HP-UX HB v13.00 Ch-18 - HPVM

HP-UX Handbook – Rev 13.00 Page 42 (of 49)
Chapter 18 Integrity Virtual Machines (HPVM)
October 29, 2013
 Start the guest on the destination host using the hpvmstart or hpvmconsole command.
Networking Configuration Considerations
The source and destination hosts should be on the same subnet. The hpvmmigrate command
preserves the MAC address of the guest being migrated, so having the hosts on the same subnet
prevents problems where it would be necessary to change to the guest´s host name or IP address
In addition, ensure that all network interface cards(NICs) are symmetrically configured on both
the source and destination hosts. For example, if lan0 on HostA is connected to subnet A, and
lan1 is connected to subnet B, make sure that, on HostB, lan0 is connected to subnet A and lan1
is connected to subnet B.
Storage Configuration Considerations
Both the source and destination hosts must share access to symmetrically configured storage
devices. Specially, both hosts must use the same character disk device file name for each disk
device (see ioinit(1M) for information about how to reassign instance numbers to the ext_bus
class.)
Also, the same storage devices must be visible to both hosts. The hpvmmigrate command uses
the Fibre Channel WWN (WWID) to determine whether the storage allocated to a guest on the
source host is also reachable on the destination host.
To avoid inadvertently using the disk devices associated with a guest on more than one host,
make it a practice to mark as restricted all the disk devices used for guest storage on all hosts,
except the disk that contains the guest. To mark a disk as restricted, use the hpvmdevmgmt
command as follows:
# hpvmdevmgmt –a rdev:entry_name
After the guest has been successfully migrated, the hpvmmigrate command marks as restricted
all the disk devices allocated to the guest on the source system, to prevent any other guests from
using them. On the destination host, the disk devices allocated to the migrated guest are marked
as unrestricted.
Security Considerations
The hpvmmigrate command requires HP-UX Secure Shell (SSH) to be set up on both the source
and destination host systems. SSH provides a secure communication path between hosts and is
installed on HP-UX 11.31 systems by default. To enable secure communication between the
source and the destination hosts, you must generate SSH keys on both systems.
The hpvmmigrate command uses SSH public-key based authentication between the source and
destination hosts. Password and host based authentication are not supported.
SSH Key Setup: