misc/68458: Burning DVD causes lots of FAILURE - READ_SUBCHANNEL ILLEGAL REQUEST errors

[Steve Wills]

>Number:         68458
>Category:       misc
>Synopsis:       Burning DVD causes lots of FAILURE - READ_SUBCHANNEL ILLEGAL REQUEST errors
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Jun 28 23:00:26 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     Steve Wills
>Release:        5.2-CURRENT
>Organization:
>Environment:
FreeBSD thx1138.example.com 5.2-CURRENT FreeBSD 5.2-CURRENT #3: Sat Jun 19 01:11:20 UTC 2004     steve at thx1138.example.com:/usr/obj/usr/src/sys/THX1138  i386

>Description:
      Trying to burn a DVD of a precompiled ISO image. I run growisofs like this:

growisofs -dvd-compat -Z /dev/cd0=filename.iso

Burn goes very slowly (on order of 12 hours) and during the entire burn, I get these messages in /var/log/messages:

Jun 28 18:36:11 thx1138 kernel: acd0: FAILURE - READ_SUBCHANNEL ILLEGAL REQUEST asc=0x30 ascq=0x02 error=4<ABORTED>

Burn appears to complete properly, but disc doesn't seem to work. 
>How-To-Repeat:
      See Above
>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted: