Lost CAM Access to DVD Writer

[Slawa Olhovchenkov]

On Sat, Aug 31, 2013 at 05:43:54PM +0400, Dmitry Morozovsky wrote:

> On Sat, 31 Aug 2013, Slawa Olhovchenkov 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.
> 
> Are you sure? At least, std* are there even if fdescfs is absent:
> 
> marck at castor:/FreeBSD/rinet/src.9/sys> kldstat -v | grep fdesc
> marck at castor:/FreeBSD/rinet/src.9/sys> ls /dev/fd
> 0  1  2

> ls /dev/fd/
0       1       2       3       4

Hmm, w/o fdescfs only std*. With fdescfs more.