RE: rootspace NIGHTMARE
Bill,
Informix keeps the path to all dbspaces (including rootdbs)
in RESERVED PAGES - first 12 pages of the root dbspace.
In particular, primary chunks are on pages 6 and 7
(these pages contain absolutely the same information),
mirror chunks are on (mirrored) pages 8 and 9; page numbers start
from zero.
Use 'oncheck -pr' to display the information in reserved pages.
To avoid situations like what You had, it is strongly advised
to always use symbolic links to actual devices for Informix chunks.
Otherwise the only way to move the chunk to another location is to
make the binary editing of reserved pages
------------------------------------------
Alexey Sonkin
Senior Database Administrator
> -----Original Message-----
> From: Bill Hamilton [mailto:laidback@finsco.com]
> Sent: Friday, March 19, 2004 10:37 AM
> To: informix-list
> Subject: rootspace NIGHTMARE
>
> When I copied the rootspace to another drive and pointed the ONCONFIG at
> it,
> and restarted the IDS all works fine except:
> 1. oncheck says it cannot find the space.
> 2. onstat -d shows the wrong location.
> 3. ontape -r fails with a message that it cannot find the rootspace
>
> where is IDS storing the bad info?
>
> #3 is the most deadly.
> I had to restore from backup today and solved it by copying the root space
> to its old location.
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