--- "Guy T. Rice" <[EMAIL PROTECTED]> wrote:
> On Fri, 07 Jul 2000, Thierry Vignaud wrote:
>
> > I don't think it's an eide driver bug : it's just
> that the new driver stress
> > more hardware (if your eide hd and controller
> reports to support udma, you
> > just want to use it).
>
> Huh. According to hdparm, it's not using dma at
> all.
>
> /dev/hdb:
> multcount = 16 (on)
> I/O support = 0 (default 16-bit)
> unmaskirq = 0 (off)
> using_dma = 0 (off)
> keepsettings = 0 (off)
> nowerr = 0 (off)
> readonly = 0 (off)
> readahead = 8 (on)
> geometry = 977/255/63, sectors = 15698592,
> start = 0
>
> > the problem won't appear with kernel-linus because
> it's
> > nicer with hardware (try hdparm -Tt on /dev/hda to
> compare).
> > For me, it's a hardware bug (hd or cable; eg, for
> udma66, lots of read error
> > were due to bad cables ...)
This is bull! I have 2.2.16-9mdk working fine with
UDMA33 ***AND*** UDMA66! But 2.2.17-0.5mdk or
hackkernel-2.4.0-0.8mdk hangs.
> Alas, I don't have udma66, my motherboard is older
> than that...
>
> As far as I'm concerned, if one piece of software
> can read a piece of
> hardware perfectly, whereas another piece of
> software has difficulty with
> it, that's an obvious software problem. There may
> be hardware issues
> involved, but what it boils down to is the second
> piece of software isn't
> robust enough to support as much hardware as the
> first one does. The
> second piece of software is doing something with the
> hardware in question
> that it shouldn't. If there's no way to disable
> that feature (i.e. some
> hdparm setting to make it work), the software's
> busted and needs to be
> fixed.
Well said, exactly my thoughts.
If Linux still has support for arcane or ancient
hardware that nobody uses anymore, why shouldn't it
support new widely used hardware (read WD drives) with
some minor problems (if this is the case, which I
doubt).
As I said before, I have **four** harddrives in a
Promise66, plus I am using the onboard IDE too! "/usr"
and "/home" are in a raid0 stripe containing a DMA
mode2 (UDMA33) drive and a DMA mode4 (UDMA66) drive,
and they work very good with 2.2.16! And I really
pound my drives, since I run a lot of I/O intensive
processes with large datasets that keep and my stripes
busy almost 40-60% of the time.
=====
________________________
Eugenio Diaz, BSEE/BSCE
Linux Engineer
[EMAIL PROTECTED]
__________________________________________________
Do You Yahoo!?
Get Yahoo! Mail � Free email you can access from anywhere!
http://mail.yahoo.com/
