[WBEL-users] File corruption and new kernel

[Graham David Purcocks M.A.(Oxon.)]

Bob

Is that a *real* speed comparison or are you exagerating a trifle? :)

I'm asking as we use RH and SATA systems and have not specifically
noticed poor performance. That said we do have an application which
requires a huge disc database (3D model) which runs faster if the data
is compressed, which says it is disc bound.

Your statements imply that the built-in driver may have something to do
with that.

Not helping your problem but an interesting side issue.

Your comments are appreciated.
Graham

On Fri, 2005-05-27 at 17:54, Bob Ramstad wrote:
> Righto.  The builtin driver gives 1/20th of the performance of the
> sata_sil driver.  Using the builtin driver it's about twice as slow as
> a floppy.
> 
> I've run badblocks on every partition using the read write test, and
> also run all the diagnostics from the manufacturer, no issues popped
> up at all.
> 
> I'm a bit baffled as to what is going on...  but I do see that
> sata_sil has been under constant development and I'm sure the version
> in the current kernel-source RPM is old.
> 
> -- Bob
> 
> On 5/27/05, Graham David Purcocks M.A.(Oxon.) <grahamp at wsieurope.com> wrote:
> > And what happens if you use the crappy builtin driver? Maybe there is a
> > reason that is the one being issued.
> > 
> > Don't know but worth asking the question.
> > 
> > 
> > BTW, We've had problems with a large number of SATA drives being duff,
> > so you could have a bad one.
> > 
> > Graham
> > 
> > On Fri, 2005-05-27 at 17:30, Bob Ramstad wrote:
> > > Hey there.  Two quickies...
> > >
> > > 1) I'm running the latest WBEL3 kernel recompiled with sata_sil
> > > instead of the crappy builtin driver.  I've been seeing some file
> > > corruption, it's odd, but basically when I copy large quantities of
> > > files (20+ GB) it is not uncommon for a handful of files to be
> > > corrupted.  As an example the other day, I copied 55 GB worth of
> > > files, roughly 2200 files in total, and ended up with three that
> > > wouldn't pass md5sum --check as compared to the original.
> > >
> > > Note in this case that the Serial ATA drives were the source, and the
> > > destination was a FAT32 filesystem.  Also note that once I recopied
> > > those three files, everything was fine.
> > >
> > > Has anyone else seen anything along these lines?  I would assume it's
> > > a Serial ATA specific problem, but not sure.
> > >
> > > 2) I'm feeling like the best thing to do would be to get a more recent
> > > kernel.  Part of me doesn't like doing this as it would fall outside
> > > the "yum" model i.e. if there's an update, I won't be automatically
> > > notified.  Is there anyone out there aware of a kernel-source yum
> > > repository for WBEL3 that is regularly updated for the latest 2.4
> > > kernel?
> > >
> > > -- Bob
> > >
> > > _______________________________________________
> > > Whitebox-users mailing list
> > > Whitebox-users at beau.org
> > > http://beau.org/mailman/listinfo/whitebox-users
> > --
> >
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