SAN online data Migration - AIX

SAN Online data Migration datavg 

SAN level data migration from similar or heterogeneous environment.

Prerequisites

Get Lun ID and size details from Storage team.

Steps

1. cfgmgr                                                     - scan for the new device  
2. lspv                                                         - check for the new device
3. bootinfo -s <device name>                      - check the size of the device
4. powermt display dev=<device name>      - check for the paths MPIO
5. extendvg datavg hdiskpower1                  - add the disk to the data VG
6. lsvg -l datavg                                           - collect the LV details
7. mklvcopy loglv01 2 hdiskpower1             - make a LV copy to the new disk
8. mklvcopy data01 2 hdiskpower1             - make a LV copy for all LV's
9. syncvg -v datavg                                     - Synchronize the VG (It will take some time depends on VG size)
10. rmlvcopy loglv01 1 hdiskpower0              - Remove the old LV copy for all LV's


 

Power HA - Quick command List

Command	Description
clstat	show cluster state and substate; needs clinfo.
cldump	SNMP based tool to show cluster state.
cldisp	similar to cldump, perl script to show cluster state.
cltopinfo	list the local view of the cluster topology.
clshowsrv	list the local view of the cluster subsystems.
clfindres	locate the resource groups and display status.
clRGinfo	locate the resource groups and display status.
clcycle	rotate some of the log files.
cl_ping	a cluster ping program with more arguments.
clrsh	cluster rsh program that take cluster node names as argument.
clgetactivenodes	which nodes are active?
get_local_nodename	what is the name of the local node?
clconfig	check the HACMP ODM.
clRGmove	online/offline or move resource groups.
cldare	sync/fix the cluster.
cllsgrp	list the resource groups.
clsnapshotinfo	create a large snapshot of the HACMP configuration.
cllscf	list the network configuration of an HACMP cluster.
clshowres	show the resource group configuration.
cllsif	show network interface information.
cllsres	show short resource group information.
cllsnode	list a node centric overview of the hacmp configuration.

VIO server Virtual Switch Creation

There are two methods to create VIO server Virtual Switch
1. CLI (Command Line Interface)
2. HMC (Hardware Management Console)

CLI



chhwres -r virtualio --rsubtype vswitch -m <manage server name> -o a --vswitch <Vswitch_name>

chhwres -r virtualio --rsubtype vswitch -m Server-9117-MMB-SN123456 -o a --vswitch swbackup1

HMC 


HMC version 7R3.4.0.3


Select the manage server on HMC


Configuration -> Virtual Resources -> Virtual Network Management


Create Vswitch 


select Ethernet and Add Vlan ID's if required 

Change EMC Power Device Name

Changing the EMC power Device  Name on AIX/Unix Systems

emcpadm renamepseudo -s emcpower[a-z] -t emcpower[a-z]"

s- source device name t - target device name

Example:

1. change the device name hdiskpower1 to hdiskpower30

emcpadm renamepseudo -s hdiskpower1 -t hdiskpower30

2. Swap the device name hdiskpower1 and hdiskpower2

emcpadm renamepseudo -s hdiskpower1 -t hdiskpower3
emcpadm renamepseudo -s hdiskpower2 -t hdiskpower1
emcpadm renamepseudo -s hdiskpower3 -t hdiskpower2

hdiskpower3 is dummy device used for swapping

Linux File system creation

Linux File system Creation
~~~~~~~~~~~~~~~~~~~~~~~

check the device name in pvs or powermt display dev=all

1. pvcreate /dev/hdd

1a) vgcreate appvg /dev/emcpowerc

2. vgextend vg0 /dev/hdd

3. lvcreate -L 400M -n lvol1 vg0

4. mkfs -t ext3 -m 1 -v /dev/vg0/lvol1

   tune2fs -l /dev/vg0/lvol1

5. mkdir /mnt/newfs

6. mount -t ext3 /dev/vg0/lvol1 /mnt/newfs

7. lvextend -L40G /dev/rootvg/homelv
   umount /home
   e2fsck -f /dev/rootvg/homelv
   resize2fs /dev/rootvg/homelv
   mount /home