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Can I restore a volume group from a system that has two hdisks to a system with only one?

Posted on 2011-09-20
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Last Modified: 2013-11-17
I'm sorry, this question is related to a previous one, but the 'ask related question' feature does not function as advertised.

I have a volume group image that I created from a system on which that volume group was mirrored accross hdisk4 and hdisk5. I'm trying to clone it with restvg on a system on which only hdisk5 appears to be healthy. Can I do that? When I run restvg I'm getting an error that's rather vague, so I don't know whether it's the defective disk that's causing the problem. My assumption is that restvg restores the image to one of the disks, and that I would have to create the submirror afterwards.
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Question by:babyb00mer
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woolmilkporc earned 500 total points
ID: 36568957
Hi again,

unfortunately it's not possible to simply restore a mirrored VG to an unmirrorred one.

Is it an mksysb of the rootvg, or is it a savevg?

Is the originating system still functional so you could pull a new mksysb/savevg?

If so you could either unmirror the LVs in question or edit the /image.data resp.
/tmp/vgdata/[vgname]/[vgname].data file to only mention one copy and half the amount of PPs before writing to tape (see link below).

https://www-304.ibm.com/support/docview.wss?uid=isg3T1011782

wmp








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Author Closing Comment

by:babyb00mer
ID: 36583662
As it turns out, we decided to replace the defective drive which rendered the question, moot.
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