kernel 2.6.26fc+ ISOFS: Unable to identify CD-ROM format"
 

HI All,
Recently I compiled a linux fedora kernel (2.6.27fc_x86_64bit) for sata support. After successful compilation and installation with new kernel, :-
--System is not able to mount cdrom.
--Always generate error, "medium not found"
--dmesg have an entry some thing like " ISOFS: Unable to identify CD-ROM format"


I don't know what went wrong, but i cross checked my new kernel config and my new kernel have following support:- (in respect of cdrom)
--SCSI device drive support[*]
--iso9660 file system support[*]
--ata-ide device support[*]
Also
--Sure of media (able to mount on different linux box)
--Can mount ISO image (i.e mount -t iso9660 image dir), So ther is no problem with FS spport
--Logs show kernel is able to mount Device
"scsi 0:0:0:0: CD-ROM TSSTcorp CDRW/DVD TSL462D DE01 PQ: 0"
So can't be problem with kernel modules

Now what comes in middel to all this ?? Plz help !!

Machine Details:
OS : kernel 2.6.26fc 64-bit
Ram: 32 Bit
disk: 4 Tb
Vendor : Dell RJ950

Output of LCPCI:-
--------------------
0:11.0 Host bridge: Intel Corporation 5000 Series Chipset Reserved Registers (rev 12)
00:13.0 Host bridge: Intel Corporation 5000 Series Chipset Reserved Registers (rev 12)
00:15.0 Host bridge: Intel Corporation 5000 Series Chipset FBD Registers (rev 12)
00:16.0 Host bridge: Intel Corporation 5000 Series Chipset FBD Registers (rev 12)
00:1c.0 PCI bridge: Intel Corporation 631xESB/632xESB/3100 Chipset PCI Express Root Port 1 (rev 09)
00:1d.0 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #1 (rev 09)
00:1d.1 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #2 (rev 09)
00:1d.2 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #3 (rev 09)
00:1d.7 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset EHCI USB2 Controller (rev 09)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d9)
00:1f.0 ISA bridge: Intel Corporation 631xESB/632xESB/3100 Chipset LPC Interface Controller (rev 09)
00:1f.1 IDE interface: Intel Corporation 631xESB/632xESB IDE Controller (rev 09)
01:00.0 PCI bridge: Intel Corporation 6702PXH PCI Express-to-PCI Bridge A (rev 09)
02:08.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1068 PCI-X Fusion-MPT SAS (rev 01)
03:00.0 PCI bridge: Broadcom EPB PCI-Express to PCI-X Bridge (rev c3)
04:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)
05:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Upstream Port (rev 01)
05:00.3 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express to PCI-X Bridge (rev 01)
06:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Downstream Port E1 (rev 01)
06:01.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Downstream Port E2 (rev 01)
07:00.0 PCI bridge: Broadcom EPB PCI-Express to PCI-X Bridge (rev c3)
08:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)
0b:00.0 PCI bridge: Broadcom EPB PCI-Express to PCI-X Bridge (rev c3)
0c:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)
0e:00.0 PCI bridge: Broadcom EPB PCI-Express to PCI-X Bridge (rev c3)
0f:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)
11:0d.0 VGA compatible controller: ATI Technologies Inc ES1000 (rev 02)


OUTPUT OF dmesg:
-------------------
ata1.00: ATAPI: TSSTcorpCD-RW/DVD-ROM TSL462D, DE01, max UDMA/33
ata1.00: configured for UDMA/33
ata2: port disabled. ignoring.
scsi 0:0:0:0: CD-ROM TSSTcorp CDRW/DVD TSL462D DE01 PQ: 0 ANSI: 5
sr0: scsi3-mmc drive: 24x/24x writer cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.20
sr 0:0:0:0: Attached scsi CD-ROM sr0
scsi 3:0:0:0: CD-ROM Dell Virtual CDROM 123 PQ: 0 ANSI: 0 CCS
scsi 4:0:0:0: Direct-Access Dell Virtual Floppy 123 PQ: 0 ANSI: 0 CCS
sr1: scsi-1 drive
sr 3:0:0:0: Attached scsi CD-ROM sr1
sd 4:0:0:0: [sdc] Attached SCSI removable disk
sr 0:0:0:0: Attached scsi generic sg0 type 5
sd 2:0:0:0: Attached scsi generic sg1 type 0
sd 2:0:1:0: Attached scsi generic sg2 type 0
sr 3:0:0:0: Attached scsi generic sg3 type 5
sd 4:0:0:0: Attached scsi generic sg4 type 0

OUTPUT OF /proc/sys/dev/cdrom/info
------------------------------------
CD-ROM information, Id: cdrom.c 3.20 2003/12/17

drive name: sr1 sr0
drive speed: 1 24
drive # of slots: 1 1
Can close tray: 1 1
Can open tray: 1 1
Can lock tray: 1 1
Can change speed: 0 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: 0 1
Can write CD-RW: 0 1
Can read DVD: 0 1
Can write DVD-R: 0 0
Can write DVD-RAM: 0 0
Can read MRW: 0 1
Can write MRW: 0 1
Can write RAM: 0 1


Thanks
-A

Always post what distro and version you are running. It at least gives us somewhere to start.

Hi
OS-Details:
Centos5.2 with kernel 2.6.26, x86_64 Bit.

Have you tried the regular Centos 2.6.18-128.1.6.el5 kernel. RHEL/Centos kernel #s are deceptive in that they back patch the kernels to the equivalent of much more current kernels.

HI
I have no issue with any other kernel version except, this one.
Btw,
I am able to mount it by changing some kernel boot parameter. (i.e at boot parameter , added all-generic-ide).
Now is it possible to inform kernel to detect any device in ide mode regardless of all.
(i.e, i am looking for some thing like /dev/sda = genric-ide )
--Alok