How to 'split' mirror disk for OS upgrade purpose


 
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# 1  
Old 06-06-2006
How to 'split' mirror disk for OS upgrade purpose

Plan to upgrade Solaris from version 8 to version 9. Understand that if the boot disk is mirrored, I need to split it first before upgrade, how can I do that?

Please advise.
Thank you.
# 2  
Old 07-22-2008
If your disks are mirrored with SDS then type these commands:
Code:
 lockfs -f ; lockfs -f ;  metadetach <mirror> <submirror>

then check if you can mount the <submirror> somewhere aside and, preferebly fsck it.

I'd strongly recommend to stop as many applications as possible before doing that -- just to be on a safer side.

You could also go into single user mode (very safe, but causes more downtime).

There's also one option for tough guys: go to the server and pull the disk!
- please consider this as a joke.
# 3  
Old 07-22-2008
No mather which way You choose, remove the disk physically once detached!
I've already seen people overwritng their only backups...
 
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