Configuring the Guest Domain to Be Migrated

In addition to configuring the target system to accept migrations, you must also configure the domain that will be migrated so that the domain's storage is accessible from both the source and the target systems. The domain's accessible disks must reside on some form of shared storage, such as NFS files or iSCSI volumes. This document uses the NFS method available in the OpenSolaris 2009.06 release.

Prepare the NFS Storage on the NFS Server

On the NFS server, share the directory:

# sharectl set -p nfsmapid_domain=sun.com nfs
# svcadm restart svc:/network/nfs/mapid:default
# share -F nfs -o "sec=sys,root=host1:host2,rw" /vdisks

On both the host1 source system and the host2target system, also execute the sharectl to set the NFS mapid name to sun.com, and the svcadm command restart the xend service.

Create a PV Guest on the Source Machine (host1)

# virt-install -p --nographics -n domain -r 1024 -l /isos/os0906/os0906.iso -f /net/hostname_of_nfs_server/vdisks/testpv

The virt-install command then creates the virtual disk on the NFS server and starts the guest installation process.

iscsi Volume Method, Available in a Later Build

This method should be available in a build after the OpenSolaris 2009.06 release.

An iscsi-backed guest would be created with this base command:

# virt-install -n <name> -r <ram> -p --nographics -l /path/to/iso \
-m <mac address> \
--disk path=/static/<iscsi target ip address>/<lun>/<iqnnumber>,driver=phy,subdriver=iscsi 

An example would be:

# virt-install -n ubuntu -r 1024 -p --nographics -l /net/xvm-4200m2-03/isos/ubuntu-7.04-32.iso \ 
--disk path=/static/172.20.26.10/0/iqn.1986-03.com.sun:02:52ac879e-788e-e0ea-bf5c-f86b2b63258a,driver=phy,subdriver=iscsi

In addition to setting up the xend relocation host allow field as described above in the section "Enabling Live Migration on a Target Host,” also issue the following command to enable static discovery on both dom0s:

# iscsiadm modify discovery -s enable