[Info-vax] Need help mounting shadow set

[Tom Adams]

On Oct 7, 8:14 am, "R.A.Omond" <Roy.Om... at BlueBubble.UK.Com> wrote:
> Tom Adams wrote:
>
> > [...snip...]
>
> > I kept my "bad" disk in the shadow set.  It is currently showing no
> > errors.  I think the "bad" disk is only a problem when a bad block
> > gets located in a trailing block of a file where the sun don't shine.
> > When that happens, it logs an error when I put it in the shadowset or
> > when I run ANAL/DISK/SHAD.  Or, so I have been told here.  I guess its
> > a bug in the shadowing software that does not handle the trailing
> > blocks consistently.
>
> OK, since you've kept your "bad" disk, you might consider re-formatting
> it (and, no, that's not a bug in the shadowing software).
>
> Check out Hoff's recent addition to the World of Knowledge at:
>
> http://labs.hoffmanlabs.com/node/1414
>
> So, say your "bad" disk is DKB100:
>
> 1) Dismount it from your shadowset
>
> 2) $ mcr sys$etc:rztools_alpha
>     RZTools> dkb100: /format
>
> This will do a low-level format of your disk, and add any bad blocks
> found to the bad block list, giving you a "fresh" disk.

I tried that before I bought the "new" disk.  It was suggested on an
earlier thread during earlier rounds of my battle with this disk.
Did not do any good.  Still got bad blocks when I recomposed the
shadowset.

Do we know that that would even work in theory?  Does shadowing even
use that bad block list?

>
> How long it lasts before new bad blocks are found is another question
> for another time ;-)