Can't mount a CDRW under ide-cd
From: Timothy E. Jedlicka - wrk
Date: Fri May 07 2004 - 00:57:06 EST
Jens or any other expert,
Thank you for supporting/maintaining the CD modules.
I'm sorry if this is the wrong place for debugging help. I've tried several
other lists and everyone just keeps telling me to use ide-scsi.
Basic problem, I can't mount CDs on my cdRW. They mount just fine on my cdROM
(but not my CDRW). I get:
mount: No medium found
I'm running 2.6.5, Debian, PDC20276: IDE controller.
When I try to burn CDs (using cdrecord with -dev /dev/hdf) it appears to burn -
the laser comes on - i.e. I can communicate with the CD.
I hacked ide-cd.c and stuck a few printk's in to prove that when I try to
mount the CDRW I am hitting ide-cd (cdrom_prepare_request and ide_startstop_t)
Any hints of how to debug this further? Is it possibly an incompatibility with
my model of CDRW? strace didn't get me anywhere. Adding my breakpoints helped
at least prove that I'm hitting ide-cd, but I don't know what function
interacts with mount and finding a medium.
I am a tester by profession - not a coder. I can test (and break)
anything you throw at me, but I get lost when it comes to coding. Thanks for
your help. Some more info on my config is attached.
-----
Timothy Jedlicka, bonzo@xxxxxxxxxx, 1-630-713-4436, AOL-IM=bonzowork
Network Entomologist, Lucent Technologies, Testers For Hire
PDC20276: IDE controller at PCI slot 0000:00:06.0
ide2: BM-DMA at 0xb000-0xb007, BIOS settings: hde:pio, hdf:pio
ide3: BM-DMA at 0xb008-0xb00f, BIOS settings: hdg:pio, hdh:pio
VP_IDE: VIA vt8233a (rev 00) IDE UDMA133 controller on pci0000:00:11.1
ide0: BM-DMA at 0x9400-0x9407, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0x9408-0x940f, BIOS settings: hdc:DMA, hdd:DMA
Tried with and without DMA
cdRW (doesn't work) cdROM (works)
# hdparm /dev/hdd # hdparm /dev/hdc
/dev/hdd: /dev/hdc:
HDIO_GET_MULTCOUNT failed: Invalid argument (same)
IO_support = 1 (32-bit) (same)
unmaskirq = 1 (on) (same)
using_dma = 1 (on) (same)
keepsettings = 0 (off) (same)
readonly = 1 (on) (same)
readahead = 256 (on) (same)
HDIO_GETGEO failed: Invalid argument (same)
bonzopad:~# cat /dev/hdd | od | more
cat: /dev/hdd: No medium found
0000000
kern.log - bonzopad kernel: cdrom: open failed.
bonzopad:~# date;mount -t iso9660 /dev/hdd /cdrw
Fri May 7 00:38:11 CDT 2004
mount: block device /dev/hdd is write-protected, mounting read-only
mount: No medium found <<< this comes out 45 seconds later along with kern.log
kern.log - 00:38:56 bonzopad kernel: cdrom: open failed.
bonzopad:~# hdparm -i /dev/hdd (my cdRW - doesn't work)
/dev/hdd:
Model=CENDYNE_481648AX, FwRev=V150F, SerialNo=
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=yes, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2
AdvancedPM=no
Drive conforms to: device does not report version: 4
* signifies the current active mode
bonzopad:~# hdparm -i /dev/hdc (my cdROM - it does work)
/dev/hdc:
Model=ATAPI 48X CDROM, FwRev=VER-3.40, SerialNo=
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=yes, tPIO={min:227,w/IORDY:120}, tDMA={min:120,rec:150}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2
AdvancedPM=no
* signifies the current active mode
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