Re: DMA is turned off on my HDD

On Thu, Jul 17, 2008 at 20:03:00 +0300, Anton Liaukevich (anthonyl@xxxxxxxx) wrote:

Bob Cox wrote:
On Thu, Jul 17, 2008 at 14:48:22 +0300, Anton Liaukevich
(anthonyl@xxxxxxxx) wrote:

[snip]

I had scanned my hdd with native WD scanner and hadn't detected any
error. Memory scan (memtest86+) also hadn't detected any error.
Moreover, Windows XP on another partition of this hdd working
normally and HDD Health program on it (for S.M.A.R.T viewing) don't
predict T.E.C. in the near future. Also after previous installation
of Debian lenny my hdd was working fast.

When you are running Windows XP, is DMA definitely enabled then?

I has run Windows XP and has been convinced of DMA to be enabled. My hdd
WD1200JB-00EVA0 was running at UDMA5 (ATA100) and cdrom Sony CRX320E at
UDMA2 (ATA33).

[ PLEASE reply to the list and not directly to me. Thank you ]

Ok well if you are sure about this then at least we know it is not a
hardware (jumpers, cable, connectors) problem.

With my WD IDE drive:

bob@trantor:~$ dmesg | grep -i dma
DMA 0 -> 4096
DMA zone: 32 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 4064 pages, LIFO batch:0
atp870u: use 32bit DMA mask.
NFORCE2: 0000:00:09.0 (rev a2) UDMA133 controller
ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA
hda: UDMA/100 mode selected
hdc: UDMA/66 mode selected
hdd: UDMA/66 mode selected
parport0: PC-style at 0x378 (0x778), irq 7, dma 3
[PCSPP,TRISTATE,COMPAT,EPP,ECP,DMA]


bob@trantor:~$ readlink /sys/block/hda/device/driver
../../../../../bus/ide/drivers/ide-disk

bob@trantor:~$ lsmod | grep ^ide
ide_cd 36224 0
ide_disk 15648 8
ide_core 108292 4 ide_cd,ide_disk,amd74xx,generic

Not sure if any of that is of help, but perhaps you could show us the
output of dmesg | grep -i dma

--
Bob Cox. Stoke Gifford, near Bristol, UK.
Registered user #445000 with the Linux Counter - http://counter.li.org/


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