Since I first tried the 2.5.x serie (with 2.5.3), I got errors when
reading from my CD-ROM :
Feb 7 00:20:44 fw kernel: end_request: I/O error, dev 16:40, sector 464
Feb 7 00:20:45 fw kernel: hdd: cdrom_read_intr: data underrun (4294967256
blocks)
Feb 7 00:20:45 fw kernel: end_request: I/O error, dev 16:40, sector 7948
Feb 7 00:20:45 fw kernel: hdd: cdrom_read_intr: data underrun (4294967160
blocks)
Feb 7 00:20:45 fw kernel: end_request: I/O error, dev 16:40, sector 8052
Feb 7 00:20:45 fw kernel: hdd: cdrom_read_intr: data underrun (4294967224
blocks)
Feb 7 00:20:45 fw kernel: end_request: I/O error, dev 16:40, sector 8116
Feb 7 00:20:45 fw kernel: hdd: cdrom_read_intr: data underrun (4294967288
blocks)
Feb 7 00:20:45 fw kernel: end_request: I/O error, dev 16:40, sector 8180
Feb 7 00:20:45 fw kernel: hdd: cdrom_read_intr: data underrun (4294967256
blocks)
Feb 7 00:20:45 fw kernel: end_request: I/O error, dev 16:40, sector 14916
Feb 7 00:20:45 fw kernel: hdd: cdrom_read_intr: data underrun (4294967160
blocks)
Feb 7 00:20:45 fw kernel: end_request: I/O error, dev 16:40, sector 15020
*** I didn't have these errors with 2.4.17 ***
My CD-ROM is a generic one (I don't have physical access to the
box now, but if requested I will tell you more).
When doing "cat /mnt/cdrom/* >/dev/null" I can see I/O errors
reported by cat but only on the 2.5.X serie.
The problem occurs on 2.5.3 and 2.5.4-pre1 (without any patch
applied). I didn't tried with versions between 2.5.0 and 2.5.3.
I can see this from the boot log (I compiled with the VIA VT82Cxxxx driver)
:
Feb 7 02:43:29 fw kernel: Uniform Multi-Platform E-IDE driver Revision:
6.32
Feb 7 02:43:29 fw kernel: ide: Assuming 33MHz system bus speed for PIO
modes; override with idebus=xx
Feb 7 02:43:29 fw kernel: VP_IDE: IDE controller on PCI slot 00:07.1
Feb 7 02:43:29 fw kernel: VP_IDE: chipset revision 6
Feb 7 02:43:29 fw kernel: VP_IDE: not 100%% native mode: will probe irqs
later
Feb 7 02:43:29 fw kernel: ide: Assuming 33MHz system bus speed for PIO
modes; override with idebus=xx
Feb 7 02:43:29 fw kernel: VP_IDE: VIA vt82c586a (rev 25) IDE UDMA33
controller on pci00:07.1
Feb 7 02:43:29 fw kernel: ide0: BM-DMA at 0x6000-0x6007, BIOS settings:
hda:pio, hdb:pio
Feb 7 02:43:29 fw kernel: ide1: BM-DMA at 0x6008-0x600f, BIOS settings:
hdc:pio, hdd:pio
Feb 7 02:43:29 fw kernel: hda: JTS Corporation CHAMPION MODEL C2000-2A, ATA
DISK drive
Feb 7 02:43:29 fw kernel: hdd: ATAPI 50X CDROM, ATAPI CD/DVD-ROM drive
Feb 7 02:43:29 fw kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Feb 7 02:43:29 fw kernel: ide1 at 0x170-0x177,0x376 on irq 15
Feb 7 02:43:29 fw kernel: blk: queue c02e06a4, I/O limit 4095Mb (mask
0xffffffff)
Feb 7 02:43:29 fw kernel: hda: 3913056 sectors (2003 MB) w/256KiB Cache,
CHS=970/64/63
Feb 7 02:43:29 fw kernel: hdd: ATAPI 50X CD-ROM drive, 128kB Cache
Feb 7 02:43:29 fw kernel: Uniform CD-ROM driver Revision: 3.12
[root@fw /root]# hdparm /dev/hdd
/dev/hdd:
HDIO_GET_MULTCOUNT failed: Invalid argument
I/O support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 0 (off)
keepsettings = 0 (off)
HDIO_GET_NOWERR failed: Invalid argument
readonly = 1 (on)
readahead = 8 (on)
HDIO_GETGEO_BIG failed: Invalid argument
What is funny is that if I switch DMA on, the errors are not reported
anymore on dmesg, but 'cat' continues to see IO errors (and eventually
the IO are locked).
Should I try the IDE patch?
Please CC me, I'm just read the list on archives...
----
Beno?t GARNIER
On Thu, 7 Feb 2002, Benoit Garnier wrote:
> Should I try the IDE patch?
The IDE patch is already in 2.5.3
Cheers,
Zwane Mwaikambo
On Thu, Feb 07 2002, Benoit Garnier wrote:
>
> Since I first tried the 2.5.x serie (with 2.5.3), I got errors when
> reading from my CD-ROM :
>
> Feb 7 00:20:44 fw kernel: end_request: I/O error, dev 16:40, sector 464
> Feb 7 00:20:45 fw kernel: hdd: cdrom_read_intr: data underrun (4294967256
> blocks)
Ok, will take a look at this today.
--
Jens Axboe