[FC5] Unable to blank CD-RW

[Antonio Montagnani]

2006/9/8, Antonio Montagnani <antonio.montagnani at gmail.com>:
> Suddenly I am not able to blank any CD-RW with KB3.
> I get the following report:
>
> System
> -----------------------
> K3b Version: 0.12.15
>
> KDE Version: 3.5.4-0.1.fc5 Fedora-Core
> QT Version:  3.3.6
> Kernel:      2.6.17-1.2174_FC5
> Devices
> -----------------------
> QSI CDRW/DVD SBW242U UU30 (/dev/hdc, ) at  [CD-R; CD-RW; CD-ROM;
> DVD-ROM] [DVD-ROM; CD-ROM; CD-R; CD-RW] [SAO; TAO; RAW; SAO/R96P;
> SAO/R96R; RAW/R16; RAW/R96P; RAW/R96R]
>
> Used versions
> -----------------------
> cdrecord: 2.1.1a03
>
> cdrecord command:
> -----------------------
> /usr/bin/cdrecord -v gracetime=2 dev=/dev/hdc speed=24 -tao
> driveropts=burnfree -eject blank=fast -force
>
> cdrecord
> -----------------------
> /usr/bin/cdrecord: Cannot allocate memory. WARNING: Cannot do mlockall(2).
>
> /usr/bin/cdrecord: WARNING: This causes a high risk for buffer underruns.
> /usr/bin/cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
> /usr/bin/cdrecord: Permission denied. WARNING: Cannot set priority
> using setpriority().
> /usr/bin/cdrecord: WARNING: This causes a high risk for buffer underruns.
> scsidev: '/dev/hdc'
> devname: '/dev/hdc'
> scsibus: -2 target: -2 lun: -2
> Error trying to open /dev/hdc exclusively ... retrying in 1 second.
> Error trying to open /dev/hdc exclusively ... retrying in 1 second.
> Error trying to open /dev/hdc exclusively ... retrying in 1 second.
> Error trying to open /dev/hdc exclusively ... retrying in 1 second.
> Error trying to open /dev/hdc exclusively ... retrying in 1 second.
> Error trying to open /dev/hdc exclusively ... retrying in 1 second.
> Error trying to open /dev/hdc exclusively ... retrying in 1 second.
> Error trying to open /dev/hdc exclusively ... retrying in 1 second.
> Error trying to open /dev/hdc exclusively ... retrying in 1 second.
> Error trying to open /dev/hdc exclusively ... retrying in 1 second.
> /usr/bin/cdrecord: Device or resource busy. Cannot open '/dev/hdc'.
> Cannot open SCSI driver.
> /usr/bin/cdrecord: For possible targets try 'cdrecord -scanbus'. Make
> sure you are root.
> /usr/bin/cdrecord: For possible transport specifiers try 'cdrecord dev=help'.
> Cdrecord-Clone 2.01.01a03-dvd (i686-pc-linux-gnu) Copyright (C)
> 1995-2005 Jörg Schilling
> NOTE: This version contains the OSS DVD extensions for cdrtools and thus may
>       have bugs related to DVD issues that are not present in the original
>       cdrtools. Please send bug reports or support requests to
>       http://bugzilla.redhat.com/bugzilla The original cdrtools author should
>       not be bothered with problems in this version.
> TOC Type: 1 = CD-ROM
>
> What shall I do??
>
> --
> Antonio Montagnani
> Skype : antoniomontag
>

one more information:

if I issue the command:

umount /dev/cdrw (only by root, no way by the user) the CD-RW is blanked.
What is happening????
-- 
Antonio Montagnani
Skype : antoniomontag