Configuring Solaris Zones in VCS Clusters

I have been thinking from quite a while for providing the High Availability to Non-Global zones Vertias Clusters.

Lets see , how we can configure the same.

In Vertias Cluster, Assuming that the non global zone will be on a shared storage and we are configuring a failover or a parallel Service Group.

Configure a parallel service group with required storage resources (DiskGroup,Volume, Mount, etc.) to mount the zone root on the nodes. Set the required dependency between storage resources (DiskGroup->Volume->Mount).
sysA# hagrp -add zone_grp
sysA# hagrp -modify zone_grp Parallel 1 (This step is not included while configuring failover)
sysA# hagrp -modify zone_grp SystemList sysA 0 sysB 1
sysA# hares -add zone_dg DiskGroup zone_grp
sysA# hares -add zone_vol Volume zone_grp
sysA# hares -add zone_mnt Mount zone_grp
sysA# hares -link zone_mnt zone_vol
sysA# hares -link zone_vol zone_dg

Bring the service group online on all the nodes. This command mounts the zone root on all the nodes.
sysA# hagrp -online zone_grp -any  (Parallel)
sysA# hagrp -online zone_grp -sysA  (Failover)

Boot the local zone on all the nodes outside VCS.
sysA# zoneadm -z local-zone1 boot
sysB# zoneadm -z local-zone2 boot

Run the hazonesetup utility with correct arguments on all the nodes successively.(Parallel)
sysA# hazonesetup -g zone_grp -r zone_res -z local-zone1 -p password -a -l -s sysA,sysB
sysB# hazonesetup -g zone_grp -r zone_res -z local-zone2 -p password -a -l -s sysA,sysB

Run the hazonesetup utility with correct arguments on all the nodes successively.(Failover)
sysA# hazonesetup -g zone_grp -r zone_res -z local-zone1 -p password -a  -s sysA,sysB
sysB# hazonesetup -g zone_grp -r zone_res -z local-zone2 -p password -a  -s sysA,sysB

Set the proper dependency between the Zone resource and other storage
resources. The Zone resource should depend on storage resource
(Mount->Zone).
sysA# hares -link zone_res zone_mnt

Redhat Linux 5,6 - How to Scan and configure new Luns from Storage?

SCAN AND CONFIGURE NEW LUNS on RHEL 5 and RHEL 6

If you have 4 fc ports on which you have assigned the storage luns.
Then you need to run the below for loop to scan the LUNS on all the 4 ports.

for i in host1 host2 host3 host0
> do
> echo "1" > /sys/class/fc_host/$i/issue_lip
> echo "- - -" > /sys/class/scsi_host/$i/scan
> done

After this you can run fdisk -l or multipath -ll to see the new luns. Once the new luns are visible , you can use the luns using LVM or raw paritioning.

IF you want to rescan the disk lun then you can run the below command.


echo 1 > /sys/block/sda/device/rescan
echo 1 > /sys/block/sdb/device/rescan
echo 1 > /sys/block/sdc/device/rescan
echo 1 > /sys/block/sdd/device/rescan

RHEL -How to check the WWN and WWPN Numbers on Linux

#systool -c fc_host -v -----> Give Server FC WWN & WWPN numbers
#systool -c fc_transport -v --------> Give Server & Storage FC WWN & WWPN numbers