[Info-vax] Need help mounting shadow set

[Richard B. Gilbert]

VAXman- @SendSpamHere.ORG wrote:
> In article <07a455e4-2b97-47dd-8973-e96a8add3a2d at j28g2000vbl.googlegroups.com>, Tom Adams <tadamsmar at yahoo.com> writes:
>> On Oct 7, 8:14=A0am, "R.A.Omond" <Roy.Om... at BlueBubble.UK.Com> wrote:
>>> Tom Adams wrote:
>>>
>>>> [...snip...]
>>>> I kept my "bad" disk in the shadow set. =A0It is currently showing no
>>>> errors. =A0I 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. =A0Or, so I have been told here. =A0I 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
>>> =A0 =A0 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 ;-)
> 
> Since this is only a 2.1GB shadowset, it would seem to me to be smarter
> to get a new set of drives.  4.3GB and large drive are going for a song 
> on ebay.
> 

IF you want used drives.  They are cheaper but if you must depend on 
them perhaps buying new is the better strategy.  The smallest IDE drive 
you can find is 40GB.  I haven't bought a SCSI drive in six or seven 
years now and don't know what's available or pricing!