Messages in this thread | | | Date | Wed, 22 Mar 2000 11:01:12 -0500 (EST) | From | Mike Porter <> | Subject | Re: [2.3.99pre2] [CORRUPTION] Doh! Corruption problems again... |
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On Tue, 21 Mar 2000, Simon Kirby wrote:
> On Tue, Mar 21, 2000 at 12:16:22PM -0800, Andre Hedrick wrote: > > > On Tue, 21 Mar 2000, Simon Kirby wrote: > > > > > - hdparm -u 1 vs hdparm -u 0 on all drives does not seem to make a > > > difference. > > > > > > - hdparm -d 0 vs hdparm -d 1 on all drives tends to make the problem > > > happen even more often (guessing 5 times as often). Tested with > > > both -u 1 and -u 0. > > > > What is the rest of the hardware list? > > You are fingering the difference between DMAING and PIO. > > If you are trying to DMA with out autodma........you can and usually will > > be "SHAFTED"! > > What do you mean by trying to DMA without autodma? > > I'm using an ASUS P2B-DS (PIIX4 tuning and all enabled in kernel config) > with two Celerons. 128MB ECC SDRAM. Three WD hard drives are attached: > > hda: WDC WD273BA, 26105MB w/1961kB Cache, CHS=3328/255/63, UDMA(33) > hdb: WDC WD273BA, 26105MB w/1961kB Cache, CHS=3328/255/63, UDMA(33) > hdc: WDC AC28400R, 8063MB w/512kB Cache, CHS=16383/16/63, UDMA(33) > > The first two are UDMA/66 drives, but everything is plugged into the > UDMA/33 on-board controller.
I missed the beginning of this thread. I have the same board you have. I upgraded the BIOS to 1012 (maybe 1011 - I forget exactly). Any time I enable the full set of options (AUTODMA, PIIX tuning, etc, ie: what Andre says should be used), I eventually get DMA timeouts. If I'm careful, ie: booted into single user mode, root mounted r/o, DMA is turned off automatically when the failure occurs and the system recovers. If I'm running say, X, when the DMA failure occurs, sometimes the system can hang. I don't know exactly the result since I don't try testing DMA on a r/w drive any more. If I use something like dd if=/dev/hda of=/dev/null, I'll get DMA timeouts within a couple of seconds.
Kernels: lots: 2.2.15pre14, 2.3.99pre2, to name a few.
Drives: Seagate. I can't get to my home system right now, so I can't be more specific.
Does this match your experiences?
Mike
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