burncd/atapi multisession CD issues

[Søren Schmidt]

On 07/10/2005, at 1:40, Anish Mistry wrote:

>     I've got a couple of issues, which both appear on RELENG_6 and
> -CURRENT as of today.  I'm not sure when they started as I mostly
> burncd multisession backups on my 4.x system.
>     Once I burn a CD with burncd:
> mkisofs -r -J -o test.iso files
> burncd -f /dev/acd0 -s max -m data test.iso fixate
> The files burn just fine, but I have to eject and then close the
> drive. eg. "cdcontrol eject ;  cdcontrol close" before I can mount
> the CD.  If I try to mount the CD without the eject/close I get the
> following message in the syslog:
> kernel: g_vfs_done():acd0[READ(offset=32768, length=2048)]error = 5
>   The same goes (eject/close except no error message) before grabbing
> the multisession info with "burncd -f /dev/acd0 msinfo".
> When I try to burn another session with burncd I just get
> "Input/Output error" and the second session doesn't get added to the
> CD.
> This all seems like a problem with ata/atapi rather than burncd.

Well, its rather a feature of your particular burner (which then join  
the club of many others).
Some burner SW actually does an eject/close dance now and then to get  
around it :)

Søren Schmidt
sos at FreeBSD.org