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AIX5.2 root mirroring

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nyck

nyck

Technical User
Joined
Mar 10, 2004
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Hello,

I have a need to mirror the root volume group (rootvg), can someone send me a straight forward dummy's guide on how to do this please?

I have been looking round the interweb and found stuff but each thing says something different :-(

Cheers

Nick
 
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Nick,
First bring in the disk, after mapping the disk on VIOS, run cfgmgr and you will see the new disk.
Steps:
1. run cfgmgr
2. change the disk attributes if any (like hcheck_interval time etc..,)
3. extendvg the disk to rootvg by running extendvg rootvg hdiskX (where X=disk no)
4. now mirror the disk, mirrorvg -S rootvg hdiskX (-S flag tells to sync in the background). It will return soon, but will take some time to sync all LV.
5. now check for mirror, lsvg -l rootvg (you should see PPs=2) and LV STATE=open/syncd
6. if at all you see any stale LV's use syncvg -v rootvg and that should sync then.
7. verify the bootlist, run bootlist -m normal -o


SARFARAZ AHMED SYED,
Sr. Systems Engineer
 
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Hello,

thanks for the quick response :-)

Once all is mirrored do I need to also perform the following task?

• Run a bosboot on both new disks, this will install all software needed for boot on the disk
o bosboot -ad hdisk0
o bosboot -ad hdisk1
 
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Oh, that was suppose to be my 7th step, I missed it and listed bootlist on it.

Any ways!! good luck.

SARFARAZ AHMED SYED,
Sr. Systems Engineer
 
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me again,

So just to be 100% sure, do I run the bosboot -ad command on both of the root disks or just the mirror i.e hdisk1 ?

Cheers

Nick
 
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No harm in running on both disk. Also make sure you see hd5 on both disks.
you can add by running bootlist command.

SARFARAZ AHMED SYED,
Sr. Systems Engineer
 
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