Hi,

on a i386 system running -current (2.99.11) I'm using RAIDframe to mirror
60GB parts of two 80GB IDE disks. Both disks are new and recently installed
because one of the old disks failed. Partial dmesg output of the system in
question is show below.
While doing heavy I/O, messages like the following are logged:

wd1a: error reading fsbn 35173280 of 35173280-35173311 (wd1 bn 35173343; cn 34894 tn 3 sn 2), retrying
wd1: (aborted command, interface CRC error)
wd1: soft error (corrected)

I remember seeing similar (at least for me) messages[1] whith the old
disks in the same machine.

After a while, the kernel decides to downgrade wd1:

wd1a: error reading fsbn 36275744 of 36275744-36275775 (wd1 bn 36275807; cn 35987 tn 14 sn 29), retrying
wd1: (aborted command, interface CRC error)
wd1: transfer error, downgrading to Ultra-DMA mode 5
wd1(viaide0:1:0): using PIO mode 4, Ultra-DMA mode 5 (Ultra/100) (using DMA)
cd1(viaide0:1:1): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA)

This is quite reproducible so far.

Hmm, does this look like a bad disk? Hints are appreciated!


TIA, Jukka

[1] http://mail-index.netbsd.org/netbsd-help/2004/10/25/0006.html

NetBSD 2.99.11 (GENERIC) #0: Wed Dec 22 16:41:14 CET 2004
	build@himo.salmi.ch:/build/nbsd/sys/arch/i386/compile/GENERIC
[...]
viaide0 at pci0 dev 17 function 1
viaide0: VIA Technologies VT8235 ATA133 controller
viaide0: bus-master DMA support present
viaide0: primary channel configured to compatibility mode
viaide0: primary channel interrupting at irq 14
atabus0 at viaide0 channel 0
viaide0: secondary channel configured to compatibility mode
viaide0: secondary channel interrupting at irq 15
atabus1 at viaide0 channel 1
[...]
Kernelized RAIDframe activated
atapibus0 at atabus0: 2 targets
cd0 at atapibus0 drive 1: <ASUS    CD-S520/A, , 1.6K> cdrom removable
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
wd0 at atabus0 drive 0: <HDS728080PLAT20>
wd0: drive supports 16-sector PIO transfers, LBA48 addressing
wd0: 78533 MB, 159560 cyl, 16 head, 63 sec, 512 bytes/sect x 160836480 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd0(viaide0:0:0): using PIO mode 4, Ultra-DMA mode 6 (Ultra/133) (using DMA)
cd0(viaide0:0:1): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA)
atapibus1 at atabus1: 2 targets
cd1 at atapibus1 drive 1: <PLEXTOR CD-R   PX-W4012A, 438146, 1.05> cdrom removable
cd1: 32-bit data port
cd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
wd1 at atabus1 drive 0: <HDS728080PLAT20>
wd1: drive supports 16-sector PIO transfers, LBA48 addressing
wd1: 78533 MB, 159560 cyl, 16 head, 63 sec, 512 bytes/sect x 160836480 sectors
wd1: 32-bit data port
wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd1(viaide0:1:0): using PIO mode 4, Ultra-DMA mode 6 (Ultra/133) (using DMA)
cd1(viaide0:1:1): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA)
raid0: RAID Level 1
raid0: Components: /dev/wd0a /dev/wd1a
raid0: Total Sectors: 120103040 (58644 MB)
boot device: raid0
root on raid0a dumps on raid0b
root file system type: ffs
[...]

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