Re: cdrecord and "get performance" scsi errors

["Giulio Orsero" <giulioo@gmail.com>]

On 5/15/07, Thomas Schmitt <scdbackup@gmx.net> wrote:
> I would next try wether growisofs is able to burn with
> speeds 2.4 and 4.0.

growisofs 6.1 will error out with:
# growisofs -Z /dev/scd1=test.iso
WARNING: /dev/scd1 already carries isofs!
About to execute 'builtin_dd if=test.iso of=/dev/scd1 obs=32k seek=0'
:-( write failed: Invalid argument


So I used an old version (5.21.4.10.8, whose mediainfo output is the
same of 6.1):

# growisofs.test  -Z /dev/scd1=test.iso
Executing 'builtin_dd if=test.iso of=/dev/scd1 obs=32k seek=0'
/dev/scd1: "Current Write Speed" is 4.1x1385KBps.
builtin_dd: 2672*2KB out @ average 1.0x1385KBps
/dev/scd1: flushing cache
/dev/scd1: stopping de-icing
/dev/scd1: writing lead-out
# growisofs.test -speed=4 -Z /dev/scd1=test.iso
Executing 'builtin_dd if=test.iso of=/dev/scd1 obs=32k seek=0'
/dev/scd1: "Current Write Speed" is 4.1x1385KBps.
builtin_dd: 2672*2KB out @ average 1.0x1385KBps
/dev/scd1: flushing cache
/dev/scd1: stopping de-icing
/dev/scd1: writing lead-out
# growisofs.test -speed=2.4 -Z /dev/scd1=test.iso
Executing 'builtin_dd if=test.iso of=/dev/scd1 obs=32k seek=0'
/dev/scd1: "Current Write Speed" is 2.5x1385KBps.
builtin_dd: 2672*2KB out @ average 0.6x1385KBps
/dev/scd1: flushing cache
/dev/scd1: stopping de-icing
/dev/scd1: writing lead-out


cdrecord seems to write correctly too, problem is those errors would
render quite difficult to understand if we are experiencing real
problems or just false positives.


--
giulioo@pobox.com