Bug 225349 - /dev/cdrom is sometimes mapped to /dev/hdc some other times to /dev/hdd
/dev/cdrom is sometimes mapped to /dev/hdc some other times to /dev/hdd
Product: Fedora
Classification: Fedora
Component: udev (Show other bugs)
athlon Linux
medium Severity low
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Assigned To: Harald Hoyer
Depends On:
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Reported: 2007-01-29 19:15 EST by Krzysztof Dubowik
Modified: 2007-11-30 17:11 EST (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2007-08-24 06:28:18 EDT
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Description Krzysztof Dubowik 2007-01-29 19:15:05 EST
Description of problem:
Sylink /dev/cdrom changes randomly after system restarts. Sometimes it points to
/dev/hdc, sometimes to /dev/hdd. My /dev/hdc is a DVDROM, /dev/hdd is a DVDRW.
Here's a fragent of dmesg output

Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller at PCI slot 0000:00:0f.1
ACPI: PCI Interrupt Link [ALKA] BIOS reported IRQ 0, using IRQ 20
ACPI: PCI Interrupt Link [ALKA] enabled at IRQ 20
ACPI: PCI Interrupt 0000:00:0f.1[A] -> Link [ALKA] -> GSI 20 (level, low) -> IRQ 16
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt8237 (rev 00) IDE UDMA133 controller on pci0000:00:0f.1
    ide0: BM-DMA at 0xa800-0xa807, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0xa808-0xa80f, BIOS settings: hdc:DMA, hdd:DMA
Probing IDE interface ide0...
hda: ST330621A, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: _NEC DV-5800A, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: 58633344 sectors (30020 MB) w/512KiB Cache, CHS=58168/16/63, UDMA(100)
hda: cache flushes not supported
 hda: hda1 hda2 hda3 < hda5 hda6 hda7 >

Version-Release number of selected component (if applicable):

How reproducible:
randomly, but often (link changes every 2-3 reboots)

Steps to Reproduce:
1. Reboot system
2. ls -l /dev/cdrom
Actual results:
The symlink changes from /dev/hdc to /dev/hdd and back across reboots

Expected results:
The symlink always points to /dev/hdc
Comment 1 Krzysztof Dubowik 2007-01-29 19:17:36 EST
[kite@eagle ~]$ cat /proc/sys/dev/cdrom/info
CD-ROM information, Id: cdrom.c 3.20 2003/12/17

drive name:             hdd     hdc
drive speed:            8       20
drive # of slots:       1       1
Can close tray:         1       1
Can open tray:          1       1
Can lock tray:          1       1
Can change speed:       1       1
Can select disk:        0       0
Can read multisession:  1       1
Can read MCN:           1       1
Reports media changed:  1       1
Can play audio:         1       1
Can write CD-R:         1       0
Can write CD-RW:        1       0
Can read DVD:           1       1
Can write DVD-R:        1       0
Can write DVD-RAM:      0       0
Can read MRW:           1       1
Can write MRW:          1       1
Can write RAM:          1       0
Comment 2 Harald Hoyer 2007-08-24 06:28:18 EDT
fixed with F-8

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