On Wed, 5 Apr 2000, Simon Kirby wrote:
> On Tue, Apr 04, 2000 at 04:19:15PM -0400, Alexander Viro wrote:
>
> > On Tue, 4 Apr 2000, Jeff Garzik wrote:
> >
> > > Copying an ISO from a 2.2.15-pre17 SMP box, over a network, to a
> > > 2.3.99-pre4-pre3 K6 box.
Is this a VIA chipset core??
> The corruption starts at offset 3072 which I suppose could indicate read
> corruption because I was copying from a 1K ext2 filesystem to a 2K ext2
> filesystem.
>
> I was able to reproduce read corruption by doing nothing but reading the
> same xfree source tree over and over again (via find...xargs md5sum), but
> only twice out of hundreds of tries. The corruption vanished from cache
> before I coud look at either case.
>
> Again, I'm on an SMP box (2 processors) with 128 MB ECC SDRAM and three
> drives (hda, hdb, hdc), copying from hdc2 (1K) to hdb2 (2K). Booting
> with "nosmp" makes the problem disappear. I also saw the corruption
> simply reading from hda, so the cross-major/device thing might not be
If recall this was a BX Celeron SMP with RISER-CARDS??
> Disabling DMA mode to the drive with "hdparm -d 0" (using PIO instead)
> seems to help reproduce the problem...I can't even seem to reproduce it
> at all anymore with DMA enabled, but it might still happen if I left it
> copying for hours.
I have lost the previous mail........
Is there a way I can touch this box across the net?
Andre Hedrick
The Linux ATA/IDE guy
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