How To Mirror VG and Root VG

How To Mirror VG and Root VG

There are steps involved through which administrator can mirror a VG and RootVg.

Steps tp mirror a VG:

Step 1: Extend the VG.

# extendvg <vgname> <pvname>

Step 2: mirror the VG.

# mirrorvg <vgname> <pvname>

Step 3: synchronize the VG.

# syncvg <vgname>

**********************************************

Steps to mirror RootVg:

There are steps by which admin can mirror a root vg:

Step 1: extend rootvg to a new pv:

# extendvg rootvg <pvname>

For eg:

# extendvg rootvg hdisk6

Step 2: mirror rootvg

# mirrorvg –m rootvg hdisk6

Step 3: make it bootable:

# bosboot –ad /dev/hdisk6

Step 4: define boot order:

# bootlist –m normal hdisk4 hdisk6

Step 5: synchronize rootvg:

# syncvg rootvg

Reboot OS to disable quorum checking on rootvg (By default disabled, when rootvg is mirrored but reboot is required).

Why rootvg is mirrored?

The main reason to mirror rootvg is to protect OS from disk failure.

Happy Learning !

 

VG Commands

leave a comment »

Although we have already discussed the use of VG Commands in detail in previous posts on LVM, this post will give a brief review about the various VG commands we have learned so far.

# mkvg

Command is used to create a new VG.

# extendvg

Command is used to add PVs to VG.

# reducevg

Command is used to remove PV from VG.

# chvg

Command is used to change VG.

# lsvg

Command is used to list all the VG in the system.

# importvg

Command is used to add/install a VG.

# exportvg

Command is used remove the VG from the system. we will discuss about the significance of exportvg command in detail in posts to come.

# reorgvg

Command is used to reorganize the VG.

# syncvg

Command is used to synchronize a VG.

# varyonvg

Command is used to make VG available to the system for use.

# varyoffvg

Command is used to make VG unavailable to the system.

# mirrorvg

Command is used to mirror all LV within a VG.

 

 

source: https://abcofaix.wordpress.com/tag/mirrorvg/

Attachments
There are no attachments for this article.
Related Articles RSS Feed
Installation of the Virtual I/O Server directly from the HMC
Viewed 21554 times since Tue, Jun 4, 2019
AIX: Remove existing disk
Viewed 2844 times since Sun, Jun 3, 2018
IBM AIX commands you should not leave home without
Viewed 7378 times since Mon, Jun 11, 2018
Part 2, Detailed diagnosis and troubleshooting
Viewed 2978 times since Tue, May 22, 2018
LVM: Extend an existing Volume Group by adding a new disk
Viewed 5843 times since Sat, Jun 2, 2018
Install and configure GNU’s screen on AIX
Viewed 9302 times since Thu, Feb 21, 2019
AIX - How to unlock and reset user’s account
Viewed 17095 times since Fri, Jun 8, 2018
AIX Replacing a failed disk (rootvg)
Viewed 8989 times since Tue, Jul 17, 2018
AIX HA / HACMP, System Admin↑ Mountguard
Viewed 7284 times since Mon, Jun 3, 2019
Got Duplicate PVIDs in Your User VG? Try Recreatevg!
Viewed 3853 times since Fri, Feb 1, 2019