[Info-vax] Invalid Media Address when merging disk into a shadowset

Jim mckinneyj at saic.com
Wed Feb 26 13:39:31 EST 2014


On Wednesday, February 26, 2014 1:28:48 PM UTC-5, tadamsmar wrote:
> This is on a DS10 600 mhz running VMS 7.3-2.
> I was trying to replace a disk.  I installed it as DKA100 and tried to merge it into the shadowset.
> When the merge is 99% complete it gets stuck and I get a SSRVTTERMCOPY message and a SSRVTTRMSTS message saying that the termination status is IVADDR invalid media address.  (these message keep repeating till I dismount the disk I am trying to merge).
>
> Any ideas?
>
> This disk I installed is a new 146 GB disk and the shadowset is only 9 GB, but that should not matter, and I already tested the disk by merging it in another shadowset.
> 
> PS: I just had an idea while writing the message.  There was a unrecoverable error on the disk I was trying to replace.  That could mean the the good disk in the shadowset still maps around that error.  This is similar to the situation in
> 
> this ECO where IVADDR occurs.
> 
> http://ftp.uma.es/Vms/parches/v7.3/VMS73_SHADOWING-V0300.txt
> 
> That ECO dates from 2003, and I have  VMS721_SHADOWING V5.0  shadowing installed in 2005. I wonder if that includes the ECO?  I must have it unless I failed to get the latest patches in 2005.
> 
> I could save and restore the disk to try to get the shadow set to forget about the unrecoverable error, if that recall is causing the error.
> 
> But I am just guessing, I dont know how a shadow set handles an unrecoverable error on one of its members.

Maybe just allocate the remainder of the disk to a single file and then delete/erase it - should result in a rewrite/revector of the block (if a block is what is causing the problem). Something like this might do the trick...

$ copy/allo=xxxx nl: disk:[000000]t.t
$ delete/erase disk:[000000]t.t;0



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