kernel dropping DMA on primary controler

[rxKaffee]

After some minutes of running extremely laggy, my kernel will pull dma mode from both hard drives on my ide0. It was doing this previously when the system was slightly overclocked with no voltage increase, but I've reverted it to normal clocking. It ran without any problem for probably about a month at normal cpu speed, and then this started a day or two ago. I've pasted some info from dmesg below that I thinks relevant. If there's any other info needed, just let me know.

Linux version 2.6.11-gentoo-r5 (root@espresso) (gcc version 3.3.5 (Gentoo Linux 3.3.5-r1, ssp-3.3.2-3, pie-8.7.7.1))


Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller at PCI slot 0000:00:11.1
ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 11
PCI: setting IRQ 11 as level-triggered
ACPI: PCI interrupt 0000:00:11.1[A] -> GSI 11 (level, low) -> IRQ 11
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt8233a (rev 00) IDE UDMA133 controller on pci0000:00:11.1
ide0: BM-DMA at 0xcc00-0xcc07, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xcc08-0xcc0f, BIOS settings: hdc:DMA, hdd:DMA
Probing IDE interface ide0...
hda: IC35L040AVER07-0, ATA DISK drive
hdb: ST310232A, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: LITE-ON DVDRW SOHW-1633S, ATAPI CD/DVD-ROM drive
hdd: ARTEC WRA-WA48 1.00 20020308, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: 80418240 sectors (41174 MB) w/1916KiB Cache, CHS=65535/16/63, UDMA(100)
hda: cache flushes not supported
hda: hda1 hda2 hda3 < hda5 hda6 >
hdb: max request size: 128KiB
hdb: 20005650 sectors (10242 MB) w/512KiB Cache, CHS=19846/16/63, UDMA(66)
hdb: cache flushes not supported
hdb: hdb1
hdc: ATAPI 48X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache
Uniform CD-ROM driver Revision: 3.20
hdd: ATAPI 48X CD-ROM CD-R/RW drive, 2048kB Cache, UDMA(33)


hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdb: dma_intr: error=0x84 { DriveStatusError BadCRC }
ide: failed opcode was: unknown
hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdb: dma_intr: error=0x84 { DriveStatusError BadCRC }
ide: failed opcode was: unknown
hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdb: dma_intr: error=0x84 { DriveStatusError BadCRC }
ide: failed opcode was: unknown
hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdb: dma_intr: error=0x84 { DriveStatusError BadCRC }
ide: failed opcode was: unknown
hda: DMA disabled
ide0: reset: success



Thanks for your help everyone!

[NeddySeagoon]

rxKaffee,

Hmm. CRC errors indicate a drive in its death throes, if they are real.

Emerge smartmontools and use it to look at the drives internal status log.
It can also by a dieing IDE controller or cable. The errors do not have to be caused by the drive.

You may learn more by operating one drive alone on the ide0: cable.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.