Re: Restoring mksysb on bigger disk

From: Russ (r.stimler_NO_S_PAm_at_us.ibm.com)
Date: 11/18/03


Date: Tue, 18 Nov 2003 22:02:27 GMT

Just use Storix. It will let you select the disks to restore to, change
the LV and filesystem sizes, etc from the menus after you boot from the
tape. I know it will also look at your disk sizes and automatically
change the PP size of the VG and number of LPs in all the LVS if needed.
I have the full version, but I think I did all this even when I just had
the free version.

ketsak wrote:
> Hi all,
>
> I have RS/6K running 4.2.1 with mirrored ROOTVG on 4.3 GB disks (hdisk0
> & hdisk1). I want to take a system backup and JUST FOR verification
> purpose wants to restore it on the SAME system (as I don't have any
> spare system), but on DIFFERENT spare hard disks, of the size 18 GB
> each. While restoring I may not be able to power down/disable hdisk0 &
> hdisk1, i.e these two disks would be on line with 18GB disks.
>
>
>
> I know that before running mksysb I need to edit /image.data file to
> change PP size to 32 MB (currently it is 8 MB for 4.3 GB disks) under
> vg_data stanza. Also I need to verify PROMPT=YES in /bosinst.data file.
> Now my questions are :
>
>
>
> 1) Do I need to change PP size to 32 MB under all 'lv_data' stanza in
> /image.data ?
>
>
>
> 2) According to new PP size do I need to change FS_SIZE under 'fs_data'
> stanza in /image.data ?
>
>
>
> 4) After selecting target disks under Installation & Maintenance menu,
> still is there any possibility that restore process may affect
> existing rootvg on hdisk0 & hdisk1 ?
>
>
>
> 5) To avoid probable problem mentioned in Q-4, do I need to edit
> /bosinst.data file to reflect location of the target disks (18 GB
> disks) under 'target_disk_data' stanza ?
>
>
>
> 6) Suppose I succeed in restoring mksysb tape on new hard disks, now on
> simply physically removing those disks, will I be able to boot from
> hdisk0 again without any problem ?
>
>
>
> 6) Do you see any other potential problem in restoring this way ? Or
> please let me know if I may be missing some steps for successful
> restoration on bigger disks.
>
>
>
> Your interest and responses will be highly appreciated..... TIA
>
>
> --
> KPS
>
>
> Posted via http://dbforums.com



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