How to mirror the rootvg in AIX?
This procedure is to assume the rootvg having hdisk0 and we need to take a mirror to hdisk1.
lspv --> find out the none disk on the server for the mirroring.
bootinfo -s hdisk1 --> check the size of the hdisk1 (It should be equal or bigger than hdisk0)
extendvg rootvg hdisk1 --> Extend hdisk1 into the rootvg (force to extend if it throws error "extendvg -f rootvg hdisk1")
mirrovg -S rootvg hdisk1 --> To initiate the mirror in background which help us to access the rootvg volume group
lsvg rootvg|grep -i stale --> To check status of the sync process. (Execute the cmd again and again until the stale PPs becomes zero
lsvg -l rootvg --> Check and confirm the number of PPs is double than number of LPs.
bosboot -ad /dev/hdisk1 --> To create the boot images on hdisk1
bootlist -m normal hdisk0 hdisk1 --> To add the hdisk1 on the bootlist.
bootlist -m normal -o --> To confirm both hdisk0 and hdisk1 is part of the boot sequence.
lsvg -l rootvg --> Check and confirm the number of PPs is double than number of LPs.
lsvg rootvg|grep -i stale --> To check the number of stale pp is Zero
unmirrorvg rootvg hdisk1 --> To unmirror the hdisk1 in the mirroring.
reducevg rootvg hdisk1 --> To get the hdisk1 out of the rootvg
chpv -c hdisk1 --> To Clear the boot image on the hdisk1
bootlist -m normal hdisk0 --> To remove hdisk1 on the boot sequence which means add the hdisk0 alone on the boot sequence.
bootlist -m normal -o --> To confirm only hdisk0 is part of the boot sequence.
NO downtime required for this mirror process.
source: http://howtoaix.blogspot.com/2013/01/how-to-mirror-rootvg-in-aix.html
Article Number: 14
Posted: Mon, May 21, 2018 7:31 PM
Last Updated: Mon, May 21, 2018 9:34 PM
Online URL: http://kb.ictbanking.net/article.php?id=14