HP-UX vPars and Integrity VM V6.3 Administrator Guide

Offline or Online migration can also be retried by adjusting the following hpvmmigrate timeout
parameters in the /etc/rc.config.d/hpvmconf file.
• HPVMMIGRATE_CONNECT_TIMEOUT—Specifies the timeout value used to check whether
the target host is reachable or not. The default is 1000 milliseconds.
• HPVMMIGRATE_SSHCONNECT_TIMEOUT—Specifies the timeout value used for ssh
connection. The default is 30000 milliseconds.
• HPVMMIGRATE_NETWORK_TIMEOUT—Specifies the network timeout value for the handshake
and initial message exchanges. The default is 15000 milliseconds.
• HPVMMIGRATE_CREATE_TIMEOUT—Specifies the network timeout value for message
exchanges while guest creation at target. The default is 120000 milliseconds.
• HPVMMIGRATE_START_TIMEOUT—Specifies the network timeout value for message exchanges
during guest start. The default is 120000 milliseconds.
When these variables are not defined then the default values are considered. These variables will
be defined in milliseconds in the /etc/rc.config.d/hpvmconf file. For example,
HPVMMIGRATE_SSHCONNECT_TIMEOUT=35000.
12.3.4.3 Sharing guest storage device
The guest storage device shareable attribute is not propagated to the target VSP during an online
migration. After the first guest that is configured to use the shared storage is online migrated to the
target, enable the shared attribute for the device to avoid online migration failures for other guests
that share the device. You can use the hpvmstatus command to determine the device special
filename of the shared device on the target and the hpvmdevmgmt command to mark the device
shareable. For example:
hpvmstatus -P vm_name -d
hpvmdevmgmt -m gdev:/dev/rdisk/disknnn:attr:SHARE=YES
For online and offline migration, device special files (DSFs) assigned to VMs do not need to match
on source and target VSPs. The hpvmmigrate command converts from DSF on the source VSP to
WWID and then DSF on the target VSP. You can use the ioscan -C disk -P wwid command
to find out whether the disks of the VM are presented to both VSPs. If you find stale DSFs and stale
entries in your Integrity VM device management database, use the insf -e command and the
hpvmdevmgmt command to repair the HP-UX VSP system.
WARNING! Do not physically rearrange controllers on the host systems to make the paths the
same. This can lead to stale DSFs and stale entries in the Integrity VM device management database.
Do not mark disks SHARE=YES for devices assigned to VMs that migrate (unless more than one
VM shares the storage on the same VSP). Marking a device SHARE=YES can lead to more than
one VM using the device at the same time and can lead to disk corruption.
12.3.4.4 Selecting physical HBA ports during migration with NPIV HBAs
Starting vPars and Integrity VM V6.2, the hpvmmigrate command attempts to take into account
redundancy and multi-pathing aspects in addition to balancing the count of NPIV HBA across
available HBA ports while selecting the HBA ports on which a guest NPIV HBAs will be placed.
The following rules apply:
• The pFCs chosen on the target host depends on the following:
12.3 VSP and VM configuration considerations 213