Red Hat Bugzilla – Bug 62329
ide-cdrom and ide-scsi conflict?
Last modified: 2014-03-16 22:26:33 EDT
Description of Problem: kudzu not fully setting up hardware with IDE CDRW on system? I just got my new machine at LANL (A Dell Precision 530.. real nice), and installed Beta 3 onto it. During the install it noticed that my machine has an writable IDE cdrom in it and if I wanted the additional flag hdc=ide-scsi. I agreed to that, and it seems to have made the link for /dev/cdrom to /dev/scd0 It however did not seem to add anything to /etc/modules.conf or to the /etc/grub.conf file. an lsmod shows... sr_mod 16056 0 (autoclean) i810_audio 26912 0 (autoclean) ac97_codec 9888 0 (autoclean) [i810_audio] soundcore 5444 2 (autoclean) [i810_audio] radeon 96888 2 agpgart 34848 3 autofs 13156 0 (autoclean) (unused) 3c59x 28072 1 ipchains 44012 28 ide-scsi 8832 0 ide-cd 27712 0 cdrom 28288 0 [sr_mod ide-cd] usb-uhci 26276 0 (unused) usbcore 58496 1 [usb-uhci] ext3 70816 4 jbd 50112 4 [ext3] raid1 18756 4 raid0 3968 1 aic7xxx 137760 10 sd_mod 11776 20 scsi_mod 110612 4 [sr_mod ide-scsi aic7xxx sd_mod] I can play cd's in the system, but when I run cdparanoia I get the following: cdparanoia III release 9.8 (March 23, 2001) (C) 2001 Monty and Xiphophorus Report bugs to paranoia@xiph.org http://www.xiph.org/paranoia/ Checking /dev/cdrom for cdrom... Testing /dev/cdrom for cooked ioctl() interface /dev/scd0 is not a cooked ioctl CDROM. Testing /dev/cdrom for SCSI interface No generic SCSI device found to match CDROM device /dev/scd0 Version-Release number of selected component (if applicable): System info: AIC7xxx SCSI controller root:{proc}# cat scsi/scsi Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: FUJITSU Model: MAN3184MP Rev: 5507 Type: Direct-Access ANSI SCSI revision: 03 Host: scsi0 Channel: 00 Id: 01 Lun: 00 Vendor: FUJITSU Model: MAN3184MP Rev: 5507 Type: Direct-Access ANSI SCSI revision: 03 Host: scsi1 Channel: 00 Id: 00 Lun: 00 Vendor: LITE-ON Model: LTR-24102M Rev: 4DS3 Type: CD-ROM ANSI SCSI revision: 02 The cdrom is being seen: Looking at /dev/hd[abcd] and /dev/scd0 smoogen:{smoogen}$ ls -l /dev/hd[abcd] /dev/scd0 brw-rw---- 1 root disk 3, 0 Feb 21 12:26 /dev/hda brw-rw---- 1 root disk 3, 64 Feb 21 12:26 /dev/hdb brw-rw---- 1 root disk 22, 0 Feb 21 12:26 /dev/hdc brw-rw---- 1 root disk 22, 64 Feb 21 12:26 /dev/hdd brw------- 1 smoogen disk 11, 0 Feb 21 12:26 /dev/scd0 Is it something I am doing wrong?
Ok it is definately a permission problem of some sort: I can do this as root, but cannot as user smoogen. I have tried the following to see if it would clear it up: change /etc/modules.conf options ide-cd ignore=hdc # tell the ide-cd module to ignore hdc alias scd0 sr_mod # load sr_mod upon access of scd0 pre-install sg modprobe ide-scsi # before sg, load ide-scsi pre-install sr_mod modprobe ide-scsi # before sr_mod, load ide-scsi and rmmod ide-cdrom None of these changes affected the problem. I have removed them, and am looking for something very obvious that I am missing.
The fix is to make the scsi generic device associated with the cdrom also readable by the user. I did this via a ln -s /dev/sg2 /dev/cdrom1 but I can understand if this would be a tricky kudzu issue.. as kudzu would need to see if there are any ide-scsi devices and then work out which one was the cdrom and what its generic device should be.
At this point, I am going to say this is a feature enhancement request for kudzu someday in the far future. The bug should probably be closed or changed by RH engineers.
Done in 0.99.91-1 as part of updfstab.