[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: cdrecord problem
Fell into my own trap. Didn't read the entire e-mail...
When I burn using pipe, I up the fs argument, using fs=31999k which is the max my version supports. I also use -waiti, which waits until the input buffer is full before starting the write.
Cheers,
Rob
On Fri, 5 Sep 2003 10:48:24 -0600
Chris Albertson <chrisalbertson90278@yahoo.com> wrote:
>
> At first I thought mkisofs might be screwing up.
> but you say the error rate depends on the recording
> speed. I suspect now that mkiosfs is not feeding
> cdrecord fast enough. Assuming you have 800MB of free
> space you could try this:
>
> mkisofs -R -o /foobar/tempfile disk1
> cdrecord -v fs=6m speed=12 dev=3,0 -" /foobar/tempfile
> rm /foobar/tempfile.
>
> xcdroast may be able to work at 12x or faster because
> it maintains a large buffer between mkisofs and
> cdrecord and lets mkisofs get a good head start before
> staring cdrecord. You are using a direct pipe. and it
> looks to me like there is a bottle neck in the system.
>
> Is this an IDE CD-R device and hard disk? If so that
> could explain it. IDE device take a huge amount of
> CPU cycles to drive.
>
> --- Thomas Droege <tdroege2@earthlink.net> wrote:
> > I am writing backup disks with the following (in
> > perl):
> >
> > system "mkisofs -R disk1 | cdrecord -v fs=6m
> > speed=12 dev=3,0 -";
> >
> > I just copied this line from the man pages and
> > figures out what the dev
> > should be.
> >
> > The CD recorder is a 32x device for write. the sub
> > directory disk1
> > contains 80 ea. 8 megabyte images. The CDs I am
> > using are rated at 24x.
> >
> > About once a directory write, one of the files gets
> > written as a directory.
> > It is then unreadable. At least for me and the
> > utilities that I have
> > tried. The buffer never gets below 97%. Sometimes
> > it writes garbage as the
> > CD directory. An ls gets garbage that I can
> > recognize as part of a fits
> > header. I have tried recording at different speeds.
> > 24x gets mostly
> > garbage. 12x gets about 1 file per 80 file block as
> > a directory. All but
> > the file shown as a directory are readable by Gimp.
> > The computer is a 1.5
> > Ghz dual processor Athelon.
> >
> > I recall seeing this problem using xcdroast in the
> > previous Mandrake 8.1.
> > I am now using 9.0.
> >
> > I seem to be able to record perfectly every time
> > from the same directory
> > "on the fly" using xcdroast at 24x (the CDs are
> > rated at 24x).
> >
> > Has anyone seen this problem and can recommend what
> > I should do?
> >
> > Tom Droege
> >
> >
> >
> >
> >
> >
>
>
> =====
> Chris Albertson
> Home: 310-376-1029 chrisalbertson90278@yahoo.com
> Cell: 310-990-7550
> Office: 310-336-5189 Christopher.J.Albertson@aero.org
> KG6OMK
>
> __________________________________
> Do you Yahoo!?
> Yahoo! SiteBuilder - Free, easy-to-use web site design software
> http://sitebuilder.yahoo.com