Keep hd6 default paging space
AnthonyEnglish 270000RKFN Comments (5) Visits (9769)
image.data has invalid logical volume data.
Can not continue.
To reboot the system, press reset.
>>> 1 Continue with Install
In fact, the Continue with Install didn't continue because of this mysterious image.data error.
The file /image.data contains the list of logical volumes and file systems for the re-creation of the rootvg. In my case, the /image.data was created when I ran the mkdvd command, so I knew it was up to date. You can also create the image.data by running mkszfile, or by invoking mksysb with the -i flag.
My restore attempt failed because of something corrupted or missing from /image.data. What was it?
As it turned out, it was the default paging space - hd6 - which had gone missing. That was because I had created other paging spaces (paging00, paging01 etc.) in their own volume group some months ago, and then removed hd6 alto
As I couldn't use a customized image.data file via diskette or by creating a NIM image_data resource, I had to build the hd6 paging space on the original system and run another mksysb backup.
One of the benefits you get from reading this blog is that you can learn from my mistakes. Make sure you keep hd6 in rootvg!
For tips on paging space sizing and tuning, see the article Optimizing AIX 7 memory performance: Part 3, Tuning swap space settings.