How to mirror the rootvg in AIX?

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. 



  1. Ground work:

 

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)

 

 

  1. Mirror the rootvg

 

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.

 

 

 

  1. Validation

 

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

 

 

 

  1. Roll back

 

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.

 

 

 

  1. Downtime

 

NO downtime required for this mirror process.

 

 

source: http://howtoaix.blogspot.com/2013/01/how-to-mirror-rootvg-in-aix.html

 

 

Attachments
There are no attachments for this article.
Related Articles RSS Feed
AIX -- extending Logical Volumes online
Viewed 3027 times since Tue, Mar 12, 2019
Part 2, NFS monitoring and tuning
Viewed 6876 times since Mon, Jun 4, 2018
Getting list users and groups in AIX
Viewed 4252 times since Mon, May 28, 2018
AIX POWERHA/HACMP: Basic commands
Viewed 5783 times since Sat, Jun 2, 2018
Trick to Purge/Clean Swap Usage on AIX
Viewed 8626 times since Thu, Nov 29, 2018
Getting bosboot errors, don’t reboot just yet
Viewed 3147 times since Tue, Apr 16, 2019
IBM V7000f Performance Test with Vdbench Tool on IBM AIX
Viewed 16488 times since Thu, Jan 23, 2020
AIX, Security, System Admin↑ Generating random passwords
Viewed 3291 times since Fri, Apr 19, 2019
AIX, Installation, NIM↑ Creating an LPP source and SPOT in NIM
Viewed 15393 times since Fri, Apr 19, 2019
10 AIX Commands to Add to Your Toolbox
Viewed 4785 times since Sat, May 19, 2018