The steps are:
1) Check the cluster state (LLT, GAB)
root@node1 # lltstat -n
LLT node information:
Node State Links
0 node1 OPEN 3
1 node2 OPEN 3
2 node3 OPEN 3
root@node1 # gabconfig -a
GAB Port Memberships
===============================================================
Port a gen f3b50f membership 012
Port b gen f3b51a membership 012
Port h gen f3b51a membership 012 ^
2) Freeze all service groups and systems persistent.
root@node1 # haconf -makerw
root@node1 # hagrp -list |awk '[{print $1}' | sort -u | while read g ; do hagrp -freeze $g -persistent ; done
VCS WARNING V-16-1-50894 Command (hagrp -freeze -persistent ClusterService ) failed. The Group ClusterService cannot be frozen
root@node1 # hasys -list | while read s ; do hasys -freeze -persistent $s ; done
root@node1 # haconf -dump -makero
3) Stop the cluster monitoring
root@node1 # hastop -all -force
4) Stop the Fencing driver on all cluster nodes
root@nodeXXX # /etc/init.d/vxfen stop
Stopping VxFEN:
5) Stop the GAB driver on all cluster nodes
root@nodeXXX # /etc/init.d/gab stop
Stopping GAB:
6) Stop the LLT driver on all cluster nodes
root@nodeXXX # /etc/init.d/llt stop
Stopping LLT:
7) import the coordinator diskgroup on one node
root@node1 # vxdg -ftC import `cat /etc/vxfendg`
8) Set the coordinator flag off
root@node1 # vxdg -g `cat /etc/vxfendg` set coordinator=off
9) Remove unwanted coordinator disks
root@node1 # vxdg -g `cat /etc/vxfendg` rmdisk <unwanteddiskname>
where unwantetdiskname is the diskname out of the output of the command "vxprint -g `cat /etc/vxfendg`"
10) Add new coordinator disks
root@node1 # vxdctl enable
root@node1 # vxdisksetup -i <newdevicename>
root@node1 # vxdg -g `cat /etc/vxfendg` adddisk <newdiskname>=<newdevicename>
where <newdevicename> is to "DEVICE" out of the output of the command "vxdisk list" and <newdiskname> is a name you choose to name the disk in the diskgroup.
11) Rescan the partitions of the new coordinator disk on all systems
As the partition table is changed when a new disk is initialized by Volume Manager and the other nodes do not know about it, we have to Rescan the partition table on the ohter cluster nodes:
First get the diskid for the new coordinator disk on node1:
root@node1 # vxdisk list <newdevicename> |grep '^disk:'
disk: name= id=1327668260.266.node1
Then create the script rescan_partitions.sh on all other nodes with the following content:
#!/bin/bash
vxdctl enable
vxdisk -o alldgs list|grep `cat /etc/vxfendg`|while read disk rest; do
if vxdisk list $disk|grep $1 >/dev/null ; then
if [ "`uname`" = "Linux" ] ; then
vxdisk list $disk | grep state=enabled |while read dev re ; do
grep $dev /proc/partitions
blockdev --rereadpt /dev/$dev
done
fi
vxdisk rm $disk
vxdctl enable
fi
done
And run it with the diskid as paramter on the other nodes
root@nodexxx # ./rescan_partitions.sh 1327668260.266.node1
12) Set the coordinator flag on
root@node1 # vxdg -g `cat /etc/vxfendg` set coordinator=on
13) deport the coordinator diskgroup
root@node1 # vxdg -g `cat /etc/vxfendg` deport
14) Start LLT on all nodes:
root@nodex # /etc/init.d/llt start
Starting LLT:
LLT: loading module...
WARNING: No modules found for 2.6.9-55.ELsmp, using compatible modules for 2.6.9-34.ELsmp.
LLT: configuring module...
15) Start GAB on all nodes:
root@nodex # /etc/init.d/gab start
Starting GAB:
WARNING: No modules found for 2.6.9-55.ELsmp, using compatible modules for 2.6.9-34.ELsmp.
16) Start Fencing Driver on all nodes
root@nodex # /etc/init.d/vxfen start
Starting VxFEN:
WARNING: No modules found for 2.6.9-55.ELsmp, using compatible modules for 2.6.9-34.ELsmp.
Starting vxfen.. Done
17) Start the cluster monitoring on all nodes
root@nodex # hastart
18) Unfreeze all service groups and systems persistent.
Wait for the cluster startup to complete. Check it with the command below. There shoud be no output:
root@node1 # hastatus -summ|grep '^D'
D BWP Proxy LAN-PBWP node1
D MIP Proxy LAN-PMIP node2
Here some resources where still not probed. Just wait another minute and recheck...
As soon as all resources are probed you can safely unfreeze the servicegroups and systems:
root@node1 # haconf -makerw
root@node1 # hagrp -list |awk '[{print $1}' | sort -u | while read g ; do hagrp -unfreeze $g -persistent ; done
VCS WARNING V-16-1-40202 Group is not persistently frozen
root@node1 # hasys -list | while read s ; do hasys -unfreeze -persistent $s ; done
root@node1 # haconf -dump -makero
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