Bug 138733

Summary:	Can't blank CD-RW
Product:	[Fedora] Fedora	Reporter:	Sven Neuhaus <sven-redhat>
Component:	cdrtools	Assignee:	Harald Hoyer <harald>
Status:	CLOSED CANTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	3
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2005-09-16 13:58:23 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Sven Neuhaus 2004-11-10 21:49:58 UTC

I try to blank a CD-RW:

# cdrecord -v blank=fast
Cdrecord-Clone 2.01-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2004
JÃ¶rg Schilling
Note: This version is an unofficial (modified) version with DVD support
Note: and therefore may have bugs that are not present in the original.
Note: Please send bug reports or support requests to
http://bugzilla.redhat.com/bugzilla
Note: The author of cdrecord should not be bothered with problems in
this version.
TOC Type: 1 = CD-ROM
scsidev: '/dev/cdrom'
devname: '/dev/cdrom'
scsibus: -2 target: -2 lun: -2
Error trying to open /dev/cdrom exclusively ... retrying in 1 second.
Error trying to open /dev/cdrom exclusively ... retrying in 1 second.
Error trying to open /dev/cdrom exclusively ... retrying in 1 second.
Error trying to open /dev/cdrom exclusively ... retrying in 1 second.
Error trying to open /dev/cdrom exclusively ... retrying in 1 second.
Error trying to open /dev/cdrom exclusively ... retrying in 1 second.
Error trying to open /dev/cdrom exclusively ... retrying in 1 second.
Error trying to open /dev/cdrom exclusively ... retrying in 1 second.
Error trying to open /dev/cdrom exclusively ... retrying in 1 second.
Error trying to open /dev/cdrom exclusively ... retrying in 1 second.
cdrecord: Device or resource busy. Cannot open '/dev/cdrom'. Cannot
open SCSI driver.
cdrecord: For possible targets try 'cdrecord -scanbus'.
cdrecord: For possible transport specifiers try 'cdrecord dev=help'.

# ls -lL /dev/cdrom
brw-rw---- 1 root disk 22, 0 10. Nov 21:37 /dev/cdrom

# ls -l /usr/bin/cdrecord
-rws--x--- 1 root users 323936 18. Okt 15:56 /usr/bin/cdrecord

# cdrecord -scanbus
Cdrecord-Clone 2.01-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2004
JÃ¶rg Schilling
Note: This version is an unofficial (modified) version with DVD support
Note: and therefore may have bugs that are not present in the original.
Note: Please send bug reports or support requests to
http://bugzilla.redhat.com/bugzilla
Note: The author of cdrecord should not be bothered with problems in
this version.
Linux sg driver version: 3.5.27
Using libscg version 'schily-0.8'.
cdrecord: Warning: using inofficial libscg transport code version
(schily - Red Hat-scsi-linux-sg.c-1.83-RH '@(#)scsi-linux-sg.c 1.83
04/05/20 Copyright 1997 J. Schilling').
scsibus0:
0,0,0 0) 'ØT@ß¥9@' 'xcï¿½>ï¿½ï¿½ï¿½2ï¿½ï¿½ï¿½ï¿½' 'ï¿½Hï¿½ Removable vendor
specific 4 WORM
0,1,0 1) *
0,2,0 2) *
0,3,0 3) *
0,4,0 4) *
0,5,0 5) *
0,6,0 6) *
0,7,0 7) *

# cdrecord dev=help
Cdrecord-Clone 2.01-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2004
JÃ¶rg Schilling
Note: This version is an unofficial (modified) version with DVD support
Note: and therefore may have bugs that are not present in the original.
Note: Please send bug reports or support requests to
http://bugzilla.redhat.com/bugzilla
Note: The author of cdrecord should not be bothered with problems in
this version.
Supported SCSI transports for this platform:

Transport name: sg
Transport descr.: Generic transport independent SCSI
Transp. layer ind.:
Target specifier: bus,target,lun
Target example: 1,2,0
SCSI Bus scanning: supported
Open via UNIX device: not supported

Transport name: pg
Transport descr.: SCSI transport for ATAPI over Parallel Port
Transp. layer ind.:
Target specifier: bus,target,lun
Target example: 1,2,0
SCSI Bus scanning: supported
Open via UNIX device: not supported

Transport name: ATA
Transport descr.: ATA Packet specific SCSI transport
Transp. layer ind.: ATAPI:
Target specifier: bus,target,lun
Target example: ATAPI:1,2,0
SCSI Bus scanning: supported
Open via UNIX device: not supported

Transport name: ATA
Transport descr.: ATA Packet specific SCSI transport using sg
interface
Transp. layer ind.: ATA:
Target specifier: bus,target,lun
Target example: 1,2,0
SCSI Bus scanning: supported
Open via UNIX device: not supported

Transport name: RSCSI
Transport descr.: Remote SCSI
Transp. layer ind.: REMOTE:
Target specifier: rscsi@host:bus,target,lun
Target example: REMOTE:rscsi@host:1,2,0
SCSI Bus scanning: supported
Open via UNIX device: not supported

The PC has a NEC IDE DVD burner (1100A).

cdrecord RPM version is 2.01.1-5
kernel RPM version is 2.6.9-1.667

It worked in Fedora Core 2 with Kernel 2.6.7.x

Comment 1 Sven Neuhaus 2004-11-10 21:51:34 UTC

OK, I noticed the CD showed up on the desktop.
I tried to eject it and got an error message that was cut off.
The icon disappeared from the desktop.

I can blank the CD-RW now!

Comment 2 Sven Neuhaus 2004-11-10 21:55:49 UTC

OK, i noticed that k3b no longer shows the DVD burner device after I
changed the owner of /dev/hdc (which /dev/cdrom points to) to
root.disk so I changed them back to my user.
k3b shows the DVD burner again. However, burning fails (no clear error
message, sorry!)

Starting k3b as root lets me burn CDs.

Comment 3 Teppo Turtiainen 2004-11-21 13:38:04 UTC

I have the same problem but it works if I don't close the cd tray
before issuing the command and I let cdrecord close it. I have a NEC
ND3500 drive.

Comment 4 Sitsofe Wheeler 2004-12-02 10:35:15 UTC

The issue mentioned in comment #0 is because the cd had been mounted (probably
by hald). Doing umount /dev/hdc before using cdrecord will probably help (or use
a GUI tool like k3b that quitely tries to unmount discs before blanking them).

It's hard to say whether this is really a bug...

Comment 5 Harald Hoyer 2004-12-07 17:00:14 UTC

for the permissions try to update udev

There is also a kernel bug for scsi cdrom devices:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=134822

Comment 6 Harald Hoyer 2005-09-16 13:58:23 UTC

CANTFIX without more information, closed due to inactivity.

Comment 7 Sven Neuhaus 2005-09-16 14:14:03 UTC

I haven't had any problems in the last few months (with FC4).