PowerVM Sample Setup

VIO Server Commands:


lsdev –virtual (list all virtual devices on VIO server partitions)
lsmap –all (lists mapping between physical and logical devices)
oem_setup_env (change to OEM [AIX] environment on VIO server)

Create Shared Ethernet Adapter (SEA) on VIO Server:

mkvdev –sea{physical adapt} –vadapter {virtual eth adapt} –default {dflt virtual adapt} –defaultid {dflt vlan ID}

SEA Failover:

ent0 – GigE adapter (Physical Adapter on the VIO Server)
ent1 – Virt Eth VLAN1 (Defined with a priority in the partition profile)
ent2 – Virt Eth VLAN 99 (Control channel interface for redundancy between VIO servers)
mkvdev –sea ent0 –vadapter ent1 –default ent1 –defaultid 1 –attr ha_mode=auto ctl_chan=ent2
(Creates ent3 as the Shared Ethernet Adapter)

Create Virtual Storage Device Mapping:

mkvdev –vdev {LV or hdisk} –vadapter {vhost adapt} –dev {virt dev name}

Sharing a Single SAN LUN from Two VIO Servers to a Single VIO Client LPAR:

Through oem_setup_env mode
hdisk3 = SAN LUN (on vioa server)
hdisk4 = SAN LUN (on viob, same LUN as vioa)
chdev –dev hdisk3 –attr reserve_policy=no_reserve (from vioa to prevent a reserve on the disk)
chdev –dev hdisk4 –attr reserve_policy=no_reserve (from viob to prevent a reserve on the disk)

Through IOS mode
mkvdev –vdev hdisk3 –vadapter vhost0 –dev hdisk3_v (from vioa)
mkvdev –vdev hdisk4 –vadapter vhost0 –dev hdisk4_v (from viob)

VIO Client would see a single LUN with two paths:

lspath –l hdiskx (where hdiskx is the newly discovered disk)
This will show two paths on the vio client, one down from vscsi0 and the other down from vscsi1.

Sample VIO Setup Diagrams: