I'm trying to find the cause of some kernel lockups which occur when
accessing the disks. Athlon XP 1800+, KT266/A/333 chipset, 1.5GB RAM,
SuSE 9.2. /dev/hda 200G Seagate, /dev/hdb 80G Seagate, both installed in
removable caddies.
/dev/hd[ab]:
multcount = 16 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
Unpacking a tar file with 21000 files and 400MB into hdb1 crashes the
kernel. Syslog shows something like this:
...
kernel: ide: failed opcode was: unknown
kernel: hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error }
kernel: hdb: dma_intr: error=0x84 { DriveStatusError BadCRC }
kernel: ide: failed opcode was: unknown
kernel: hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error }
kernel: hdb: dma_intr: error=0x84 { DriveStatusError BadCRC }
kernel: ide: failed opcode was: unknown
kernel: hda: DMA disabled
kernel: ide0: reset: success
Reboot. Two concurrent dd thrashing the disk
dd bs=1k if=/dev/hdb1 of=/dev/null skip=60000000 &
dd bs=1k if=/dev/zero of=/dev/hdb1 count=1000000 &
fail to cause any trouble. What can I try next?
Any ideas much appreciated,
Volker
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