HYPER-V(4) FreeBSD Kernel Interfaces Manual HYPER-V(4)
NAME
hv_utils - Hyper-V Utilities Driver
SYNOPSIS
To compile this driver into the kernel, place the following lines in the
system kernel configuration file:
device hyperv
DESCRIPTION
The hv_utils driver provides time keeping, shutdown and heartbeat
functionality for FreeBSD guest partitions running on Hyper-V. Hyper-V
is a hypervisor-based virtualization technology from Microsoft. The
hv_utils driver is one of the core drivers required to be present in
guest partitions running on Hyper-V. This driver provides the following
functionalities to guest partitions:
(a) Time Keeping: The clock inside the guest partition will remain
accurate by synchronizing to the clock on the virtualization server via
Timesync service, and with the help of the pluggable time source device.
(b) Integrated shutdown: Guest partitions running FreeBSD can be shut
down from Hyper-V Manager console by using the "Shut down" command.
(c) Heartbeat: This feature allows the virtualization server to detect
whether the guest partition is running and responsive.
SEE ALSO
hv_ata_pci_disengage(4), hv_netvsc(4), hv_storvsc(4), hv_vmbus(4)
HISTORY
Support for hv_utils first appeared in FreeBSD 10.0. The driver was
developed through a joint effort between Citrix Incorporated, Microsoft
Corporation, and Network Appliance Incorporated.
AUTHORS
FreeBSD support for hv_utils was first added by Microsoft BSD Integration
Services Team <
[email protected]>.
FreeBSD 14.1-RELEASE-p8 September 10, 2013 FreeBSD 14.1-RELEASE-p8