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Date: Sat, 31 Aug 2013 17:42:28 +0400
From: Slawa Olhovchenkov <slw@zxy.spb.ru>
To: Thomas Laus <lausts@acm.org>
Subject: Re: Lost CAM Access to DVD Writer
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Cc: freebsd-stable@freebsd.org, "Kenneth D. Merry" <ken@freebsd.org>
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On Sat, Aug 31, 2013 at 09:00:09AM -0400, Thomas Laus wrote:

> > You probably need to recompile whatever application you're using to burn
> > CDs.
> >
> The actual program, cdrecord, works when invoked from the command line.  The 
> following script does not:
> 
> EXAMPLES
>      Dumps the /u file system to DVDs using growisofs.  Uses a 16MB cache,
>      creates a snapshot of the dump, and records the dumpdates file.
> 
> /sbin/dump -0u  -L -C16 -B4589840 -P 'growisofs -Z /dev/cd0=/dev/fd/0' /u
> 
> I wonder if the recent change to devfs might be the root cause of my problem. 
> I have been dumping to DVD for years without any issues until now.  Maybe the 
> re-direction to /dev/fd/0 requires a different syntax.

Are you sure mount fdescfs? /dev/fd is fdescfs, not devfs.