[Info-vax] Problems restoring image-backup

[jouk]

On 28/06/16 22:57, Stephen Hoffman wrote:
> On 2016-06-28 19:35:44 +0000, David Froble said:
> 
>> My understanding is in an /IMAGE restore that all volume info comes
>> from the save set.
> 
> Nope.  Some contents change.
> 
>> Perhaps this is not correct?
> 
> Ayup.   It's not correct.
> 
>> If not, then I'd consider it a bug.
> 
> You can consider it a bug, but it's how the Itanium boot environment
> necessarily works, particularly with the hack-around that exists here
> for the lack of partitioning support within OpenVMS I64, as the EFI
> console requires the disk to be partitioned.   But it's also how the VAX
> and Alpha environments necessarily work with BACKUP, too.   The console
> bootstrap-related data structures involved here contain pointers to
> sectors.  With BACKUP /IMAGE, those sectors inherently change, which
> means that BACKUP can't slam in the old contents and boot.  On all three
> architectures, the boot structures are mapped to files.  Those file
> contents cannot be completely restored unmodified; the sector pointers
> have to change.
> 
> If you want a pristine restoration, maybe consider BACKUP /PHYSICAL or
> dd or such; a sector-oriented copy.
> 
> 
I gave up on this disk-image.
The reason I did it this way is that the backup-svaesets are stored on
some network drive, which I could easily access from the itanium and not
from a CD-boot.
I now took the hard-way : install OpenVMS on a spare drive
                          copy the save set to the new installation
                          restore the save set (actually the same file
                           and disk as the previous failed attemp

Regards
     Jouk