sense: NOT READY
asc:3a,2 (Medium not present - tray open)
>
> It can take from 1 to 5 minutes from pressing eject to actually open the
drive.
>
> Is there something I can do to not wait too long for this? Any tuneables or
command to interrupt endless reading?
Perhaps it's GEOM doing multiple "taste" attempts to detetmine
logical format of the media.
Try setting "sysctl kern.geom.notaste=1" temporary.